You need to make sure this is actually the engine. Because if it was, it should make this noise anytime engine rpm increases, in park or drive.
So do you hear this noise while the car is moving only? (If your car is in drive, but foot on the brake, do you hear the noise?)
Does the noise increase with speed?
Sometimes the powersteering pump will make this noise when there's a load placed on it. If it were the water pump, alternator it would make this noise no matter in park or drive. Your a/c compressor would only make a noise when it's turned on.
Keep in mind, a bad hub/wheel bearing makes this noise as vehicle speed increases and sounds as if it's the engine/tranny. Are you sure it's not that?
Monday, November 22nd, 2010 AT 2:16 PM