When I first drive it in the morning I get a humming noise when I accelerate from a cold start down the alley in back of my apartment. If I let up on the gas pedal and then press it again I can stop & start a repetition of the noise.
SPEED: Less than 20 MPH
If I let up on the gas pedal, the noise stops – which for me eliminates a lot of causes.
Another clue is that once my Camry warms up the noise seems to go away.
It’s a 2006 LE, but has less than 80K miles.