So my a/c stopped working. I jumped the hot lead form the clutch and YES the a/c blows cold. So I replaced the relay no fix, blower relay no go. Bypassed low pressure switch and nothing. Anything else before I call the mobile ac guy. Hate to pay 100 bux to find out its a hidden relay or something.

 

Might be the controller

 

What does that thing do? We swaped a ac switch last night no go. Im just going to assume its low I gave the low side a little pop on the valve it had presure. Its going to paint on friday so I wont be able to mess with it for about a month.

 

Just because it had pressure on it doesn't mean the pressures are high enough. Get a can and put in it. Might have to jump the compressor to get it to "take". Other than that, the A/C button can be bad. Are you applying 12v to the A/C trigger wire to "jump" it?

 

Ya I'm using a 12v source. Once I hook it up the clutch locks up and cold air comes blowing out. I'm just about ready to leave the jumper on! I can't find a can of r12 or I would give it a blast.

 

Hard to find r12. Might find something compatible like Freeze12. Or just buy the r134a fittings from Walmart for like $50 and usually includes a can or refrigerant.

 

had the same problem the whole time the wire that goes to the AC comp was torn, check it first it might be cut from somewhere