Sorry for the long post I gave car in garage today for this problem to get inspected. So I purchased genuine parts from tegiwa a tensioner pulley idler pulley and got aux belt from Honda dealer. I was assuming that the whine was from these 3 things. The local independent mechanic who had car in works on his own rs4 b7 so I guess he knows what he's doing. So dropped car in morning he took off tensioner pulley idler pulley and left car on tick over with belt off revved car up to 3krpm noise was still there. Further inspection he has said that the noise is coming from the aircon compressor and thats the part I will need. He said that the bearing is dry. Now I need help from any owners of the forum who have previously come across this sort of problem. Spoke to someone at tegiwa today as I wanted to return tensioner pulley because this wasn't needed he advised me to remove that air con compressor if im not using it. Is there ant chance I will be able to get hold of this part from a breaker or used as I don't want to spend silly money on this sort of part cheers haz
Sure ive got this same whine, started few months ago
Today ive put new bearings in both the top idle pulley and belt auto tensioner pulley casue they were both noisey
When i had the drive belt off, i checked the air con pump pulley, just spinning it by hand it sounded a little nosiey (dry bearing type sound)
So i started my car up without the drivebelt on for a few mins, could still hear this whine, yet the aircon pump pulley wasnt spinning cause no belt on
The only pulley that was spinning was the bottom crankshaft pulley. I watched the crank pulley for a minute while spinning, it looked like there was very slight wobble/play in it, Is this normal? Was it just because belt was off..
Anyway after putting my drivebelt back on with the new bearings in the idler and tensioner pulleys, been for a drive and the annoying whine is still there...
. I was certain it would have gone cause the 2 bearings i replaced were bad, specially the auto tensioner one, real noisey / rattley
Any further info on this air con thing would be great, what was making the whine on urs? What part of the aircon unit etc?
Thx