Air conditioning

Asked by Jun 15, 2009 at 01:43 PM about the 2005 Ford Five Hundred

Question type: Maintenance & Repair

Have a 2005 Ford Five Hundred, the air will not cool when just idling, but if your driving it cools just fine. Any suggestions what might be wrong?

2 Answers

75

That Used To happen to a truck i had, a 1999 GMC Sierra. Later on the truck would not cool anymore so what was wrong with it was a leak. pretty sure you have a leak on one of the lines or in the a/c compressor.

3 of 3 people found this helpful.

I had the same problem. In fact, one side would blow air that gradually lost the cool when idling at a stop (it will blow warm air when outside temperature was in the high 80s or higher when the engine was idling) even on recirculation. On recirculation, I would get a distinct smell building up inside the car. The Ford dealer said that there was a leak on that side of the a/c unit. He said that when idling, the engine revs are low and less power goes to the a/c unit. When driving, the revs are higher and the cooling overcomes the effect of the hot air getting in through the leak. I can't remember what he said about where the leak was, but I think he said something about bags or something on each side and one side was letting in air from the engine compartment. He said that I could test that was the case by idling in neutral and when the accelerator was pressed to increase the revs, the a/c air should gradually get cooler, if that was the reason. That is exactly what happened. They wanted to change the unit at over a $1000, but I am trying to see whether it can be repaired rather than replacing the a/c unit.

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