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Old 04-20-2018, 05:26 PM
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X5only X5only is offline
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Quote:
Originally Posted by rocksteadyX5 View Post
So I have been reading up on the dreaded rear coolant link on the N62 engine. I have the '04/4.4i with a leak back there and I am contemplating replacing the valley pan and the pipe. But if the understanding is that the only way to fix a leak on the passage cover is to drop the engine and the tranny. UGH!!!

What I want to understand is how does the coolant get into the "Rear Coolant Passage Cover"?
Is it from the rear seal of the valley pan pipe? or does the valley pan pipe expel coolant into that passage cover and the seal of the passage cover eventually fail?
My '05 4.4 used to leak coolant in the rear after being parked for several days, and I had a sinking feeling in the pit of me wallet. It ended up being the coolant pipe leaking. I tackled the project myself replacing the water pump, coolant pipe (with the collapsible version, not OEM) and valley pan gasket. Look carefully in the valley pan area for signs of dried coolant. You may be in luck The project is not hard.
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.

Last edited by X5only; 04-20-2018 at 05:33 PM.
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