A/C prob 96 Grand Caravan

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mnewchu@bellsouth.net - 15 Jan 2005 16:43 GMT

I have a 96 Grand Caravan and the compressor works intermittently. I have
checked the R-134a pressures and it seems ok. This problem seems to be in
the control circuit for the clutch since if I cycle the compressor switch in
the cab it will often come on for a time or even work till the car is turned
off. I don't have a wiring diagram to troubleshoot the circuit and was
wondering if some of the experienced people who post here was aware of a
common problem with this.

TIA,
Mike

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nitro - 15 Jan 2005 22:45 GMT

A cycling compressor clutch usually means the refrigerent charge is
low,however Chryslers are known for having defective themister
switch,located in the high pressure ac line.It has three wires going to
it.Chrysler offers an updated replacement part.System needs to be scaned
for proper diagnosis.

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mnewchu@bellsouth.net - 16 Jan 2005 02:57 GMT

Thanks for your help, I'll check into that.

>A cycling compressor clutch usually means the refrigerent charge is
> low,however Chryslers are known for having defective themister
> switch,located in the high pressure ac line.It has three wires going to
> it.Chrysler offers an updated replacement part.System needs to be scaned
> for proper diagnosis.

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maxpower - 16 Jan 2005 12:09 GMT

Check the a/c charge with a set of gauges, sounds to me as if it is low on
R134

> I have a 96 Grand Caravan and the compressor works intermittently. I have
> checked the R-134a pressures and it seems ok. This problem seems to be in
[quoted text clipped - 6 lines]
> TIA,
> Mike

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mic canic - 16 Jan 2005 15:01 GMT

the system is able to record fault codes and that should be the first step
before any parts are bought
they are stored in the bcm and the hvac module and sometimes the pcm

> I have a 96 Grand Caravan and the compressor works intermittently. I have
> checked the R-134a pressures and it seems ok. This problem seems to be in
[quoted text clipped - 6 lines]
> TIA,
> Mike

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