Hi, this is my first post on this forum and I hope I get to know you all better.
That out of the way, I have a 1996 Ram 1500 4x4 5.9 Reg. Cab SWB. Since i bought the truck three months ago the A/C hasnt worked. Now that its summer, it has moved up on my priority list. It's between 95-105 during the day here and I am tired of riding with 100 degree wind blasting in my face with the windows down. City driving is even worse. I am very mechanically inclined so fire away, I'm just stumped at the moment.

I'll start with what i know for sure:

1. The A/C clutch does work, i straight wired it from the wires on the clutch to the battery.

2. Freon is @ the right pressure.

3. The relay is good. When i leave the switch on and re-insert the relay, it clicks. I have also tried other relays.

4. I have jumped the pressure switches one at a time and simultaneously on the accumulator and the line on the compressor.

5. When i backprobed the connector to the actual clutch the circuit was open and there wasn't any voltage on either wire checked to a direct ground.

6. When i straight wired the clutch and cycled it using a gauge on the low side, the air in the cab was cold and blowing fine.

I know the pcm is receiving the signal because i can hear the rpms increase. I am completely stymied. Let me know what you guys think.

P.s. Hurry its hot as hell over here!!!

 

i just fixed mine, the clutch wasnt working shop put freon in and still nothin. ac clutch relay was good. i had a previous problem that when i honk my horn it blew the fuse. well i put a new fuse in for the horn and the compressor started working. found out my lower horn was shortin out and for some reason it was shortin out the ac compressor so it wasnt working. just a thought you can check yours

 

Fixed it, I cannot believe it. I spent all afternoon yesterday and today messin with it. If i had 20 dollars to give ya i swear id send it next day air. I really appreciate it.

 

glad I could help. who would have thought the two had anything in common. it took me like a week to figure out.

 

I know i even traced the wiring back a bit but ran out of patience. I was about to go crazy because it really didn't make sense. I checked everything 2or3 times and nothing happened. I almost want to check and replace all my fuses and see if something else happens.