how to diagnose a/c compressor clutch
#1
how to diagnose a/c compressor clutch
I'm having no luck trying to search this topic so my apology if it has been addressed before. I have a 1999 Ram 1500 5.2. The a/c started blowing fuses the other day and I suspect that it is clutch related. So how do I confirm this? I have searched the internet all weekend trying to find some schematics- man do I long for the good old days.
What I found so far is:
Unable to figure out where the hot goes once it leaves the PDC.
With only two wires connected to the compressor, one shows a ground and nothing on the other with a ohm meter- no ground, no hot.
When I connect VOM to the leads at the compressor, I get a 0.0 reading indicating a compete circuit. Should this not show some resistance through the load?
I have not been able to find any stats anywhere on what should be what then all of sudden I have realized, DUH, come here and ask!!!
So, I'm asking.
Thanks ahead to all.
Richard
What I found so far is:
Unable to figure out where the hot goes once it leaves the PDC.
With only two wires connected to the compressor, one shows a ground and nothing on the other with a ohm meter- no ground, no hot.
When I connect VOM to the leads at the compressor, I get a 0.0 reading indicating a compete circuit. Should this not show some resistance through the load?
I have not been able to find any stats anywhere on what should be what then all of sudden I have realized, DUH, come here and ask!!!
So, I'm asking.
Thanks ahead to all.
Richard
#2
I believe you are correct about the clutch. This may help, https://dodgeforum.com/forum/2nd-gen...e-manuals.html
#3
#4
It's 5 ohms and mine turned out to be the coil like heyyou said. I had the same symptoms as you, and not to threadjack but I'm 99.99% sure that's the problem, my heat doesn't work because my a/c clutch still runs when I turn that little *** all the way to the red and the a/c clutch stays engaged, any quick fixes for this? My heater core doesn't seem to come on either. But the heat does work a little.
#6
It's 5 ohms and mine turned out to be the coil like heyyou said. I had the same symptoms as you, and not to threadjack but I'm 99.99% sure that's the problem, my heat doesn't work because my a/c clutch still runs when I turn that little *** all the way to the red and the a/c clutch stays engaged, any quick fixes for this? My heater core doesn't seem to come on either. But the heat does work a little.
Works for me, just links to the Service Manual thread in the FAQ/DIY section of the 2nd gen forums though.
#7
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#9
+1.... And here is the link to what HeyYou is talking about.
https://dodgeforum.com/forum/2nd-gen...-door-fix.html
https://dodgeforum.com/forum/2nd-gen...-door-fix.html
#10
But to the op, I would definitely check the coil and replace it because I went three weeks with no a/c in south florida (95+ everyday all day and night) and I finally gave up and took it to a mechanic to do it and I found out it was only a coil. He replaced that and the whole clutch (it was all seized up) for $100, really good guy. I wish I would have figured out much earlier about the coil, ESP since my gf wasn't happy with my cheap self....