Thread: Where is that whining noise coming from...

The whining noise in mine is usually from the passenger seat area...
...and funnily enough in exactly the same circumstances

I just replaced my A/c clutch pulley after this whine sound came. At first I thought it was the transmission packing it in. I did it with engine revs, and would die down when backing off. In Neutral also, not heard at idle only when driving. I swore it was from the auto, but disappeared after a $30 bearing replacement

thanks for that so if i take the belt off and give that pulley a spin i should get an idea of whether or not that pulley is up to scratch? also if it was the release bearing would the noise change with the clutch being in or out?

All check the Serpentine Belt alignment. Even one groove out on one pulley such as the alternator it will start whining over time.

Originally Posted by discobaz4311

thanks for that so if i take the belt off and give that pulley a spin i should get an idea of whether or not that pulley is up to scratch? also if it was the release bearing would the noise change with the clutch being in or out?

Answer yes, the noise would definately change from the throwout bearing. noise would increase as bearing loaded, ie clutch pedal pushed in.

And yes I would remove the drive belt and have a feel of all of the pullies. Another way is to use a piece of rod or garden hose like a stethescope, on or in front of pulley bolts or components with engine running. Just don't let anything get caught in the belt or its all bad.

Originally Posted by wopac5

The whining noise in mine is usually from the passenger seat area...
...and funnily enough in exactly the same circumstances

Yet somehow not when you are in that passenger side, am I right lol

ok so ive run the engine and felt and listened to the pulleys with the garden hose which worked a treat, and im pretty sure its coming from the a/c compressor pulley. I know "its not worth complaining" replaced his pulley bearing, do i need any special tools to remove this from the compressor or is it pretty much a straightforward exercise?

I actually think it is the bearings in the two idler pulleys. When you take the belt of and you spin the two pulleys and they feel rough that's your whining noise. We had the same problem in our Disco, give it a look and it might be your noise.