No power at compressor with A/C turned on [Archive] - GrandAmGT.com Forum

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jduce
05-04-2009, 09:41 AM
When I turn on the A/C, nothing engages. I checked for voltage at the fans and the compressor and I get nothing.

I've checked fuses and relays they all appear fine.

any ideas?

chris_gt_74
05-04-2009, 12:25 PM
I don't know about the voltage, but are you sure it has a full refrigerant charge? They are designed to not work if there is none in it.

jduce
05-04-2009, 02:17 PM
It's charged. It's been charged since last year and has held.

I guess the next thing to do is trace the compressor wire back to a source? I mean I imagine it's not getting power because of a safety switch being open

I'm going to have to look for an electrical schematic and start checking for power

chris_gt_74
05-04-2009, 06:07 PM
Have you tried to crudely test the clutch on the compressor yet by hot wiring it for a second to see if it engages? I would start with the a/c knob/switch in the dash first.