Re-installing AC - Chevy Impala SS Forum
 
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post #1 of 3 (permalink) Old 06-03-2016, 08:54 AM Thread Starter
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Re-installing AC

Car came with a bad compressor so when I had the PCM tuned by PCMforless about a year ago I said 'No AC' on the tuner sheet.
Swapping in a new one now.
My question is will the clutch cycle on if I don't change anything with the tune?
Got a guy coming over to recharge the system and now wondering if it's going to turn on?
Is there still power being supplied to the circuit?
I do have a spare pcm from a stock 9c1.

Last edited by JackFish; 06-03-2016 at 08:57 AM.
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post #2 of 3 (permalink) Old 06-03-2016, 09:54 AM
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AC control is in the PCM. Heater control is the input and clutch relay is the output.(short version)

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post #3 of 3 (permalink) Old 06-03-2016, 10:35 AM Thread Starter
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So if the tuner "disables" AC there will be no power sent to the clutch?
I don't know to what extent the system is disabled by the tune?
I realize the pcm won't use any parameters to account for presence of the ac. But will the ac still run at idle enough to charge the system?
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