I've had problems for a while with the car that seem to be pointing to a bad heater core (wetness under the passenger side mat on the floor, almost impossible to defrost windshield). The newest thing is that if my car is in park and idling, it sounds like the engine is revving. This happens every couple of minutes. Does anyone know what can cause this and how much it will cost to fix? I'm going to take it in but am trying to see if it's all related to the heating core. Thanx!
the engine sounds like it's revving only when i put the air on.
the engine sounds like it's revving only when i put the air on.