AC is F-ing up. Help Please - Ford Powerstroke Diesel Forum
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Old 06-14-2009, 03:45 PM
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AC is F-ing up. Help Please

99 F250 Super Duty 7.3

Recently charged my AC and it works fine UNTIL- I get going down the highway (60 mph) then it starts blowing warm air. When I turned off the highway the compressor kicked on again and worked for a little bit, then quit again. When I parked it here at home I opened the hood to see the compressor was not working at all. Later, I went out to see if would work. Turned on the AC, and it took a few seconds for the compressor to kick on, then it stayed on like it should, then after it had been running for a while it kicked off for a few seconds every so often, which I think is normal, right? So what can it be? Relay? Compressor? Clutch? Help please!
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Old 06-14-2009, 03:48 PM
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i need to know also cause i dont get ac as well for almost the same reasons
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Old 06-14-2009, 03:48 PM
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Sounds like either a bad clutch or switch. Anyway, here's a
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Old 06-14-2009, 03:52 PM
wriott
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could also be the switch, had mine go bad and it would work intermittently
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Old 06-14-2009, 03:52 PM
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wheres the switch?
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Old 06-14-2009, 03:58 PM
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Quote:
Originally Posted by bockhold View Post
wheres the switch?
It's on the compressor.
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Old 06-14-2009, 04:01 PM
wriott
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Quote:
Originally Posted by RadarRider View Post
It's on the compressor.
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Old 06-14-2009, 04:02 PM
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is that the 2 wire plug?
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Old 06-14-2009, 04:07 PM
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You didnt over-charge it did ya?They dont like it when there over about 46 on the low side,,with the rpms up around 1700.
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Old 06-14-2009, 04:08 PM
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is the compressor supposed to kick off occasionally? As to keep the evaporator core from freezing up completely?
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