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Compressor clutch coil is bad. Possible reasons?

1voyager1 on Thu June 20, 2013 4:25 PM User is offline

Year: 1998
Make: Dodge
Model: Dakota
Engine Size: 5.2L
Refrigerant Type: R-134a

I live in Alaska.
AC has never been a big deal for me.
I am now planning on a move to warmer climes.
AC would be a nice thing to have.
At least until I become acclimated to the warmer temps.

So, my horn was not working.
I decided to fix it.
I found that the fuse in the PCD has blown.
The fuse also is for the AC compressor clutch coil.
I have confirmed that the clutch coil is blowing the fuse.

So my questions are:
What are the likely causes for the clutch coil going bad?
What else should I checkout before assuming that simply replacing the coil [clutch] will fix the problem?

1998 Dakota Club Cab
4x4; 5.2L; Auto

NickD on Thu June 20, 2013 7:38 PM User is offline

Low clutch voltage or excessive gap can cause clutch slippage, get super hot and over heats the coil burning the varnish insulation causing shorts.

Or just a bad coil, just random wind these things, no layering or varnish insulation, normal vibration can cause interwinding shorts.

mk378 on Fri June 21, 2013 10:06 AM User is offline

...because it's part of a Dodge?

Since the A/C hasn't worked in a while you could put a gauge on to check if there is still any pressure in the lines. A leak may have developed in the meantime.

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