Why is my Nissan QX56 clutch not working?
It’s an ’05 QX56. There are a number of things that could be the cause of the clutch turning off; the front air control, the BCM, the ECM or the IPDM. Since you wired up the clutch directly we know the clutch is OK. High temp and/or pressure (over 398 PSI) will turn off the clutch, as well as throttle position.
What happens if the clutch is not engaged?
If it judges compressor can be turned ON, it sends compressor ON signal to IPDM E/R, via CAN communication line. Upon receipt of compressor ON signal from ECM, IPDM E/R turns air conditioner relay ON to operate compressor. Kind of what I feared, a bunch of sensors that the computer uses to determine if the clutch can be engaged or not…
What to do if your air conditioner clutch does not engage?
If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. So start your diagnosis by determining if the compressor clutch works. Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch.
Why is the clutch not engaged on my gas compressor?
But if the system is low on refrigerant, the clutch will never engage. Some DIYers then hotwire the low pressure switch to force the compressor clutch to engage while they recharge. BAD MOVE. At that point you’re running the compressor with little to no oil.
It’s an ’05 QX56. There are a number of things that could be the cause of the clutch turning off; the front air control, the BCM, the ECM or the IPDM. Since you wired up the clutch directly we know the clutch is OK. High temp and/or pressure (over 398 PSI) will turn off the clutch, as well as throttle position.
What happens when the AC clutch does not work?
An automobile can have numerous serious problems and a dysfunctional AC compressor clutch is one of them. When this component does not work properly, the engine does not get the cold air flow – leading to some major complications. Knowing how to manually engage AC compressor clutch will help you skip a visit to the mechanic.
Why is the pulley not engaging the clutch?
Turn the air conditioning controls to MAX AC and start the engine. Then look at the front of the compressor clutch. Both the pulley and the clutch should be spinning. That means the clutch has properly engaged with the pulley. If only the pulley is turning, but the clutch disc isn’t, there’s a problem somewhere in the system.
But if the system is low on refrigerant, the clutch will never engage. Some DIYers then hotwire the low pressure switch to force the compressor clutch to engage while they recharge. BAD MOVE. At that point you’re running the compressor with little to no oil.
Why is my AC not blowing cool air?
No matter how high you set that regulator, it does not seem to work. Well, there are many reasons behind your AC, not blowing cool air. From the leaking refrigerant to the bad compressor, even a tiny fault in the HVAC system can make you face difficulty with your AC.
Why is my a / C not working in my car?
The A/C works sometimes, then other times it just stops blowing cold. When this happens the clutch is not engaged. Sometimes restarting the car gets it to kick back on, or even letting it sit a while. Resetting the computer will also let it come back on. At some point it always shuts itself off and may/may not come back on until it feels like it.