1998 Durango 4X4 5.2L Magnum ..... I purchased this used a couple months ago ... Went to use the AC and noticed no cool air ... Realized I was not even hearing the compressor clutch kick in ... Today I checked it out ... Hooking up clutch directly to power does kick it on ... Voltmeter on wire plug, to the clutch, never shows any voltage ... I took out the AC relay to switch it with another ... When I put it back the clutch kicked in for a second or 2 and turned right off ... I'm thinking it's some kind of safety switch or sensor turning off the power because something is not right? Any ideas?

Dave from Maryland!

 

Check or have checked the freon pressure. Nothing works if the pressure is low. Do a search, there is a lot of info here already.

 

I was thinking maybe the Freon was low .... Would that make the clutch shut off as soon as it kicks in? ... Any idea what the pressure should be?

 

https://dodgeforum.com/forum/1st-gen...solutions.html

 

Are your A/C fuses in the JUNCTION BLOCK good? Fuses 1 and 7.


Also, your Ignition Switch has to be turned to RUN for the clutch to be turned on normally.

 

I'd check the a/c pressures with a manifold gauge set (connects to both the high and the low side) to see what's going on. It doesn't have to be an electrical issue it could just be low on refrigerant.

 

worse case...Clutch is shorted out.