I have a 2002 A4 Quattro, 3.0L that had the timing belt service and all coil packs replaced back in mid December, since the morning after the install I noticed what sounded like a rubbing from the fan belt or somthing on a shroud.
I called the dealer, brought it in after work that day and the noise was gone when I got to the dealership.
The next morning the samething, I called the again, they said that it was more than likely breakin noice from the belt at start up, I explained that it sounded harmonic in nature, they said give it some time.

Well I have been driving it now for two weeks and the noise has went from slight to loud in my oppinion, and tends to go away after about an hour or so of steady driving, if it is cold it lasts longer and is louder, some days it is very slight and goes away quick, temps are between 20 - 30 degrees F.

I took it into a local repair shop for a quick look and they said it had air in the PS pump reservoir, so... that leads to my Questions; 1. How can I diagnose this correctly with out incurring additional charges, and 2. What is the procedure to remove the air from the system? (yes the reservoir is full, to the top of the MAX on the stick)

Thanx

noise can be heard from the distribution of the alternator belt. no longer hear you put water on it.