Just one of the main leads to of a auto stalling with the A/C on is a seized compressor. If there is certainly screeching, smoking cigarettes, stalling and the air blows warm out of the vents whenever the AC is turned on it is a good guess that the compressor has locked up. If there is just a belt squealing but the vehicle won’t stall and the AC cools, more than most likely the belt or the tensioner is worn. The most probable induce of a auto not idling superior sufficient and sometimes stalling with the A/C turned on with no any of the other challenges pointed out can be an IAC (Idle Air Command) motor.
*Maintain in brain the compressor could be scorching to the touch when checking.
How to look at for a locked up or seized compressor
- Test to flip the clutch plate (on the conclusion of the cpompressor).
- Utilizing a socket on the nut that holds the clutch plate on – see if it can be turned.
- Glance for symptoms of the clutch plate more than-heating discoloration.
If the belt is loose it might be mainly because of a worn serpentine belt tensioner, but this by itself will not trigger the motor vehicle to stall. A sticking IAC motor can cause the car to stall. An IAC motor typically will get carbon establish up that can lead to sticking. If the idle isn’t going to go up when the AC is turned on the motor can stall. Several times if this is the dilemma, the IAC motor can be taken out from the throttle entire body and cleaned with a brush and gas injector spray and then re-put in.