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  #1  
Old 08-20-2008
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A/C Problems

My a/c hasn't been working all summer. Finally hounded the mechanic at work here enough to finally look at it and he checks all the fuses and their fine and checks the electrical connection to the compressor. He said that was the problem was just the compressor not getting any power. BUT i dont have an owner's manual for the truck, so we couldnt tell if there was a fuse missing or something.

The air blows just fine its just not cold.

Any productive input would be appreciated

Thanks
Dan
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Old 08-20-2008
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Have you tried getting the AC recharged?
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  #3  
Old 08-20-2008
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Yes that was the first thing i did. The gauge on the can showed it being overcharged
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  #4  
Old 08-20-2008
04 EDGE
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Quote:
Originally Posted by black-n-blue View Post
Yes that was the first thing i did. The gauge on the can showed it being overcharged
the gauge on the can means nothing unless the compressor is engaged.

the can is a "low" side charge type, if the compressor is not engaged then its going to read high.

this is what you do, turn the ac on inside the truck, then unplug the low side pressure sensor, then use a small wire and jump the terminals on the plug. at this point the compressor should engage. if it does then you need to recharge the system as it is low.
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Old 08-20-2008
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Quote:
Originally Posted by 04 EDGE View Post
the gauge on the can means nothing unless the compressor is engaged.

the can is a "low" side charge type, if the compressor is not engaged then its going to read high.

this is what you do, turn the ac on inside the truck, then unplug the low side pressure sensor, then use a small wire and jump the terminals on the plug. at this point the compressor should engage. if it does then you need to recharge the system as it is low.
I did have the a/c running when i tested it with the "can", i didn't bring this up at first because i didn't think it was accurate. Today my guy unplugged the compressor and tried testing the plug and it didn't light up the fuse tester.


i assume i should do as you mentioned and "jump-start" it. What should i jump the terminals with?
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  #6  
Old 08-21-2008
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tried what mark suggested and nothing, anyone know what fuse controls the compressor?
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  #7  
Old 08-21-2008
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are you out of coolant?

i never run my AC so im just throwing out an idea.
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  #8  
Old 08-21-2008
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Power for the compressor goes thru the cycling switch (on the accumulator). Jumper it and see if power gets to compressor.

If so, bad cycling switch or really low on refrigerant.
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  #9  
Old 08-21-2008
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i have no owners manual.. can anyone point me in a direction of a diagram anywhere?
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  #10  
Old 08-21-2008
04 EDGE
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Originally Posted by Earl43P View Post
Power for the compressor goes thru the cycling switch (on the accumulator). Jumper it and see if power gets to compressor.

If so, bad cycling switch or really low on refrigerant.

wow i seem to have already posted that information
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  #11  
Old 08-22-2008
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Low pressure switch is not getting power compressor not working.What fuse or relay controls power too these.No owners manual.
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  #12  
Old 08-22-2008
04 EDGE
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i'll try to get the information tomorrow
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  #13  
Old 08-22-2008
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you can get a copy of your owners manual here:

https://www.fleet.ford.com/maintenan...ls/default.asp
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  #14  
Old 08-27-2008
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I am having that problem but when it's pumped straight to the battery the compressor kicks in and blows ice cold. I checked both switches and fuses and relays and nothing. I was trying to get the color of the wire coming out of the PCM to see if i was getting power there but nobody could give me the info just telling me to check my relays more.
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