Fix droning noise from car on Cavalier and Sunfire Cavalier or Pontiac sunfire
Got one of these with the 2.2L (Vin4) engine? The droning noise happens most at high outside temps with the engine idling and the A/C on. The problem is the accessory drive belt developing a resonance in the span between the alternator and A/C compressor. The fix is to install a newer design belt GM #12575450. The new belt is made out of a newer rubber compound that eliminates the noise.
© 2012 Rick Muscoplat