[mopar56]

hi my sons Dakota's a/c clutch has stopped working, first he noticed an increase in fuel economy then noticed that he couldn't here the clutch engauge anymore, I did a few simple checks, the fuses are all fine, I swapped the clutch relay with the same one used in the horn, but no difference, there are two connections going to the a/c compressor, I unplugged and checked them both and they seemed fine although one had been repaired before in the wire just before the connector with an electrical butt connector but it seemed fine, the compressor pulley spins fine with no growling noises but the clutch wont engauge in either a/c mode or defrost as it did before, any ideas or common problems or maybe some one knows what wires going to the compressor should have voltage, I have a Haynes manual but havn't gotton that far yet as I have a couple other projects I am still deep in, Thanks

 

[mopar56]

ok thanks guys, those are both good places to start, Dak4x4, the resistance test on the wires you mentioned is that between the two wires or each wire to ground at the clutch?, as for the relay that was one of the first things I tried, Bob, I thought when the system was low on freon,(because I did think about that), that the clutch would engauge madly back and forth?

 

[mopar56]

well it seems there is no voltage at the connector, I swapped the relay with the horn one and no power still, Bob, I cant find the connector at the firewall although there is a wire or two that goes in a loom to somewhere in behind the washer bottle on the firewall, could that be it?

 

[mopar56]

I of course measured the voltage on the half going back in the harness, not the pigtail on the clutch, and yes I measured for resistance across the pigtail going to the clutch, nothing, all zero

 

[mopar56]

ok according to my manual it says to jumper the harness at the accumulator where the pressure switch is, I did this and still no clutch, it then mentions testing voltage at the relay box at terminal 30 and 86 I have not done this yet, its getting dark and my garage is full of projects so back at it later this week, any more ideas?

 

[mopar56]

ok thanks

 

[mopar56]

hey Bob the whether up here is getting warm, how about where you are? did yo get a chance to check that ohms reading yet or are you still shoveling?, lol, thanks

 

[mopar56]

yep I know what thats like I am still finishing the trans swap on my sons truck in the garage with parts delays this thing has been apart since January, some times its hard to find time to squeek the small jobs in, take your time but I appreciate the help.

 

[mopar56]

ok thanks that gives me a base line I will check it against my sons tonight after he gets home from work or tomorrow