Correct amount of freon
Diesel Bomber
Joined: Jul 2009
Posts: 1,861
Likes: 86
From: Kingwood, WV
Correct amount of freon
Get a wiring diagram, trace the wires... It may take a little bit of guessing out of the mix. I'm guessing the two small wires are the compressor coil wires but I couldn't imagine what the heavier gauge wire would be for. Ever think the switch in the back of the blend control is bad?
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Diesel Bomber
Joined: Jul 2009
Posts: 1,861
Likes: 86
From: Kingwood, WV
Correct amount of freon
Took two pictures of the same diagram. It's for 92-93 pick ups. Not quite diesel specific so idk if a diesel would actually have a WOT cut out relay like the diagram or if it's built into the PCM and goes off of TPS signal. Still no 3rd wire depicted tho... I do believe the black thing is the cycling switch.
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Diesel Bomber
Joined: Jul 2009
Posts: 1,861
Likes: 86
From: Kingwood, WV
Correct amount of freon
If you have an e-mail PM it to me and I'll send those pics over to you thru e-mail. They dramatically degraded the quality of that pic
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Diesel Enthusiast
Joined: Mar 2011
Posts: 162
Likes: 23
From: swampeast mo
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Diesel Bomber
Joined: Nov 2009
Posts: 1,026
Likes: 45
From: Ohio
You the man!
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Thanks again Rocky, intending to do this asap! I can't wait to crank some cold a/c!
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Thanks again Rocky, intending to do this asap! I can't wait to crank some cold a/c!
Last edited by Billy D; Jun 5, 2011 at 08:19 PM. Reason: Automerged Doublepost
Diesel Fan
Joined: Apr 2011
Posts: 16
Likes: 1
From: IL
Has any one here tried out Enviro-Safe (ES-12a) in their truck heard its some cold stuff comparable to r12 and colder than 134 o and here is a link for AC parts for are trucks AC Compressor | Evaporator Core | Fuel Pump | Condenser | Water Pump | Clutch just ordered a new system for my truck original r12 and the compressor locked up yesterday when it was 98 out 
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Diesel Bomber
Joined: Nov 2009
Posts: 1,026
Likes: 45
From: Ohio
OK, I did the ISO relay, hooked it up as the link said(BIG OLE THANKS ROCKY!!!) and the compressor is running, but doesn't seem to be cycling. Could this be right? My a/c is barely cool, It won't take any more freon, I got 10 psi while the comp is running, and it baries the needle when I shut the comp. off while the truck is still running. Thanks again Rocky. Any help as always is GREATLYYYYYYY appreciated!
