A/C and secondary cooling fan help needed
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Joined: Jul 2003
Posts: 1,236
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From: KY
Car: 87IROC, 740iBMW, 328iBMW, 86GMC
Engine: 5.7, 4.4LV8, 2.8, 6.0
Transmission: Manuals & Auto's
Axle/Gears: 3.27, 3.42
A/C and secondary cooling fan help needed
I need some help and advice with my 87 IROC, please! Here goes..
Can the A/C pressure switch be tested across the male terminals with an ohm meter to determine if the switch is good or bad? Should I be able to see a closed circuit?
If the A/C pressure switch is bad, should the secondary radiator fan turn on when the ignition key is turned to the on position but the motor not started?
Should the dark green wire back to the powertrain control module test open or should it test closed circuit. If it tests open, could there be a problem with the pwr control module?
The A/C compressor does not activate when the control panel switch is changed.
Any ideas? Thanks
Can the A/C pressure switch be tested across the male terminals with an ohm meter to determine if the switch is good or bad? Should I be able to see a closed circuit?
If the A/C pressure switch is bad, should the secondary radiator fan turn on when the ignition key is turned to the on position but the motor not started?
Should the dark green wire back to the powertrain control module test open or should it test closed circuit. If it tests open, could there be a problem with the pwr control module?
The A/C compressor does not activate when the control panel switch is changed.
Any ideas? Thanks
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