A/C oddities

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.


Supporting Vendor
Feb 16, 2005
Spokane, WA
Because my truck likes to get alot of moisture inside (bad weatherstripping letting rainwater in, and a couple other factors), I usually drive with the heat on full and the A/C on to prevent the windows from fogging up. Today I noticed that with the engine warm and idling, a minute or so after switching on the A/C, I'd hear a click like a relay disengaging (or a breaker popping?) and my engine would drop back to normal idle. If I'd wait 3 to 5 minutes and turn it on again, the same thing would happen. Any idea what the cause of this could be?
That's the A/C amplifier cycling the compressor. The compressor doesn't run continuously, it only runs as required to provide sufficient pressure/flow for the refrigerant.
Try leaving it on and you'll hear the cycling as it runs.

Users who are viewing this thread

Top Bottom