AC compressor turns on and off rapidly

Old 07-17-07, 03:45 PM
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AC compressor turns on and off rapidly

I've got a 2000 Nissan Frontier p/u, 4 cyl, 2 wd, manual. I recently added some refrigerant to the AC system and it showed that it was full and in the green. I also recently had my AC belt adjusted that was slipping some when the compressor came on. Now what I'm noticing is that when I first start up my AC on max at full speed, the compressor turns on, then off, on, then off, etc. about every 5 seconds. This goes on for a while until the interior begins to get cool, or if I turn down the fan speed or turn the temperature knob to warmer. What could be causing this?

Old 07-18-07, 04:23 AM
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Could be lots of things. Low refrigerant, bad pressure switch, short in the clutch wire. Unless you put gauges on it to check pressures we don't have a chance in knowing what it's doing.

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