HELP Air Conditioner wiring diagram May 24, 2006, 04:50:46 PM Does anyone happen to have the wiring diagram for a 1988 5.0 with A/C and electronic climate controll? If you do could you post up the a/c diagram? I'm trying to find a wiring problem with mine and it would be a whole lot easier with the diagram. Quote Selected
HELP Air Conditioner wiring diagram Reply #2 – May 25, 2006, 10:38:48 AM What's wrong with your climate control, thunderjet? Quote Selected
HELP Air Conditioner wiring diagram Reply #3 – May 25, 2006, 02:22:54 PM Thanks jcassity:D .The compressor won't work when I put the a/c on. If I jump it the compressor will run fine but it won't come on when I put the a/c on with the climate control. I think I have a busted wire between the climate control and the low pressure switch on the accumulator and the compressor. I just want to check the wiring before I start replaceing components. Quote Selected
HELP Air Conditioner wiring diagram Reply #4 – May 25, 2006, 03:49:04 PM Good deal. Another thing that can cause the symptoms you describe is the wide open throttle switch. It would normally shut off the compressor if you were at WOT, but if it is malfunctioning or the wires at the plug that goes into it are frayed, it will cause the compressor to not kick on unless you jump it like you said. It might be easier to check first, since it is mounted all by its lonesome on the passenger side in front of the strut tower. Quote Selected
HELP Air Conditioner wiring diagram Reply #5 – May 25, 2006, 04:01:23 PM I forgot about the WOT switch. I'll check that first. I can't complain the a/c has worked for 18 years without a hitch so at some point something was bound to go out :rolleyes: . I hope that's all it is or I'll be tracing wires for awhile, which should be fun. Quote Selected
HELP Air Conditioner wiring diagram Reply #6 – May 26, 2006, 11:10:03 AM what happens when you jump the low presure switch plug with a paper clip?you already know it will run by putting power directly from the ac clutch head but now will it come on if you jump the presure switch?if so, your prob is either low freon or a worn switch.Ill assume the WOT relay contact side is normally closed so there should be continuity across the pink and black wires (5.0), I never did like how the illustrations in the evtm depict the relays.notice how the 3.8 is set up compared to the 5.0,, putting the presure switch on the other side of the wot relay,,, curious. Quote Selected
HELP Air Conditioner wiring diagram Reply #7 – May 26, 2006, 09:38:33 PM The system is fully charged so it has to be a switch or a broken wire somewhere. It worked fine last year it just went bad over winter storage:dunno: . I haven't had a chance to look at it yet. I was going to a car show tonight and my heater hose started to leak so I had to go home. I now have to replace the heater hose and clean my engine compartment, which I just deatailed:mad: Quote Selected
HELP Air Conditioner wiring diagram Reply #8 – June 04, 2006, 02:28:45 PM I finally got around to looking at it. The WOT switch was bad. I changed it and vola the a/c works again:D Quote Selected
HELP Air Conditioner wiring diagram Reply #9 – June 04, 2006, 10:34:18 PM When I got the sled the WOT relay and the cycling switch were both bad. Quote Selected
HELP Air Conditioner wiring diagram Reply #10 – June 05, 2006, 01:05:52 PM YAAAY!! I guessed right!!! Quote Selected
HELP Air Conditioner wiring diagram Reply #11 – June 07, 2006, 01:14:37 PM You win the old WOT switch. I'll plate it in gold and send it to you Quote Selected
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