Need help 92 Ford F250
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=43933
Printed Date: 29 Sep 2024 at 3:32pm
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Topic: Need help 92 Ford F250
Posted By: Sam NWMO
Subject: Need help 92 Ford F250
Date Posted: 16 Jan 2012 at 9:16pm
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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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Replies:
Posted By: powertech84
Date Posted: 16 Jan 2012 at 9:24pm
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Going off memory, but i think there's a sensor on the acumulator that controls the cycling of the compressor.
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Posted By: D-17_Dave
Date 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.
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Yea, I can fix that.....
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Posted By: 2wise4agm
Date Posted: 17 Jan 2012 at 10:35am
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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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Posted By: Sam NWMO
Date Posted: 17 Jan 2012 at 6:48pm
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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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