Greetings from SoCal,

I've been fixing a lot lately and I'm geting to the point of addressing this high pitched whine that starts ~40mph and will cease ~90mph.

My most recent smog test, while the car was on "the rollers", I noticed that the rear drivers wheel follows a slight eliptical pattern - not round.

The rear wheel bearings are original. I change the differential fluid every 60K miles and use synthetic 140 weight. The center bearing / bushing combo, all three u-joints and tailshaft bushing / bearing are good. I have an auto tranny.

The whine will stop if I take my foot off of the accelerator at anytime during the whine and coast. I'm thinking that I'll have the rear wheel bearings replaced, which should fix the eliptical pattern situation and then proceed to other possibilities if the whine is still there.

Any thoughts or experiences are appreciated.

Stormie - '88 240DL, 537,000 original miles, original owner, second tranny. HD Bils, TME springs, full poly bushings, adjustable panhard and torque rods, upper & lower chassis braces, power mirrors, power windows (switches in the center console!)