My '94 Olds Cutlass Ciera 3.1 engine - 27,000 miles: At speeds
above
around 30 MPH I am hearing a slight "rhythmic throb" -- or "wah, wah"
sound. It doesn't appear to be associated with the automatic transmission
because when I put it in neutral while driving down the road and let the
engine idle - the sound is the same. When the car is stopped with engine
running I don't hear the sound. I'm guessing that it is a wheel bearing
just starting to go bad. However, when I jack each rear wheel up and spin
it by hand, I can't notice any thing unusual. When I jack each front
drive
wheel up individually, put the transmission in drive and spin the wheel
with
the engine I can't hear the sound either. Any ideas? Thanks Gene
