ok earlier i asked about taking the AC system from my dailey driven 95 civic dx with 170,XXX miles. well if i can find a way to keep my motor from overheating when i push the AC buttom i may keep it. someone told me it may be my head gasket...but my coolant or my oil level does not drop at all so my head gasket is still good. what do u guys think it is? just to emphasize my motor ONLY overheats when i push the AC buttom.