1997 f250 ac not working, no power to compressor. help. - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 07-12-2013, 03:48 PM Thread Starter
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1997 f250 ac not working, no power to compressor. help.

My obs 97 has not had working AC since I got it in January. Now that the temps have been 90+, it would be nice. It won't kick on or anything, checked thee plug in to the back side of compressor and it had no power to it. I checked the same place on my friends 96 f150 and his had power... the fuse in the daah looked good for mine, is there a relay for it that could go bad or anything else I can check?

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1995 f-250 rclb
7.3~317k miles & countin
3" Downpipe
Superduty 10.5" 3 pinion Trac-Lok rear
Dana 60 s.a.s

1997 ccsb , 353,500 miles
5" lift on 315x75x16 cooper at3's.
Clear headlights, tinted tails, rear buckets,
Dana 60 swap, zf5 swap.
rosewood 180/100's, t500 hpop, php hydra, e fuel.

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post #2 of 5 Old 07-12-2013, 03:57 PM
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When is the last time you had the Freon level checked. I don't know a lot about AC systems, but there may be a pressure switch in there that protects the compressor from damage if the pressure is too low.

Throwing it out.


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post #3 of 5 Old 07-12-2013, 04:16 PM Thread Starter
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Haven't checked it at all. Didn't know they could have a pressure switch?

Nater
1995 f-250 rclb
7.3~317k miles & countin
3" Downpipe
Superduty 10.5" 3 pinion Trac-Lok rear
Dana 60 s.a.s

1997 ccsb , 353,500 miles
5" lift on 315x75x16 cooper at3's.
Clear headlights, tinted tails, rear buckets,
Dana 60 swap, zf5 swap.
rosewood 180/100's, t500 hpop, php hydra, e fuel.

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post #4 of 5 Old 07-12-2013, 04:21 PM
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There is a LOW pressure switch on the Dryer(passenger fender aluminum can looking thing BLACK)

Power comes there 1st. If there is NOT enough pressure the switch will NOT close and send power to the HIGH pressure switch(at back of compressor)

If you have power to there , jump the terminals on the plug with a short pice of wire and see if the compressor kicks on. IF it does, you are low on freon. You have a leaks somewhere and it all bled out. Have the leaks fixed, put a vacuum on the system and recharge the freon

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post #5 of 5 Old 07-12-2013, 04:58 PM Thread Starter
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Awesome and simple explanation. I will look into it tomorrow
thanks.

Nater
1995 f-250 rclb
7.3~317k miles & countin
3" Downpipe
Superduty 10.5" 3 pinion Trac-Lok rear
Dana 60 s.a.s

1997 ccsb , 353,500 miles
5" lift on 315x75x16 cooper at3's.
Clear headlights, tinted tails, rear buckets,
Dana 60 swap, zf5 swap.
rosewood 180/100's, t500 hpop, php hydra, e fuel.

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