A/C clutch control $42 Code 7747 ECM
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Joined: Jan 2005
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
A/C clutch control $42 Code 7747 ECM
Anyone know if the A/C clutch can be controlled with a 7747? I was reading on GM ECM and the wiring diagram has a pinout of it, but what was the A/C cutout relay used on. I want more passing power in the summer without switching off the A/C manually!!! Any help would be appreciated.
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Normally, no, the '747 doesn't control the A/C clutch. May be able to get tricky with the EGR calibration and use that output.
The A/C input is used to change the commanded idle speed whenever the A/C clutch is enabled.
RBob.
The A/C input is used to change the commanded idle speed whenever the A/C clutch is enabled.
RBob.
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