Any ideas? I swapped an EFR onto my car and since then I have not had any heat in my car at all. The AC also is not blowing cold, cool, but not cold. I can hear the compressor kick on, and the rpm's drop slightly when I turn the AC on but it doesn't perform like it used to. My first thought was air in the coolant lines. We refilled the coolant lines by holding the overflow tank as high as possible and unfastening the small line on top of the motor. Filled until it was a steady stream coming out w/o bubbles. Since then we have held the coolant overflow tank up and repeatedly squeezed the upper radiator hose, both while the car was off, while it was idling, and at 2,500 rmp's. Also jacked the car up on the drivers side and repeated the previous process. No luck. The car is not overheating at all. And I live in TX where it is not unusual for it to get above 100 degrees. It stays well within normal operating temperatures even after hard driving. Anyone have any suggestions?