mjames76

I wish I still had the mess I cut out from under my truck to show you. It never blew any fuses either but there were bare and corroded wires everywhere. I cut it all out and started from scratch. There is nothing I hate worse than hooking up to a trailer and having to work on the lights.

I noticed on mine after I finally got it running it wouldnt cycle unless we put a fan in front of the condensor at idle, but my fan shroud is broken top and bottom so it wasnt getting much flow at idle.

Well I finally got it figured out. It was the PCM. I swapped it with a friends and it came right on and is working like it should. Now to find a new PCM.

If I remember right my pressures while the compressor was running were 45/270 and it was probably 85-90*

Shouldnt that cause the lp switch to break the circuit. I can put my meter on both wires coming out of the switch with everything running and get continuity. Does anyone know which leg of the relay comes from the switch so I can check that.

Had this Cat stack on mine but it took up too much room.

I swapped relays with a known good one and with the truck running and ac turned to on I have continuity on the hp and lp switches. I can unplug the relay and plug it back in and the clutch will engage for just a second then go off.

Im new thanks to google I found this site. I am working on my first dodge so its a learning process. What I have is a 97 3500 2wd cummins 5 speed. I changed the ac yesterday and am having no luck at all getting it to run. I changed everything except the evaporator, pulled it down and had to bypass the relay to get the clutch to engage. We filled it using this method using gauges and it cools great. When we put the relay back in the clutch will not engage. We have check low and high pressure switches and they seem to be working. I am lost for what I need to do next.Also the previous owner hooked up an external voltage regulator on the alternator, so I am wondering if I am not getting signal from the computer. I dont know if it has any effect on the ac or not.I am in Tx and its getting hot fast so I sure would appreciate any help getting this thing going.