Phantom coolant leak (2.7T)..
10-03-2005, 07:29 AM
#1
AudiWorld Super User
Thread Starter
Phantom coolant leak (2.7T)..
..hey all, for the past month I've been noticing a coolant odor around the front end of my car. I also noticed that the coolant reservoir was/is a little low. I poked around under the hood and didn't see any obvious signs of FLUID leaks (white/pink deposits and water tracks), but I defintely smell it when it's hot.
Awhile back I fixed a leaky T-fitting by using some sealant and a 'real' hose clamp, which solved the problem. I would assume it's still holding; if there was a leak there, I'd see signs of fluid...it's dry as a bone.
Any BTDT with this kinda thing? Some one suggested the coolant reservoir might have a small crack, but alas..no signs of leakage!(?). Thanks, as always, in advance.
Awhile back I fixed a leaky T-fitting by using some sealant and a 'real' hose clamp, which solved the problem. I would assume it's still holding; if there was a leak there, I'd see signs of fluid...it's dry as a bone.
Any BTDT with this kinda thing? Some one suggested the coolant reservoir might have a small crack, but alas..no signs of leakage!(?). Thanks, as always, in advance.
10-03-2005, 07:42 AM
#3
AudiWorld Expert
2nd that. My after-run pump failed, had to take it to dealer to fix...
but luckily, covered under warranty for me! They had the car for two full days.
No signs of a leak other than the low coolant warning light and a low coolant reservoir!
No signs of a leak other than the low coolant warning light and a low coolant reservoir!
10-03-2005, 08:03 AM
#4
3rd. There is a good write-up somewhere on AW on this job. Not easy, but not..
.... rocket science either.
The coolant would run down the back of the engine, and around the transmission.
The coolant would run down the back of the engine, and around the transmission.
10-03-2005, 08:52 AM
#5
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Re: Phantom coolant leak (2.7T)..
Sounds very much like my experience, which turned out to be the aux coolant pump, located under the intake manifold. I'd suggest crawling over the engine to have a look at the back of it near the firewall. If the aux pump (or a clamp) is leaking, you should be able to see it from this position. I've done a fairly extensive write-up complete with pictures of this operation. I recently had word from the AW tech folks that they liked it, but it doesn't seem to have been posted as yet. If you're interested in doing it yourself, give me your email and I'll send you a copy.
10-03-2005, 09:40 AM
#7
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I'll def do it myself; Please do forward it to my email. :)
Just click my username above where it says "Posted by absolutcq20v on..." and you'll get my hotmail address. Thanks in advance! 
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10-03-2005, 11:03 AM
#8
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4tro...$650 job at dealer. With your skills you should be able to tackle it. IIRC, the
write-up here on AW was for an S4 with the 2.7T engine. Took 8 hours or so. I've tried to find the post but can't locate it right now.... sorry.
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