Strange noise. As it has gotten cold I noticed on start up there is a sound I've never heard before.
#11
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
normal. Mine and hundreads of others have the exact same issue. Mine only does it below 28°F. It goes away fast, I've heard it's a secondary air pump (cold air pump) just doing its intended job. It goes away completely after 5-8 mins of driving.
Thread
Thread Starter
Forum
Replies
Last Post
saabSean
A6 / S6 (C5 Platform) Discussion
17
05-13-2007 03:01 PM
HarnessedLunacy
S4 / RS4 (B5 Platform) Discussion
6
01-22-2002 09:00 AM