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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

ac clutch??

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Old Sep 1, 2009 | 05:31 PM
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bleeds blue's Avatar
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ac clutch??

Have a 96 CC short bed 4X4 with the PS. The ac stopped working today. I charged it earlier in the season so I threw the gauges on her. On max ac the clutch turns on and off. It will be on for 2 to 3 seconds then turn off for about the same time. The pressure is good while it is on. Is the clutch bad or is there some sort of relay that could have gone out?
 
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Old Sep 1, 2009 | 05:45 PM
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No AC expert here but,

Sounds low on freon again, did you jumper the low side switch? If the compressor continued to run with the jumper in place its low on freon.
 
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Old Sep 1, 2009 | 05:47 PM
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not freon, 134.

like always, i suggest going to a ac pro.
 
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Old Sep 2, 2009 | 05:35 PM
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I threw the gauges on it and when the clutch was engaged the pressure was fine. I havent tried the jumper wire yet though.
 
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Old Oct 19, 2009 | 11:20 AM
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was low. Took an entire can
 
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Old Oct 19, 2009 | 11:43 AM
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As noted before it is normal for the clutch to cycle on/off depending on the ambient air temp/humidity as well as the cab temperature. What were the gauge readings hi/low as well as the ambient temperature and center vent temperature? Simply stating the pressures were ok is not detailed enough to make even a slightly educated guess of the root cause here.

Any A/C system can be very dangerous to work on. It does help you do have a gauge set, but add a cheap thermometer to your toolbox.
 
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