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2004 A6 2.7T Engine Squealing Noise after TB change

2004 A6 2.7T Engine Squealing Noise after TB change

 
Old 05-07-2013, 05:01 PM
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Default 2004 A6 2.7T Engine Squealing Noise after TB change

Need some help on what this squealing noise might be after changing the TB and all the tensioners, rollers, and all the usual stuff. The TB Kit was from ECS Ultimate TB Kit with Gates. Did everything by the book and from some of the well written TB change DIYs on all of the Audi forum sites. After driving the car about a month this squealing noise appeared when the car is cold and started first in the morning and squeals for about 5-10 minutes then goes away for the rest of the drive. It needs to be sitting for hours before it comes back. Any ideas what this might be? I placed a couple of videos of the squealing sound problem. The first one is when the car is started in the morning and the second is when the squealing is just about gone after nearly 10 minutes later.

Thx in advance for any help!

-Rob

Engine Start:


Squealing Ending:
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Old 05-07-2013, 06:06 PM
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I really would pull the serp belt off, start it, see if the noise is gone, if not, you know its timing belt. Most of these kits you buy dont exactly have the highest quality stuff in them, so i wouldnt be surprised if something is defective.
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Old 05-10-2013, 10:06 AM
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I guess that would be ok to run the engine without the serp belt for a few seconds, right? Any other thoughts from all the experts?
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Old 05-15-2013, 12:47 AM
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The gerbils get mad if you don't feed them when changing the timeing belt.

Sounds like you are lacking tension in one of your belts. The belts are cold and hard and thus slip more which is why you squeal when cold. Then the belts warm up and become more pliable and more friction is created so the sqeal goes away.

I bet its the serpentine belt because timing belts have teeth but not everything in there uses those teeth so it's not impossible. You could get some belt dressing and spray it on the serpentine belt while its squealing; if the squealing is resolved you have a faulty tensioner somewhere in the serpentine belt system. Otherwise you need to deal with that timing belt.
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