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Need help 92 Ford F250
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Sam NWMO View Drop Down
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Joined: 16 Jan 2012
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Sam NWMO Quote  Post ReplyReply Direct Link To This Post Topic: Need help 92 Ford F250
    Posted: 16 Jan 2012 at 9:16pm
I hope one of you can help me with a problem I'm having with my 92 Ford F250. The air conditioner compressor runs constantly and has this has caused the seals on the compressor to fail twice. I'm guessing the high pressure switch is bad, but I'm having trouble finding it. Anyone have a suggestion? Yes, I know January is a strange time to worry about an air conditioner, but I want to get this figured out and parts ordered while I've got the time to fix it. Thanks for your help.
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powertech84 View Drop Down
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Joined: 17 Oct 2009
Location: Wisconsin
Points: 461 		Post Options Post Options   Thanks (0) Thanks(0)   Quote powertech84 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2012 at 9:24pm
Going off memory, but i think there's a sensor on the acumulator that controls the cycling of the compressor.
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D-17_Dave View Drop Down
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Joined: 11 Sep 2009
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Points: 990 		Post Options Post Options   Thanks (0) Thanks(0)   Quote D-17_Dave Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 2012 at 9:58pm
The switch on the acumulator will be a low pressure switch. If it has a high pressure switch you should be able to trace the high side line and find it. Look near the filter with the site glass or near the fire wall bulk head connections.
Yea, I can fix that.....
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2wise4agm View Drop Down
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Points: 538 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 2wise4agm Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 2012 at 10:35am
I dont think 92 has a high side switch. Unplugging the connector at the ac clutch will keep it from engaging until you get it figured out. I assume that u know that the compressor runs when the defrost is on.
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Sam NWMO View Drop Down
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Sam NWMO Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 2012 at 6:48pm
Someone else at work told me they thought there was no high pressure side switch, but if that is the case, what keeps the compressor from running all the time? I thought all air conditioning compressors were supposed to cycle. Does it run constantly under normal operation, or am I missing what cycles it?
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