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Old 18th November 2021, 01:44 PM
ulfilias ulfilias is offline
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Default Oil Cooler - Coolant leak

Hi There,

Noticed a bit of a big puddle at the front of the D3 4.2 Petrol V8 this morning. Topped up the coolant, which i'd done the day previous and popped it over to my local friendly mechanic!

Just had a call that he's had a look and the coolant leak appears to from some pipes and bits in regards to the oil cooler, though it is difficult to see without removing bits and getting a good way into the job.

He just looked up the book details to replace the oil cooler and they estimate 16hr!!!

Obviously i can keep topping things up in the short term, he said it wasn't leaking in the garage, but my drive does have a slope that i park nose down on, which may be a factor.

Anyway. Looking for advice, pointers and so forth!

Ta,
Lee
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Old 18th November 2021, 02:09 PM
MikkiJayne MikkiJayne is offline
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Default

The BFM has the same plastic pipe carrying coolant between the oil cooler and the block that the D2 does, so almost certainly it is the same failure where the pipe cracks with age and heat.

Its a 4-5 hour job on a D2. I'm not familiar enough with the D3 to suggest what other stuff would take 12 extra hours to remove and replace, but tbh taking the bumper off one was enough of an ordeal so I can well imagine it being a 2-day job. For a 10 part.
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Old 18th November 2021, 02:28 PM
strummagnet strummagnet is offline
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Quote:
Originally Posted by MikkiJayne View Post

Its a 4-5 hour job on a D2. I'm not familiar enough with the D3 to suggest what other stuff would take 12 extra hours to remove and replace, but tbh taking the bumper off one was enough of an ordeal so I can well imagine it being a 2-day job. For a 10 part.
Is this the reason you don't work on D3's MJ?
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Old 18th November 2021, 02:29 PM
ulfilias ulfilias is offline
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https://www.youtube.com/watch?v=NZXOry89y7A

Has the job and a "quick" way to do it. Though that is on a US car so, that may be a factor.

Seems the official way involves dropping the gearbox!!!

I'm now curious where to get the metal part!

https://www.ebay.co.uk/itm/124880119...UAAOSwniRWN001

has a brass one from poland for about 20

https://www.ebay.co.uk/itm/253756606...0AAOSwCyFbTP1-

Is an aluminium one from the states for 30+

https://www.ebay.co.uk/itm/203545275...wAAOSwx9lhB-iZ
Plastic 10

077-117-441-A / 077117411A - appears to be the part ???

Edit - Bought the plastic and brass ones. 30 gamble and good to have options
__________________
Current :
2005 A8 Sport 4.2 V8 D3 - LPG working!

Previous :
1998 S8 PF 4.2 V8 D2 - Gearbox died ~120k
2002 S8 FL 4.2 40v V8 D2 Prins LPG - Engine valves met pistons ~230K

Also :
1996 Jeep Grand Cherokee 4.0l (Post Apocalyptic makeover)
2003 Brabus Smart FourTwo (should sell)
2003 Mazda Rx8 2.3 (might sell)

Last edited by ulfilias; 18th November 2021 at 02:36 PM.
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