Recently my car has begun to make a high pitched whistling sound while driving. It generally takes about 10 minutes before it shows up at all (so the first 10 minutes the car drives fine without any noise). The engine light is not on and the whistling does not affect the capability of the car at all. The whistling will change pitch and loudness with acceleration. When I press on the gas the whistle becomes lower pitched and much quieter but as soon as I let off of the gas or level out in speed it stays as high as possible in sound and pitch. The sound is coming from the center of the engine, near all four cylinders (but that is also near the air intake).
Wednesday, June 27th, 2012 AT 11:59 PM