Its likely your serpentine belt is squeaking. Mine does this occasionaly. I just leave it alone ---it goes away eventually. If it really bothers you, for a temporary fix you can spray a light coating of wd-40 on the belt while its turning.arnoldrover said:thanks. its only when i am off the accelerator. the first second of any press of the gas pedal, the noise disappears. there is also a squeak when i back up and am braking light and the response has been to turn the rotors then use sand paper on the pads and round the edges.