Lost power, overheated, bust hose, water got sludge, RAC say intercooler

[goltho]

Sitting on the M25 waiting for a 200-mile recovery. Car started losing power gradually over ½ mile so I checked the temperature and saw it was near max so I pulled over. Clouds of steam & boiling water from one of the coolant hoses at top front of engine. RAC patrol found thick sludge in coolant tank & diagnosed bust intercooler. He was sure it wasn’t the head gasket.

Thinking about it, the car’s been emitting black smoke under acceleration for the past week or so (that I’ve noticed); also when releasing the footbrake from stationary when in Drive, the car moved forward slowly as normal but with little rhythmic revs of around 2 per second.

The EGR is blanked and the car is MAFless after a 160 remap (for a year). I changed the O rings around 9 months ago.

Any input please? Thanks.

Dougie.

[Yorkshire GOC]

As i don't drive a diesel my observation would be i cannot recall a diesel HG going?

[Popcorn]

Are you sure that he said intercooler and not oil cooler, the intercooler doesn't have coolant running through it but the oil cooler does

[Lee T]

If oil and water are merging on a Diesel it's unlikely to be HGF but could be the oil cooler seperator plate rusted through. This thread may help you.
Lee.
https://the75andztclub.co.uk/forum/s...d.php?t=308982

[goltho]

Originally Posted by Lee T

If oil and water are merging on a Diesel it's unlikely to be HGF but could be the oil cooler seperator plate rusted through. This thread may help you.
Lee.
https://the75andztclub.co.uk/forum/s...d.php?t=308982

Thanks for that. I’m STILL sitting on the M25 shoulder (over 4½ hrs) so will check the link later.

Originally Posted by Popcorn

Are you sure that he said intercooler and not oil cooler, the intercooler doesn't have coolant running through it but the oil cooler does

He did say intercooler several times.

Dougie.

[macafee2]

Originally Posted by goltho

Thanks for that. I’m STILL sitting on the M25 shoulder (over 4½ hrs) so will check the link later.



He did say intercooler several times.

Dougie.

I hope not on the hard shoulder but at services.

macafee2

[goltho]

Originally Posted by macafee2

I hope not on the hard shoulder but at services.

macafee2

Nope, hard shoulder since 2:55pm. Battery now flat. Dark. No food or drink since 12:15pm. 3rd recovery ETA 10:00pm. May only be taking me halfway. What’s there not to love.

Have you ever removed the oil cooler?

[macafee2]

Originally Posted by goltho

Nope, hard shoulder since 2:55pm. Battery now flat. Dark. No food or drink since 12:15pm. 3rd recovery ETA 10:00pm. May only be taking me halfway. What’s there not to love.

Have you ever removed the oil cooler?

No, never removed the cooler.
That is some wait and on a motorway, scary. Bit surprised they did not tow you off the motorway.

Be a late night home for you

macafee2

[Mike Noc]

I removed one on the scrapper. There is a gasket at the base of the oil cooler, and if that fails oil can mix with the coolant even if the oil cooler itself is OK.

[goltho]

Originally Posted by Mike Noc

I removed one on the scrapper. There is a gasket at the base of the oil cooler, and if that fails oil can mix with the coolant even if the oil cooler itself is OK.

Thanks for that. I see there are two gaskets in fact. I’m inclined to change the cooler anyway as no way do I want to do it all twice (actually once is a ****ache).

Any pointers with gaining access to it e.g. removing starter motor/alternator. I’ve had the front end off several times so am familiar but haven’t had to do any engine maintenance with any of my diesels.

Dougie.