Gen 1 A/C

[Montynv]

Morning all, I have a question about my A/C. It turns on, gets cold, idle bumps up when compressor turns on but the compressor does not turn off. The only way for me to turn off the A/C is to turn off the engine. I can hear (I think) the expansion valve under the dash when shutting off the engine, It sounds like a blow off sound. Any ideas where to start?

 

[Skyforgefifi]

Relay position stuck in the “on”?




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[Montynv]

Ok, thx. I down loaded the manual but the A/C section is missing. I only have the heater section, can you tell me where the relay is located.

 

[Salonika]

When you restart engine, is the a/c compressor running?
I know the compressor has a clutch.....maybe the clutch has failed in the on position?

 

[Montynv]

When you restart engine, is the a/c compressor running?
I know the compressor has a clutch.....maybe the clutch has failed in the on position?

No, it shuts off when the engine shuts off. If the system is off and I than turn the A/C system you can hear the clutch engage.

 

['round n' back again]

first thing is to check for electrical current at the compressor after disengaging the unit.
no power?
clutch is sticking, which is what I suspect.

power still ?
u have a voltage current problem

the torque of the engine is holding the clutchurch in the engaged position untill u release the torque by shutting down the engine.
just a guess but I'm probably accurate in that.

 

[Montynv]

Resolved, the PO did some goofy wiring, and grounded out the condenser relay to run when blower switch is on. The system works great so far. Thanks for the replys.

 

[chadzeilenga]

Hey MontyNV,
Great to hear you have your GEN1 AC working. What RPM does the idle go up to when it is running?


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[Montynv]

It idles up between 900 -950, it's nice, idles smooth.