loud whirring/whining sound when starting up
11-17-2003, 07:32 AM
#1
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loud whirring/whining sound when starting up
For the first time, I started up my car this morning and heard a loud whirring/whining noise, almost like a fan motor was spinning but had resistance or something caught in the blades... hard to describe. It went on for about 5 seconds, and before I could wipe the stupid look off my face and get out of the car, it had gone away.
The car runs fine, I was boosting fine, everything seemed okay... any clues as to what to look for? Just a suspect of a cold morning? Thanks..
The car runs fine, I was boosting fine, everything seemed okay... any clues as to what to look for? Just a suspect of a cold morning? Thanks..
11-17-2003, 08:29 AM
#5
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As you put more miles on the car and the engine ends up with more wear
you will notice the secondary air pump come on for a few minutes while the car is in cold idle. If the pump stays on all the time or comes on while the car is already warmed, then I would start looking for issues.
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11-17-2003, 09:30 AM
#8
replace/check the combination valve. your pump is going to go soon.
theres a tech article from audi on this...its for my2000, but should apply to you as well.<ul><li><a href="https://forums.audiworld.com/a4/msgs/1797628.phtml">audi tech article</a></li></ul>