Georgia Fiero Club Forum

All Things Fiero => Tech Tips, Tech Questions => Topic started by: Donster on July 18, 2011, 06:28:25 pm

Title: A/C problems 2.5L
Post by: Donster on July 18, 2011, 06:28:25 pm

Could a too weak alternator cause the A/C clutch not to engage?
Just replaced the compressor, but clutch won't engage
Checked fuses, all good

Anybody have an idea?

Or should I just go ahead and replace the compressor again? Anybody have one for sale?

\D

Title: Re: A/C problems 2.5L
Post by: Crash 86GT on July 18, 2011, 07:48:32 pm

Check your low pressure switch. Or jump it over by hooking up a short wire in the connector.

Title: Re: A/C problems 2.5L
Post by: Fierofool on July 18, 2011, 08:14:42 pm

I'm not sure about the 4 cylinder compressors, but the V6's have a small resistor on the clutch.  If that got damaged, the compressor clutch won't work.  I don't think the alternator would have any effect as long as the battery has power enough to run the engine. 

Title: Re: A/C problems 2.5L
Post by: TopNotch on July 18, 2011, 10:08:59 pm

If your compressor is a DA6/HR6, there will be a pressure switch on the accumulator. Remove the connector from it and jumper the connector. If it is a V5, there will be two pressure switches on the back of the compressor. Remove both and jumper the connectors with cut paper clips.
Start the car and then turn the AC on. If your compressor doesn't engage, it could be a clutch problem.

Title: Re: A/C problems 2.5L
Post by: Donster on July 18, 2011, 10:27:23 pm

Is it very difficult to just replace the clutch on a compressor, or would it be more feasible to just replace the entire compressor?

\D

Title: Re: A/C problems 2.5L
Post by: Donster on July 19, 2011, 06:57:07 am

Does anyone know if the compressor from a V6 can be used for an Iron Duke?

\D

Title: Re: A/C problems 2.5L
Post by: TopNotch on July 19, 2011, 08:40:07 am

Not on later years. Not sure about 86 and below.

Title: Re: A/C problems 2.5L
Post by: Donster on July 19, 2011, 01:06:35 pm

Quote from: TopNotch on July 18, 2011, 10:08:59 pm

If your compressor is a DA6/HR6, there will be a pressure switch on the accumulator. Remove the connector from it and jumper the connector. If it is a V5, there will be two pressure switches on the back of the compressor. Remove both and jumper the connectors with cut paper clips.
Start the car and then turn the AC on. If your compressor doesn't engage, it could be a clutch problem.

Worked like a charm (HR6), pressure switch was bad (inexpensive, replaced)

And ALAS! The 84 Duke has cold air again!!

Thanks guys

\D