Diagnosing Suspicious Noise - Ford ZX2.
My daughter’s car makes a noise that sounds to me most like a bad wheel bearing. She thinks it sounds like her brakes when the rotors have rusted after she has not used it for a few days. It is droning, whooshing, scraping noise. She says it started a few hundred miles ago. It changes pitch with speed. It does not change if the car is taken out of gear and rolling. (It is a manual.) It does not do it when standing still and the engine is revved in neutral. I jacked up one front wheel at the lower control arm and slowly engaged first gear at idle. It makes the noise. I did the same with the other front wheel. Same sound. (Note that the other wheel is on the ground and not turning when doing this test. The car does not have traction control or a locking differential.) No clicking or grinding from the CV joints when making a turn. Even at full lock. I think the only thing common to both axles when in gear would be the output shaft of the transmission. Thoughts?