Q: When I start the car up I hear a hummimg sound. Even when I press the gas pedal I can hear it. What could this humming sound be?

asked by on November 29, 2016

Had my accelerator pedal changed a few months ago. Since then I've been hearing a humming sound when I start the car up and press the gas pedal.. Took it back to mechanic he said it was my power steering and he changed the pump I think . The noise was not as loud as it was,but very faint. After a while the humming came back. I got my money back from that mechanic because it seems as though he was trying to guess at what it was.

My car has 127000 miles.
My car has an automatic transmission.

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