Not sure if this will help you or not, but I just got mine back from AC work today. I did the same thing, tried jumping both switches without luck, checked for voltage at the compressor, ect ect ect. When I hooked up the charge unit, I knew it was low, but I could not get it to fill since the compressor wouldnt kick on . 138 bucks later, my AC works again. It was low on freon, and while they were at it, I had them replace all the o rings and such to eliminate a few small leaks I had. Air blows ice cold now.
hopefully it'll keep going. shop told me i had leaky valves--i replaced them, put 4 cans of r134a and it blew COLD for about 3 days, then it leaked out again and now i'm back to square 1--where is the dog gamned leak!!!
Well guys to keep you updated I ordererd a CCRM. I have power going from the low pressure, then when I plug that in I have power at the high pressure switch, then no power at the compressor. It goes to the wot relay in the ccrm, and I believe this is the culprit. The only other reasonable thing would be is that the CCRM shut it off because it senses an engine performance loss, which I don't really have along with the fact I have no pcm codes.
FWIW, the computer is what would keep the A/C from coming on. For instance, when temps get too hot (in the 240's*F), it will kick the A/C off.
Nice work ordering a new CCRM. They're pricey little buggers as I recall. WHen mine goes, I think I'm gonna pull the wires to that given relay and run an external relay instead.
Well I have sort of bad news. I'm at work, with my new relay and decided to try it out. I unplugged the old ccrm, plugged in the new and kicked it up. Turned the air on and the compressor didn't budge. Well I'm pretty upset, I got a deal on the CCRM from a mechanic that I know brand new from a ford dealer. Well its still not working, I didn't get a chance to do any further testing, to even see if there is juice at the compressor.
The only other thing I think could be kicking it off is that the ccrm or computer I'm not sure which is seeing a performace problem and not letting the a/c turn on. I hope this isn't the case, I do have a slight misfire though. There aren't any codes though.
Besides that, I guess a wiring problem and a fuse are the only other culprits. Later I will try jumping both pressure switches and trying it with the new ccrm.
Wish me luck guys!
EDIT: Come to think of it, maybe I should have unplugged the battery for a minute or two...
Anyone have anything to add? Today I tried to get it running again, hooked up the new CCRM, still no juice at the compressor. I tried jumping the low pressure and high pressure switches, still no voltage at the compressor. I then unhooked the battery so the computer would reset itself and all the performance problems would be gone in case that was whats stopping the a/c.
I really don't know what to do anymore. The high pressure switch looked like it was going to anohter switch under the airbox, could this have gone bad?
I need guidance!