Re: Problems with IET trains from April 2021 Posted by Wizard at 09:14, 7th September 2025 | ![]() ![]() ![]() ![]() |
And how many years is it since my now famous crystal ball predicted that the new trains "would in practice be mainly 5 car units"
Such views were widely criticised as being unduly negative.
Such views were widely criticised as being unduly negative.
To say they are ‘mainly five car units’ isn’t really correct. The odd service runs with five when it should be more but the majority of trains leaving London have nine or ten coaches, as planned.
Re: Problems with IET trains from April 2021 Posted by grahame at 21:55, 6th September 2025 | ![]() ![]() ![]() ![]() |
And how many years is it since my now famous crystal ball predicted that the new trains "would in practice be mainly 5 car units"
Such views were widely criticised as being unduly negative.
Such views were widely criticised as being unduly negative.
Things may be getting better though.
The 18:00 Temple Meads to Paddington was just a five car, but by 19:00 the Temple Meads to Paddington was up to 9 cars, and the train arriving into Temple Meads fromn London was ten.
Re: Problems with IET trains from April 2021 Posted by broadgage at 16:56, 6th September 2025 | ![]() ![]() ![]() ![]() |
And how many years is it since my now famous crystal ball predicted that the new trains "would in practice be mainly 5 car units"
Such views were widely criticised as being unduly negative.
Re: Another IET fault under investigation Posted by Clan Line at 13:47, 6th September 2025 | ![]() ![]() ![]() ![]() |
They should have kept the HSTs ! not forever of course, but until the wretched IETs could work reliably enough to provide a full service.
Not sure if your statement could grammatically be classified as an oxymoron...............but it certainly seems to contradict itself. Will the IETs EVER provide a full, reliable service ?

I recently spent several hours between Bath and Maindee Jct (mostly at BRI) and did notice, at the time, that the vast majority of IETs we saw/passed were only 5 car units. The only 9 car I can definitely remember seeing was outside WSB, heading towards BRI............as ECS !
Re: Another IET fault under investigation Posted by broadgage at 05:00, 6th September 2025 | ![]() ![]() ![]() ![]() |
They should have kept the HSTs ! not forever of course, but until the wretched IETs could work reliably enough to provide a full service.
Re: Another IET fault under investigation Posted by eightonedee at 22:28, 5th September 2025 | ![]() ![]() ![]() ![]() |
Have the Tanat Valley still got those Pacers to sell

Re: Another IET fault under investigation Posted by didcotdean at 20:59, 5th September 2025 | ![]() ![]() ![]() ![]() |
There has been a varying dog's dinner from day to day of allocations on diagrams this week, no doubt to utilise what is available.. As well as short-forming and cancellations there has also been long-forming of 10 vice 9 and 9 vice 5. Only the last is a real pleasant surprise.
Re: Another IET fault under investigation Posted by broadgage at 20:02, 5th September 2025 | ![]() ![]() ![]() ![]() |
Has there EVER been a week when IETs have not been short formed due to faults ?
Re: Another IET fault under investigation Posted by grahame at 10:06, 5th September 2025 | ![]() ![]() ![]() ![]() |
The Intercity Express Train (IET) fleet is currently experiencing a reduction in available units due to an increase in GU (Generator Unit) faults, which are under investigation by Hitachi. As a result, there will be a rise in short-formed and cancelled services while Hitachi develops an engineering solution. In the event of an incident this will impact service recovery due to the need to keep traction on certain diagrams.
Could this explain 3 x 165 on a Bristol (Temple Meads) to Reading train recently?
Another IET fault under investigation Posted by PhilWakely at 10:00, 5th September 2025 | ![]() ![]() ![]() ![]() |
The Intercity Express Train (IET) fleet is currently experiencing a reduction in available units due to an increase in GU (Generator Unit) faults, which are under investigation by Hitachi. As a result, there will be a rise in short-formed and cancelled services while Hitachi develops an engineering solution. In the event of an incident this will impact service recovery due to the need to keep traction on certain diagrams.
Re: Problems with IET trains from April 2021 Posted by ChrisB at 16:13, 24th August 2025 | ![]() ![]() ![]() ![]() |
Wonder how long it'll be before this 'problem' in RTT is raised again?
Re: Problems with IET trains from April 2021 Posted by BBM at 10:02, 24th August 2025 | ![]() ![]() ![]() ![]() |
A nice problem to have -
1A84 1020 Penzance to London Paddington
Left Penzance as 5 cars.
9 added at Plymouth!
Showing 14 cars to London!
1A84 1020 Penzance to London Paddington
Left Penzance as 5 cars.
9 added at Plymouth!
Showing 14 cars to London!
This is a well-known issue on RTT, there's a recent thread on Rail UK Forums which explains how it happens:
https://www.railforums.co.uk/threads/22-coach-pendolino.290852/
Re: Problems with IET trains from April 2021 Posted by GBM at 08:59, 24th August 2025 | ![]() ![]() ![]() ![]() |
08:27 Plymouth to London Paddington due 11:59
Facilities on the 08:27 Plymouth to London Paddington due 11:59.
Will be formed of 8 coaches instead of 10.
One carriage locked out of use I wonder?
It then forms the 12:30 London Paddington to Bristol Temple Meads due 14:05
Will be formed of 8 coaches instead of 10.
16:00 Bristol Temple Meads to London Paddington due 17:37
Will be formed of 8 coaches instead of 10.
18:00 London Paddington to Plymouth due 21:31
Will be formed of 8 coaches instead of 10.
Finally 5C25 2202 Plymouth to Laira T.& R.S.M.D.
Re: Problems with IET trains from April 2021 Posted by grahame at 07:25, 24th August 2025 | ![]() ![]() ![]() ![]() |
Totally confused on this one,did 14 coaches actually make the journey from the west of England to Paddington?
If it did how was the train accommodated at Paddington?
If it did how was the train accommodated at Paddington?
I would be surprised if 14 carriages made Paddington. Maximum platformed is 12 IET carriages (but how would you do that?) in Platform 1, but a long lead out past the old parcels / mail platform without points might provide an exceptional ability to handle more?
From the sectional appendix PDF - here:

If that "26 chains" on the left is the distance to the first point, then physically 20 carriages of 26 metres could just fit in there.
Re: Problems with IET trains from April 2021 Posted by infoman at 03:35, 24th August 2025 | ![]() ![]() ![]() ![]() |
Totally confused on this one,did 14 coaches actually make the journey from the west of England to Paddington?
If it did how was the train accommodated at Paddington?
Re: Problems with IET trains from April 2021 Posted by stuving at 23:37, 22nd August 2025 | ![]() ![]() ![]() ![]() |
Reminded me of the 23-car lash up through Tonbridge
:
https://www.youtube.com/watch?v=jta4c9FMmCA
Is there a theoretical maximum of IETs that can be coupled together?

https://www.youtube.com/watch?v=jta4c9FMmCA
Is there a theoretical maximum of IETs that can be coupled together?
Yes, as specified for passenger operation it's two units and 312 m - twelve vehicles. Given the unit lengths in existence that means only trains that actually operate now.
For ECS and rescue modes, twice that is allowed. That means any train operating now can rescue any other, but it does not have to haul anything longer than it is. Thus some theoretical possibilities such as 5+5+5+9 might be allowed as ECS, but not for rescue (i.e. with passengers on board the rescued train).
Re: Problems with IET trains from April 2021 Posted by Fourbee at 20:21, 22nd August 2025 | ![]() ![]() ![]() ![]() |
Reminded me of the 23-car lash up through Tonbridge

https://www.youtube.com/watch?v=jta4c9FMmCA
Is there a theoretical maximum of IETs that can be coupled together?
Re: Problems with IET trains from April 2021 Posted by ChrisB at 12:30, 22nd August 2025 | ![]() ![]() ![]() ![]() |
Carting those 9 out of use I think
Re: Problems with IET trains from April 2021 Posted by GBM at 12:27, 22nd August 2025 | ![]() ![]() ![]() ![]() |
A nice problem to have -
1A84 1020 Penzance to London Paddington
Left Penzance as 5 cars.
9 added at Plymouth!
Showing 14 cars to London!
Re: Problems with IET trains from April 2021 Posted by Witham Bobby at 12:25, 22nd August 2025 | ![]() ![]() ![]() ![]() |
Sooo, first gen DMU heating... how'd it work?
Mark
Mark
If you want to know more, the Railcar Society website has a useful WR guide to DMU heaters:
https://www.railcar.co.uk/documentation/
Scroll down the page a little to find it
A manual for the Smiths heaters can be found by scrolling a little further
Now I'm down a rabbit hole:
https://preserved.railcar.co.uk/documentation/tsu-89-99-heaters.pdf
[Edit: to add information]
Re: Problems with IET trains from April 2021 Posted by Witham Bobby at 12:16, 22nd August 2025 | ![]() ![]() ![]() ![]() |
AI generated answer:
First generation diesel multiple units (DMUs) on British Railways were primarily fitted from new with Smiths combustion heaters, although a few were initially equipped with a similar type manufactured by Dragonair, which were later replaced by the Smiths version due to recurring problems.
These heaters operated by burning fuel to generate heat, with the fan end of the heater being colour coded to indicate the unit's heat output; the warmer 50,000 BTU units, differing only in their fuel pumps, were typically fitted to vehicles carrying a single heater, such as Class 108s.
Vehicles with two heaters generally required one of each hand, as the glow plug needed to be positioned on the side facing outwards for ease of access.
The heaters were controlled through a system that included a flame detection thermostat and were integrated into the vehicle's control system.
In 1977, British Rail determined that electrical faults and heater reliability could be improved by electrically insulating the heaters from the vehicle body, achieved by using rubber pads on mounting straps, rubber tubing in the fuel pipe, and insulating bushes made of GRP at both ends of the heater to prevent metal-to-metal contact.
AI-generated answer. Please verify critical facts.
These heaters operated by burning fuel to generate heat, with the fan end of the heater being colour coded to indicate the unit's heat output; the warmer 50,000 BTU units, differing only in their fuel pumps, were typically fitted to vehicles carrying a single heater, such as Class 108s.
Vehicles with two heaters generally required one of each hand, as the glow plug needed to be positioned on the side facing outwards for ease of access.
The heaters were controlled through a system that included a flame detection thermostat and were integrated into the vehicle's control system.
In 1977, British Rail determined that electrical faults and heater reliability could be improved by electrically insulating the heaters from the vehicle body, achieved by using rubber pads on mounting straps, rubber tubing in the fuel pipe, and insulating bushes made of GRP at both ends of the heater to prevent metal-to-metal contact.
AI-generated answer. Please verify critical facts.
It's AI generated, but corresponds well with my recollection of the heaters on the Park Royal sets we had on the WSR in the mid/late 1970s
Re: Problems with IET trains from April 2021 Posted by Mark A at 12:08, 22nd August 2025 | ![]() ![]() ![]() ![]() |
Sooo, first gen DMU heating... how'd it work?
Mark
Re: Problems with IET trains from April 2021 Posted by Witham Bobby at 09:36, 22nd August 2025 | ![]() ![]() ![]() ![]() |
A fault on the train, but it can run through to Paddington empty?
Door fault? Aircon intake fault - filling passenger cabin with diesel exhaust?
Oh, happy memories of first generation DMU heating!
That kerosene and sulphur smell that took your breath away!
Re: Problems with IET trains from April 2021 Posted by Ralph Ayres at 09:20, 22nd August 2025 | ![]() ![]() ![]() ![]() |
A fault on the train, but it can run through to Paddington empty?
Door fault? Aircon intake fault - filling passenger cabin with diesel exhaust?
Oh, happy memories of first generation DMU heating!
Re: Problems with IET trains from April 2021 Posted by grahame at 13:45, 21st August 2025 | ![]() ![]() ![]() ![]() |
A fault on the train, but it can run through to Paddington empty?
Door fault? Aircon intake fault - filling passenger cabin with diesel exhaust?
Re: Problems with IET trains from April 2021 Posted by GBM at 13:41, 21st August 2025 | ![]() ![]() ![]() ![]() |
Eh?
12:15 Penzance to London Paddington due 17:31
12:15 Penzance to London Paddington due 17:31 has been cancelled.
This is due to a fault on this train.
Additional Information
Customers making journeys within Devon and Somerset can travel with Cross Country's Edinburgh service as far as Taunton, which departs Plymouth at 14:27.
RTT at Penzance shows -
1A88 1215 Penzance to London Paddington This service is cancelled.
This service was cancelled due to a problem with the traction equipment (MD).
AND
5A88 1215 Penzance to London Paddington
Empty Coaching Stock
A fault on the train, but it can run through to Paddington empty?
Re: Problems with IET trains from April 2021 Posted by ChrisB at 19:52, 23rd April 2025 | ![]() ![]() ![]() ![]() |
Another update from Richard Clinnick. This has been going on so long that he's now on his 3rd job since the start, and is now editor, Modern Railways...

So far treated - 7 5car 800/0s, 3 9car 800/3s, 12 5car 802/0s and 6 802/1s
800013 & 802017 currently at Eastleigh
In total, there are 93 IETs, 57 owned by Agility. Of those, 28 5car 800/0s and 18 9car 800/3s still need to be treated That leaves 36 IETs owned by Eversholt of which 9 5car 802/0s and 7 9car 802/1s have yet to be treated
[if these figures don't add up, they're Richard's not mine!]
Re: Problems with IET trains from April 2021 Posted by ChrisB at 20:34, 6th March 2025 | ![]() ![]() ![]() ![]() |
Richard Clinnick (editor, Modern Railways) tweeted a fleet update on GWRs IETs with the cracking problem still ongoing....
Just 38 IETs from the fleets of GWR and LNER have been through Eastleigh works for repairs so far. 800110 has been through twice! Currently there are 800013, 800110 & 802102.
Still to go from GWR -
800002-012/014-016/019-021/023/025/027/029-036/301-302/304-308/311-321
802004-006/009/013/014/017/018/020/022/101/103-106/109/110/112/113
plus another 33 sets from LNER.
Still to go from GWR -
800002-012/014-016/019-021/023/025/027/029-036/301-302/304-308/311-321
802004-006/009/013/014/017/018/020/022/101/103-106/109/110/112/113
plus another 33 sets from LNER.
So many years yet.....
Re: Problems with IET trains from April 2021 Posted by grahame at 14:14, 6th March 2025 | ![]() ![]() ![]() ![]() |
Debate cars vs coaches! (I seem to remember we did have that debate a while ago).
https://www.firstgreatwestern.info/coffeeshop/index.php?topic=27903 - and we included "carriages" but not "vehicles".
Re: Problems with IET trains from April 2021 Posted by GBM at 13:17, 6th March 2025 | ![]() ![]() ![]() ![]() |
I've noticed 'recently/a while ago' that there were a few 5 car units doing the rounds(more trains than usual, etc).
However, it is now more common to see 5 cars from Penzance to Paddington with no additional cars at Plymouth.
It is easy to say West Country services must be 9 or 10 cars at all times, but that means perhaps Bristol/Wales/Hereford lose out.
Whilst Hitachi might well be working quietly behind the scenes, I'm surprised that the 5 car issues have not been sorted at all.
Debate cars vs coaches! (I seem to remember we did have that debate a while ago).
The IET's are 5 car/coaches units, or a 9 car/coach formation anyway.
Re: Problems with IET trains from April 2021 Posted by bradshaw at 08:09, 6th June 2024 | ![]() ![]() ![]() ![]() |
The Paignton service has been reinstated starting from Taunton, using a 3 car unit, according to Journey Check.
Running as 3C70 ecs from Bristol according to Traksy
Re: Problems with IET trains from April 2021 Posted by Timmer at 07:11, 6th June 2024 | ![]() ![]() ![]() ![]() |
08:03 London Paddington to Penzance due 13:07
08:03 London Paddington to Penzance due 13:07 will call additionally at Castle Cary.
This is due to a fault on this train.
Just wondering why a problem will give an additional station stop?
I've seen it on other trips since IET's started.
I would say likely to do with the 07:03 being cancelled:08:03 London Paddington to Penzance due 13:07 will call additionally at Castle Cary.
This is due to a fault on this train.
Just wondering why a problem will give an additional station stop?
I've seen it on other trips since IET's started.
07:03 London Paddington to Paignton due 10:16 will be cancelled.
This is due to a fault on this train.
This is due to a fault on this train.
Re: Problems with IET trains from April 2021 Posted by GBM at 07:06, 6th June 2024 | ![]() ![]() ![]() ![]() |
08:03 London Paddington to Penzance due 13:07
08:03 London Paddington to Penzance due 13:07 will call additionally at Castle Cary.
This is due to a fault on this train.
Just wondering why a problem will give an additional station stop?
I've seen it on other trips since IET's started.
Re: GWR IETs Issue Posted by IndustryInsider at 19:42, 26th February 2024 | ![]() ![]() ![]() ![]() |
At least you refrained from suggesting steam engine haulage on this particular occasion I suppose.
Re: GWR IETs Issue Posted by broadgage at 16:05, 26th February 2024 | ![]() ![]() ![]() ![]() |
Thank you for the explanation
Yes I agree with you on Broadgauge's piece of false propaganda.

I simply suggested possible sources of alternative rolling stock IF significant numbers of IETs are withdrawn. I see no propaganda in such a post.
Re: GWR IETs Issue Posted by GWR 158 at 15:38, 26th February 2024 | ![]() ![]() ![]() ![]() |
Thanks for the information, it will be interesting to hear of any plans

Re: GWR IETs Issue Posted by grahame at 15:18, 26th February 2024 | ![]() ![]() ![]() ![]() |
Oh now, now folks

I do know of some rolling stock plans - but in them the IETs are very much here to stay. And there's an update briefing later this week that I'll be attending and I will report back if there's different news.
Re: GWR IETs Issue Posted by GWR 158 at 14:54, 26th February 2024 | ![]() ![]() ![]() ![]() |
Thank you for the explanation

Re: GWR IETs Issue Posted by IndustryInsider at 14:52, 26th February 2024 | ![]() ![]() ![]() ![]() |
All i wanted was further information, there is no need to be rude.
I was replying to Broadgage who had made the previous post, and, unfortunately, had rather hijacked your original question with his own unique brand of propaganda.

Re: GWR IETs Issue Posted by GWR 158 at 14:45, 26th February 2024 | ![]() ![]() ![]() ![]() |
Sounds like a great idea to me. Perhaps it will allow GWR to operate that service to Fantasy Island at long last so we can come visit you.
All i wanted was further information, there is no need to be rude.
Re: GWR IETs Issue Posted by GWR 158 at 14:43, 26th February 2024 | ![]() ![]() ![]() ![]() |
Then again this is just a rumour isn’t it.
Indeed. Perhaps GWR 158 can tell us from where he heard the rumour?
I certainly can, I heard it from a friend. I highly doubted this would be true anyway, I just wanted further information to see whether anyone has heard anything similar.
Re: GWR IETs Issue Posted by TonyK at 13:13, 26th February 2024 | ![]() ![]() ![]() ![]() |
Hi all,
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
I've had a look at RTT for my local station (Tiverton Parkway) and only four of the GWR trains stopping or passing through today are not 80x types. 3 are 158s doing positional stuff I suppose. The other outlier is the only loco hauled service of the day, the sleeper, which was part-cancelled and began at Reading instead of Paddington. That would be a lot to replace. Given that they are largely running to time, I very much doubt that will happen.
Re: GWR IETs Issue Posted by IndustryInsider at 12:41, 26th February 2024 | ![]() ![]() ![]() ![]() |
Then again this is just a rumour isn’t it.
Indeed. Perhaps GWR 158 can tell us from where he heard the rumour?
Re: GWR IETs Issue Posted by REVUpminster at 12:09, 26th February 2024 | ![]() ![]() ![]() ![]() |
They are never going to get rid of the 800s. With all the variants there are 262 sets from the 395 Javelin to Aurora 810s
Re: GWR IETs Issue Posted by 1st fan at 11:40, 26th February 2024 | ![]() ![]() ![]() ![]() |
Surely Hitachi are on the hook for these trains and a failure to provide sufficient sets a day costs them a few quid. I know they’re not responsible for the ‘lovely’ carriage interiors but you would think they’d make sure the exteriors were fine and mechanically sound.
Then again this is just a rumour isn’t it.
Re: GWR IETs Issue Posted by nickswift99 at 09:24, 26th February 2024 | ![]() ![]() ![]() ![]() |
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
Where are the replacement 93 trainsets coming from?
(other than the Strategic Reserve in Box Tunnel, obviously)
I think I have now realised why Network Rail have not remedied the persistent issues with flooding in various parts of the network. I contend that they are covert water troughs designed to support the Strategic Reserve.
Re: GWR IETs Issue Posted by IndustryInsider at 09:11, 26th February 2024 | ![]() ![]() ![]() ![]() |
Sounds like a great idea to me. Perhaps it will allow GWR to operate that service to Fantasy Island at long last so we can come visit you.
Re: GWR IETs Issue Posted by broadgage at 23:26, 25th February 2024 | ![]() ![]() ![]() ![]() |
Hopefully not every unit will need immediate withdrawal, some might be be allowed to run for months yet.
Some spare stock s available, the ex-TPE stock has already been suggested, and there are still some surviving HSTs stored. mainline passed stock from heritage lines is another possibility. Not adequate but a lot better than nothing.
Building loco hauled coaches is well understood and relatively quick.
The special bi-mode locomotives/power cars would take longer, but in the short term existing diesel locos would be better than nothing.
Re: GWR IETs Issue Posted by Richard Fairhurst at 21:04, 25th February 2024 | ![]() ![]() ![]() ![]() |
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
Where are the replacement 93 trainsets coming from?
(other than the Strategic Reserve in Box Tunnel, obviously)
Re: GWR IETs Issue Posted by broadgage at 13:36, 25th February 2024 | ![]() ![]() ![]() ![]() |
Build some more HSTs !
Not of course an exact copy of a near 50 year old design, but something similar in design.
A BIMODE power car or locomotive at each end, no more underfloorbus gin palace engines.
Total train length similar to a 5+5 car IET.
Buffet car, padded seats, tables, luggage space etc.
Not of course an exact copy of a near 50 year old design, but something similar in design.
A BIMODE power car or locomotive at each end, no more underfloor
Total train length similar to a 5+5 car IET.
Buffet car, padded seats, tables, luggage space etc.
I had a vague, yet somehow certain feeling that one would come along!

And what exactly is wrong with calling for proper trains to replace IETs ? With the features listed above, and also fixed formation. No flexible train length as flexible means shorter.
Before the wretched things were even introduced it was clear that they represented a backward step in comfort and facilities They have now been in service for some years and poor build quality and unreliability are major problems.
Re: GWR IETs Issue Posted by TaplowGreen at 20:36, 24th February 2024 | ![]() ![]() ![]() ![]() |
Build some more HSTs !
Not of course an exact copy of a near 50 year od design, but something simiar in design.
A BIMODE power car or locomotive at each end, no more underfloorbus gin palace engines.
Total train length similar to a 5+5 car IET.
Buffet car, padded seats, tables, luggage space etc.
Not of course an exact copy of a near 50 year od design, but something simiar in design.
A BIMODE power car or locomotive at each end, no more underfloor
Total train length similar to a 5+5 car IET.
Buffet car, padded seats, tables, luggage space etc.
I had a vague, yet somehow certain feeling that one would come along!

Re: GWR IETs Issue Posted by broadgage at 19:24, 24th February 2024 | ![]() ![]() ![]() ![]() |
Build some more HSTs !
Not of course an exact copy of a near 50 year old design, but something similar in design.
A BIMODE power car or locomotive at each end, no more underfloor
Total train length similar to a 5+5 car IET.
Buffet car, padded seats, tables, luggage space etc.
Re: GWR IETs Issue Posted by a-driver at 19:01, 24th February 2024 | ![]() ![]() ![]() ![]() |
There’s loads of rumours surrounding IETs!
Most, if not all, concern their withdrawal. We can only hope one, just one, turns out to be true.

Re: GWR IETs Issue Posted by GWR 158 at 17:45, 24th February 2024 | ![]() ![]() ![]() ![]() |
No it didn't thankfully
Re: GWR IETs Issue Posted by TaplowGreen at 17:10, 24th February 2024 | ![]() ![]() ![]() ![]() |
Hi all,
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
.............rumour didn't come from a certain Port quaffing member of this esteemed forum by any chance?

GWR IETs Issue Posted by GWR 158 at 15:10, 24th February 2024 | ![]() ![]() ![]() ![]() |
Hi all,
I heard a rumour recently that suggested GWR are planning to withdraw IET sets permanently due to rusting/corroding bolts. Does anybody have more information on this? Or is it untrue
Re: Problems with IET trains from April 2021 Posted by chuffed at 09:57, 5th February 2024 | ![]() ![]() ![]() ![]() |
In the early days of the project, many promises were made about the quality and reliability of these new trains.
In the early days of the project, many promises were made about the quality and reliability of these new ..............roads/hospitals/libraries/sports centres/airports/aircraft carriers/armoured cars/mail deliveries/bank availabilities/flood prevention schemes/electric cars/supermarket cashiers/Boeing 737s/etc/etc................this could be a whole new thread in itself for an election year
Re: IET bodyshells: surface coating failures, or corrosion? Posted by broadgage at 06:05, 4th February 2024 | ![]() ![]() ![]() ![]() |
Suggest merging this thread with the main "problems with IETs" thread.
Re: Problems with IET trains from April 2021 Posted by Clan Line at 13:09, 3rd February 2024 | ![]() ![]() ![]() ![]() |
In the early days of the project, many promises were made about the quality and reliability of these new trains.
In the early days of the project, many promises were made about the quality and reliability of these new ..............roads/hospitals/libraries/sports centres/airports/aircraft carriers/armoured cars/mail deliveries/bank availabilities/flood prevention schemes/electric cars/supermarket cashiers/Boeing 737s/etc/etc................
Re: Problems with IET trains from April 2021 Posted by broadgage at 12:25, 3rd February 2024 | ![]() ![]() ![]() ![]() |
Sadly as with so many things these day, IET built to a price ,not to a standard.
I thought that the price was relatively high, one criticism of the project was the substantial cost of the trains. IET=Incredibly Expensive Trains ! According to some critics.
In the early days of the project, many promises were made about the quality and reliability of these new trains.
Re: Problems with IET trains from April 2021 Posted by TaplowGreen at 08:50, 3rd February 2024 | ![]() ![]() ![]() ![]() |
Sadly as with so many things these day, IET built to a price ,not to a standard.
We need something more robust, successful and enduring - like the APT perhaps?
Re: Problems with IET trains from April 2021 Posted by Western Pathfinder at 08:43, 3rd February 2024 | ![]() ![]() ![]() ![]() |
Sadly as with so many things these day, IET built to a price ,not to a standard.
Re: IET bodyshells: surface coating failures, or corrosion? Posted by broadgage at 07:28, 3rd February 2024 | ![]() ![]() ![]() ![]() |
Regarding the LNER twitter thread, someone's remarked that water ingress at the windows is causing issues as it's able to travel to where it can cause galvanic corrosion. LNER's trains run in a somewhat salt-rich environment, and GWR's even more so, and this cannot help either.
Ah, but don't forget, both Hitachi and GWR have assured us that their IETs are 'Dawlish proof'

But only if not allowed to run in the worst conditions, an IET confined to the depot should survive Dawlish just fine.
Re: Problems with IET trains from April 2021 Posted by IndustryInsider at 19:07, 2nd February 2024 | ![]() ![]() ![]() ![]() |
Whatever happens it’s down to Hitachi to sort out as part of the maintenance contract.
Just like they are quietly doing with the cracks issue that people were getting excited about.
Re: Problems with IET trains from April 2021 Posted by FarWestJohn at 18:40, 2nd February 2024 | ![]() ![]() ![]() ![]() |
And that is just the parts you can see!!
Re: IET bodyshells: surface coating failures, or corrosion? Posted by PhilWakely at 17:21, 2nd February 2024 | ![]() ![]() ![]() ![]() |
Regarding the LNER twitter thread, someone's remarked that water ingress at the windows is causing issues as it's able to travel to where it can cause galvanic corrosion. LNER's trains run in a somewhat salt-rich environment, and GWR's even more so, and this cannot help either.
Ah, but don't forget, both Hitachi and GWR have assured us that their IETs are 'Dawlish proof'

Re: Problems with IET trains from April 2021 Posted by bobm at 16:17, 2nd February 2024 | ![]() ![]() ![]() ![]() |
It will be that salt ridden sea air on the Northumberland coast.....

Re: Problems with IET trains from April 2021 Posted by broadgage at 16:15, 2nd February 2024 | ![]() ![]() ![]() ![]() |
Aluminium is very vulnerable to corrosion especially if in contact with steel.
Did someone use steel fixings at the factory?, or subsequently during maintenance, either is a rather basic error.
Even different grades of aluminium alloy are liable to corrosion if used in contact with each other.
Electrical leakage currents through aluminium structures can also accelerate corrosion. DC is worst.
IET bodyshells: surface coating failures, or corrosion? Posted by Mark A at 14:46, 2nd February 2024 | ![]() ![]() ![]() ![]() |
There's a Twitter thread running on the subject of visible corrosion involving LNER's IEPs, which put me in mind of a photo from December (hopefully visible below) showing either a failure in the surface coating or corrosion around a GWR IEP window. It's reasonable to wonder if these trains are going to have 'A problem'.
Regarding the LNER twitter thread, someone's remarked that water ingress at the windows is causing issues as it's able to travel to where it can cause galvanic corrosion. LNER's trains run in a somewhat salt-rich environment, and GWR's even more so, and this cannot help either.
Mark

Re: Problems with IET trains from April 2021 Posted by BBM at 13:47, 2nd February 2024 | ![]() ![]() ![]() ![]() |
Industry expert Gareth Dennis has posted on X some quite alarming photos of corrosion on LNER Azumas:
https://twitter.com/GarethDennis/status/1753413827067097297
Re: Problems with IET trains from April 2021 Posted by IndustryInsider at 11:18, 29th January 2024 | ![]() ![]() ![]() ![]() |
According to this, Unite accepted the pay offer:-
https://www.cityam.com/400-rmt-workers-at-hitachi-to-strike-on-saturday-until-1-february/
https://www.cityam.com/400-rmt-workers-at-hitachi-to-strike-on-saturday-until-1-february/
Thanks for that. Might explain the confusion.
Re: Problems with IET trains from April 2021 Posted by broadgage at 10:40, 29th January 2024 | ![]() ![]() ![]() ![]() |
Stickers have finally started appearing on the trolley/urn store in the middle of the IETs. Passengers have been confusing them for toilets since they were introduced!
How many crew can you get in a crew storage area ? what type of crew are stored there? how long can they be stored for? and has this been agreed with the Unions?

Two full sized crew, or three small ones.
Catering crew, mainly, possibly hitachi fitters
Two hours at a time, without being let out for exercise.
Strike bruvvers !
Re: Problems with IET trains from April 2021 Posted by ray951 at 08:39, 29th January 2024 | ![]() ![]() ![]() ![]() |
Stickers have finally started appearing on the trolley/urn store in the middle of the IETs. Passengers have been confusing them for toilets since they were introduced!
How many crew can you get in a crew storage area ? what type of crew are stored there? how long can they be stored for? and has this been agreed with the Unions?

Re: Problems with IET trains from April 2021 Posted by Southernman at 23:55, 28th January 2024 | ![]() ![]() ![]() ![]() |
According to this, Unite accepted the pay offer:-
https://www.cityam.com/400-rmt-workers-at-hitachi-to-strike-on-saturday-until-1-february/
A Hitachi Rail spokesperson said: “We are disappointed at RMT’s decision to carry out industrial action.
“We believe the combination of last year’s pay increase, and this year’s pay proposal, is fair and highly competitive in the current economic environment. As demonstrated by Unite members accepting the same offer this week and ending their planned industrial action.
Re: Problems with IET trains from April 2021 Posted by IndustryInsider at 22:37, 28th January 2024 | ![]() ![]() ![]() ![]() |
That dispute is only in Hitachi LNER depots, not GWR.
Not according to the official press release from UNITE:
https://www.unitetheunion.org/news-events/news/2024/january/national-strike-by-hitachi-rail-workers-over-pay
Re: Problems with IET trains from April 2021 Posted by grahame at 21:22, 28th January 2024 | ![]() ![]() ![]() ![]() |
The short forms are all down to the withdrawal of the Castle sets & IETs▸ being transferred westwards to cover.
Also covering the shortage of other DMUs. Last Wednesday one of the Bristol-Worcester workings was being covered by a 5 car IET.
There are 17 class 153 in store. One wonders if too early - I know the need for disabled loos these days but really wonder if 2 x 158 trains could run as 1 x 158 + 2 x 153. Of course, whilst one wonders, one expects there's a very good reason why castles and 153s (and the 6 stored 156s) could be be used.
Re: Problems with IET trains from April 2021 Posted by ChrisB at 21:18, 28th January 2024 | ![]() ![]() ![]() ![]() |
yes, indeed.
Re: Problems with IET trains from April 2021 Posted by TonyN at 20:52, 28th January 2024 | ![]() ![]() ![]() ![]() |
The short forms are all down to the withdrawal of the Castle sets & IETs▸ being transferred westwards to cover.
Also covering the shortage of other DMUs. Last Wednesday one of the Bristol-Worcester workings was being covered by a 5 car IET.
Re: Problems with IET trains from April 2021 Posted by ChrisB at 20:35, 28th January 2024 | ![]() ![]() ![]() ![]() |
Another poor customer experience for those aboard the 1635 Paddington to Plymouth 5 vice 10 and absolutely rammed according to my wife who’s on the train. First declassified. Not listed on JC as being short formed.
Could well be linked to the Hitachi maintenance staff industrial action which started yesterday and runs until Friday.
That dispute is only in Hitachi LNER depots, not GWR.
The short forms are all down to the withdrawal of the Castle sets & IETs being transferred westwards to cover.
Re: Problems with IET trains from April 2021 Posted by Timmer at 17:26, 28th January 2024 | ![]() ![]() ![]() ![]() |
I expect you will be told to be grateful they managed to find 5!
Or that it even ran at all. Next Sunday it won’t be.Re: Problems with IET trains from April 2021 Posted by Timmer at 17:24, 28th January 2024 | ![]() ![]() ![]() ![]() |
Journey check has now been updated to include the 1635:
16:35 London Paddington to Plymouth due 20:04
Facilities on the 16:35 London Paddington to Plymouth due 20:04.
Will be formed of 5 coaches instead of 9. Service full and standing from Reading.
I can assure the person writing this that the train was full and standing when it left Paddington.Facilities on the 16:35 London Paddington to Plymouth due 20:04.
Will be formed of 5 coaches instead of 9. Service full and standing from Reading.
Re: Problems with IET trains from April 2021 Posted by IndustryInsider at 17:21, 28th January 2024 | ![]() ![]() ![]() ![]() |
Another poor customer experience for those aboard the 1635 Paddington to Plymouth 5 vice 10 and absolutely rammed according to my wife who’s on the train. First declassified. Not listed on JC as being short formed.
Could well be linked to the Hitachi maintenance staff industrial action which started yesterday and runs until Friday.
Re: Problems with IET trains from April 2021 Posted by TaplowGreen at 16:56, 28th January 2024 | ![]() ![]() ![]() ![]() |
Another poor customer experience for those aboard the 1635 Paddington to Plymouth 5 vice 10 and absolutely rammed according to my wife who’s on the train. First declassified. Not listed on JC as being short formed.
I expect you will be told to be grateful they managed to find 5!
Re: Problems with IET trains from April 2021 Posted by IndustryInsider at 16:53, 28th January 2024 | ![]() ![]() ![]() ![]() |
Stickers have finally started appearing on the trolley/urn store in the middle of the IETs. Passengers have been confusing them for toilets since they were introduced!
Re: Problems with IET trains from April 2021 Posted by Timmer at 16:39, 28th January 2024 | ![]() ![]() ![]() ![]() |
Another poor customer experience for those aboard the 1635 Paddington to Plymouth 5 vice 10 and absolutely rammed according to my wife who’s on the train. First declassified. Not listed on JC as being short formed.
Re: Problems with IET trains from April 2021 Posted by PhilWakely at 09:10, 24th January 2024 | ![]() ![]() ![]() ![]() |
Answering my own question. Looking at Realtime Trains it was 166 207 as far as Exeter St Davids and then 150 248 forward from there. Thinking about it, are turbos cleared on the main line past Newton Abbot?
Yes
Re: Problems with IET trains from April 2021 Posted by bobm at 08:39, 24th January 2024 | ![]() ![]() ![]() ![]() |
Answering my own question. Looking at Realtime Trains it was 166 207 as far as Exeter St Davids and then 150 248 forward from there. Thinking about it, are turbos cleared on the main line past Newton Abbot?
Re: Problems with IET trains from April 2021 Posted by bobm at 08:19, 24th January 2024 | ![]() ![]() ![]() ![]() |
Was it even three coaches or was it swapped for two on the way? I am told it was 150 248 that arrived at Plymouth.
Re: Problems with IET trains from April 2021 Posted by TaplowGreen at 05:14, 24th January 2024 | ![]() ![]() ![]() ![]() |
Westbury to Plymouth in a Turbo??? Ouch.
Not ideal no. But fair play to GWR for able to provide something for travellers from Westbury onwards.Being a Turbo, there will of course be first class accommodation; just declassified.
Of course. One can only hope that said travellers were suitably grateful.
Re: Problems with IET trains from April 2021 Posted by IndustryInsider at 22:45, 23rd January 2024 | ![]() ![]() ![]() ![]() |
And Turbos routinely cover much longer trips such as Cardiff<>Portsmouth of course.
Re: Problems with IET trains from April 2021 Posted by Timmer at 21:39, 23rd January 2024 | ![]() ![]() ![]() ![]() |
Westbury to Plymouth in a Turbo??? Ouch.
Not ideal no. But fair play to GWR for able to provide something for travellers from Westbury onwards.Being a Turbo, there will of course be first class accommodation; just declassified.
Re: Problems with IET trains from April 2021 Posted by TaplowGreen at 21:01, 23rd January 2024 | ![]() ![]() ![]() ![]() |
Westbury to Plymouth in a Turbo??? Ouch.
17:36 London Paddington to Plymouth due 21:25
17:36 London Paddington to Plymouth due 21:25 will be reinstated.
It will be started from Westbury.
It will no longer call at London Paddington, Reading, Newbury and Pewsey.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 3 coaches instead of 9.
First class not available. Catering is not available. There are no reservations on this service. Toilet facilities are reduced. Disabled toilet facilities are reduced.
Re: Problems with IET trains from April 2021 Posted by GBM at 08:33, 18th January 2024 | ![]() ![]() ![]() ![]() |
I'm not sure if it was at our "Meet the Manager" but I have heard that said. But then more are needed now that the HSTs have been reduced to just three daily diagrams.
Re: Problems with IET trains from April 2021 Posted by grahame at 22:04, 17th January 2024 | ![]() ![]() ![]() ![]() |
Didn't the MD of GWR advise the forum "Meet the Manager" that they were in the process of arranging with Hitachi better availability of IET's!
I'm not sure if it was at our "Meet the Manager" but I have heard that said. But then more are needed now that the HSTs have been reduced to just three daily diagrams.
Re: Problems with IET trains from April 2021 Posted by GBM at 21:32, 17th January 2024 | ![]() ![]() ![]() ![]() |
The 1635 Paddington to Plymouth was only five vice ten, only went as far as Exeter, was absolutely rammed leaving Paddington and was not listed on Journeycheck as being shorformed. I know II has mentioned before you can’t rely on JC to give the complete picture.
I had elderly relatives on this train. Fortunately they just managed to get a seat, though not together and certainly not the ones that I had been booked for them.
The reason given was the usual ‘more trains than usual needing repairs at the same time.’
Didn't the MD of GWR advise the forum "Meet the Manager" that they were in the process of arranging with Hitachi better availability of IET's! I had elderly relatives on this train. Fortunately they just managed to get a seat, though not together and certainly not the ones that I had been booked for them.
The reason given was the usual ‘more trains than usual needing repairs at the same time.’
Re: Problems with IET trains from April 2021 Posted by Timmer at 19:43, 17th January 2024 | ![]() ![]() ![]() ![]() |
The 1635 Paddington to Plymouth was only five vice ten, only went as far as Exeter, was absolutely rammed leaving Paddington and was not listed on Journeycheck as being shorformed. I know II has mentioned before you can’t rely on JC to give the complete picture.
I had elderly relatives on this train. Fortunately they just managed to get a seat, though not together and certainly not the ones that I had been booked for them.
The reason given was the usual ‘more trains than usual needing repairs at the same time.’
Re: Problems with IET trains from April 2021 Posted by bobm at 19:19, 17th January 2024 | ![]() ![]() ![]() ![]() |
Lower availability today in Cornwall
05:03 Penzance to London Paddington due 09:55
Facilities on the 05:03 Penzance to London Paddington due 09:55.
Will be formed of 5 coaches instead of 10. There are no reservations on this service. (No added coaches at Plymouth).
Also
07:12 Plymouth to Penzance due 09:19
07:12 Plymouth to Penzance due 09:19 will be reinstated.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 2 coaches instead of 9. First class not available. There are no reservations on this service.
This turns into
10:20 Penzance to London Paddington due 15:27
Facilities on the 10:20 Penzance to London Paddington due 15:27.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 2 coaches instead of 9 to Plymouth. First class not available to Plymouth. There are no reservations on this service to Plymouth.
05:03 Penzance to London Paddington due 09:55
Facilities on the 05:03 Penzance to London Paddington due 09:55.
Will be formed of 5 coaches instead of 10. There are no reservations on this service. (No added coaches at Plymouth).
Also
07:12 Plymouth to Penzance due 09:19
07:12 Plymouth to Penzance due 09:19 will be reinstated.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 2 coaches instead of 9. First class not available. There are no reservations on this service.
This turns into
10:20 Penzance to London Paddington due 15:27
Facilities on the 10:20 Penzance to London Paddington due 15:27.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 2 coaches instead of 9 to Plymouth. First class not available to Plymouth. There are no reservations on this service to Plymouth.
I am told by a couple of passengers that the 10:20 was in fact formed of a 5 car IET. Looks like there was a set swap at Penzance with an incoming service from Bristol Temple Meads. The 5 car ran all the way to London with no change of train or attachment at Plymouth.
As reported on other occasions this wasn't updated on Journeycheck.
Re: Problems with IET trains from April 2021 Posted by GBM at 08:56, 17th January 2024 | ![]() ![]() ![]() ![]() |
Of course, residents in Melksham would be delighted to have a regular 2 car train daily with a half hour service!
So Cornwall shouldn't complain.
Re: Problems with IET trains from April 2021 Posted by GBM at 08:54, 17th January 2024 | ![]() ![]() ![]() ![]() |
Lower availability today in Cornwall
05:03 Penzance to London Paddington due 09:55
Facilities on the 05:03 Penzance to London Paddington due 09:55.
Will be formed of 5 coaches instead of 10. There are no reservations on this service. (No added coaches at Plymouth).
Also
07:12 Plymouth to Penzance due 09:19
07:12 Plymouth to Penzance due 09:19 will be reinstated.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 2 coaches instead of 9. First class not available. There are no reservations on this service.
This turns into
10:20 Penzance to London Paddington due 15:27
Facilities on the 10:20 Penzance to London Paddington due 15:27.
This is due to more trains than usual needing repairs at the same time.
Will be formed of 2 coaches instead of 9 to Plymouth. First class not available to Plymouth. There are no reservations on this service to Plymouth.
Re: Problems with IET trains from April 2021 Posted by a-driver at 23:57, 18th October 2023 | ![]() ![]() ![]() ![]() |
The IET which failed at Teignmouth this morning seems to have been moved to Newton Abbot platform 1 and is currently sitting there with a headcode 5H17. Is this saying what I think it means?!
No, that’s the IET that failed at Teignmouth Tuesday evening on 1C92