A whisteling noise can be many things. It could be from a belt, a vacuum leak, a part that has been moved and hitting the air flow in a different manner. The best thing to do is to open the hood and see if you can identify where the sound is coming from. Check the air intake for disconnected or cracked hoses. Also, since the engine was sprayed off, make sure the belt isn't contaminated with oil or dirt allowing it to slip and make a noise.
Tuesday, February 1st, 2011 AT 7:16 PM