Upgrade Charge Air Cooler from Crafter 04L145749L -> 04L145749H

[deny_mx]

Good day,
I have been having issues with my T6 150hp loosing coolant, looks like charge air cooler is leaking, when I removed one of the black big air pipes in the bottom it was wet. My guess it is coolant and not oil, but hard to tell.


I could not find any reasonable price for the T6 charge air cooler (04L145749L) but found similar one for the crafter (04L145749H), they look identical on the photo, where is the catch, and price is good, brand new around £180, anybody had experience fitting one. ?
also looking into the parts diagram at ilcats looks like they are somehow compatible?
PS: looks like I have older model of cooler(04L145749F), but it was discontinued and need to install newer 04L145749L

 

[Blind_Spark]

I'm in a similar boat myself, 150 DSG loosing coolant, and intake has signs of coolant.
I have the 04L145749L fitted, I have just purchased a 04L145749M (the later revised part) from ebay form a 2020 T6 with only 5k on for £90

It hasn't arrived yet but apparently I'll need a few bits to make the later one fit.

 

[DXX]

My guess it is coolant and not oil, but hard to tell.

Will find even the smallest trace of water, worth keeping in stock.

https://www.amazon.co.uk/Water-Finding-Detects-harmful-Heating/dp/B00NU6C036/ref=asc_df_B00NU6C036/?tag=googshopuk-21&linkCode=df0&hvadid=309859607452&hvpos=&hvnetw=g&hvrand=6601786546487007652&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9045329&hvtargid=pla-553546391919&psc=1

 

[deny_mx]

I'm in a similar boat myself, 150 DSG loosing coolant, and intake has signs of coolant.
I have the 04L145749L fitted, I have just purchased a 04L145749M (the later revised part) from ebay form a 2020 T6 with only 5k on for £90

It hasn't arrived yet but apparently I'll need a few bits to make the later one fit.

How did it go? Did you managed to get it out? I have pulled mine and pressure tested and it look ok. I am puzzled now. Perhaps it only leaks when hot. I have plugged pipework and also plugged both ends of air duck with rubber gloves. I recon if it leaks they would inflate. Left it overnight.

 

[mmi]

How about EGR cooler? It also would bring coolant into intake manifold. Have you checked inside of the EGR pipe in front of the engine (yellow arrow in the picture)

 

[deny_mx]

How about EGR cooler? It also would bring coolant into intake manifold. Have you checked inside of the EGR pipe in front of the engine (yellow arrow in the picture)
View attachment 200771

It is bone dry, saying that. If it has slow.leak then it can dry out due to the temperatures.

 

[deny_mx]

further more research:
04L145749F cooler Dropped on 01/09/2018 in favour of 04L145749L
04L145749L Dropped on 01/09/2019 in favour of 04L145749M
Looks like 04L145749M is latest revision
source IFI :: Free services

 

[Blind_Spark]

How did it go? Did you managed to get it out? I have pulled mine and pressure tested and it look ok. I am puzzled now. Perhaps it only leaks when hot. I have plugged pipework and also plugged both ends of air duck with rubber gloves. I recon if it leaks they would inflate. Left it overnight.
View attachment 200703

Not well, I fitted the Later M Part, Everything seamed ok, Took it for good drive 40 min drive, got to my destination and coolant light came on... Argggh, topped up headed home, developed a misfire at 2k revs. Dropped it off to indie tech in Milton Keynes today for them to diagnose the issue.

I'll Keep you posted!

 

[deny_mx]

Will find even the smallest trace of water, worth keeping in stock.

https://www.amazon.co.uk/Water-Finding-Detects-harmful-Heating/dp/B00NU6C036/ref=asc_df_B00NU6C036/?tag=googshopuk-21&linkCode=df0&hvadid=309859607452&hvpos=&hvnetw=g&hvrand=6601786546487007652&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9045329&hvtargid=pla-553546391919&psc=1

Good point, and what I have found, air charge cooler has a lot of condensation and it can be false positive,
The best way to test is to follow VW procedure as per service workshop manual:

Using cooling system tester - V.A.G 1274 B- , generate a pressure of 2.5 bar. • The pressure must be maintained for over 10 minutes. • The pressure must not drop by more than 0.2 bar within 10 mi‐ nutes. No pressure drop: charge air cooler is leak-tight

 

[DXX]

Good point, and what I have found, air charge cooler has a lot of condensation and it can be false positive,
The best way to test is to follow VW procedure as per service workshop manual:

Hydrostatic pressure drop test, IMO I think the VW limit of 0.2B in 10 minutes is very slack. Once stabilised with a constant temperature you should not detect any drop at all. Avoid using rubber hoses as these will expand / contract making a leak hard to detect, keep all connections to the item to be tested as short as possible.