A/C Problems, Compressor Clutch Not Kicking On
08-04-2017, 05:56 PM
#1
A/C Problems, Compressor Clutch Not Kicking On
Hello, me
I've been dealing with this for a month now and it's becoming frustrating.
My a/c stopped working one day and was blowing out hot air. Thought it needed a recharge, shop #1 told me the compressor was out and it was getting power. Charged me for diagnostic
Went and bought a manufactured compressor, installed it and took it to shop #2. Told me the new compressor was bad and charged me for diagnostic. I bought a brand new compressor and took it back to shop #2. They vacuum it and refilled it. Both fans work. They disconnected the pressure switch and it does work. Clutch still does not kick on. I have switch the relays around and checked the fuses. No luck. The shop today did remove the relay and gave it 12v at the fuse box and the clutch did kick on. They said the problem goes back to the ECM and they need me to leave my car with them for a few hours. It's my only car.
I don't have time to take it back to them until monday. My research has shown no one else with ECM / AC compressor issues. The system is currently properly charged. Any suggestions?
I've been dealing with this for a month now and it's becoming frustrating.
My a/c stopped working one day and was blowing out hot air. Thought it needed a recharge, shop #1 told me the compressor was out and it was getting power. Charged me for diagnostic
Went and bought a manufactured compressor, installed it and took it to shop #2. Told me the new compressor was bad and charged me for diagnostic. I bought a brand new compressor and took it back to shop #2. They vacuum it and refilled it. Both fans work. They disconnected the pressure switch and it does work. Clutch still does not kick on. I have switch the relays around and checked the fuses. No luck. The shop today did remove the relay and gave it 12v at the fuse box and the clutch did kick on. They said the problem goes back to the ECM and they need me to leave my car with them for a few hours. It's my only car.
I don't have time to take it back to them until monday. My research has shown no one else with ECM / AC compressor issues. The system is currently properly charged. Any suggestions?
Last edited by FromaDB2toanAP1; 08-04-2017 at 05:58 PM.
08-05-2017, 10:02 AM
#2
You sure it's not the switch on the dryer? As far as I know the ECU doesn't control the A/C compressor.
08-05-2017, 01:26 PM
#5
Yeah the compressor circulates the oil and refrigerant. So the problem is the magnetic clutch is not responding? Maybe it's something from the dash A/C switch.
08-07-2017, 06:59 AM
#6
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08-11-2017, 08:41 PM
#8
Tested ac wire than goes to ac, it gets 12volts instead of being grounded. Pretty sure it's the ecu, might have to change out a resistor. If I change the ecu, how do I get it reprogrammed or what not?
