Stange Noise from Rear of Car
2002 SSEI supercharged, 61K miles
There is a strange noise I've noticed coming from (as best as I can deduce) the passenger side rear quarter of the car.
The noise, as best as I can describe, is a very high pitched whinning sound. Not a grinding noise, it is very consistant, it SOUNDS like a motor or some other high RPM device. It is NOT the ride leveling compressor, I can hear that working correctly when I first start my car, and that noise is a deeper almost chuggin sound which goes away within 10 seconds. I hear the sound when the car is on, moving and varing RPMs do not affect the sound. It is intermittant, although if I hear the noise it will continue until I park the car for an extended period of time and it cools. It seems that it happens when the car gets hot, and it almost certainly happens if I drive for an extended period of time.
If the noise starts, and I park the car and turn it on and off, the noise will start again when I start the car. But, if I allow it to sit and cool, it will go away.
I have crawled under my car several times, and I cannot for the life of me figure out what it is. Every gearhead I know can't diagnose it.
Any help will be much appreciated.