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This is usually an indicator that the throttle body needs to be cleaned. This is an easy job if you know anything about throttle body loction. Remember that the Battery must be disconnected first. Remove the plastic resonator on top of the motor. It has the Vortec 4200 on it. Remove the hoses and electrical connections to the throttle body. 4 bolts hold it in place. (10mm?) Once removed you will see that the back side and mating surfaces get incredibly dirty and you can then manually open the butterfly and scrub the dirty parts with an appropriate cleaning solution and an old toothbrush. Not only will it cure the AC problem but it will make your truck idle and accelerate smoothly again.
What else can I help you with?
Why would 92 corolla stall out when i turn on the air condiotioner and what do i need to fix it?
Give the engine some extra fuel and see what happens when you turn on the AC. If there is still a problem then the compressor or AC clutch could be bad. If its ok then the fast idle needs to be looked at to find out why the car does not idle up when the AC is on.
What causes a '93 Civic to idle rough and want to die when the AC is on?
When you turn the ac on it engages the ac clutch which is turned by a fan belt which is turn by the engine. you are making the engine work harder. The idle speed might be set to low or it,s time for a tune up.
When ac turned on 1995 suzuki sidekick idle drops wont idle up turn ac off engine returns to normal idle?
The A/C idle compensator solenoid is not functioning. This should be located next to the carb.
What is an idle motor?
An idle motor controls the idle-like when U turn on the AC,It will raise the RPM's so the engine doesn't stall. Idle motors are used on computer cars & instead of a screw adjustment.
What does a Idle speed control solenoid do?
The idle speed control solenoid controls the idle of the engine when the air conditioning is engaged. Since the ac pump draws down the engine idle the solenoid increase the idle when the ac is on.
What can cause the car to stall when running the ac?
An engine usually has a higher idle speed when the ac is running. If the high speed idle does not operate then the ac will cause the engine to stall.
What causes a 96 Chevy Tracker engine to die at idle when ac is turned on?
probably got a bad IAC motor
Why would your engine Idle fast and slow when you put your air conditioning on in your Toyota Pickup?
The idle compensator speeds up the engine when the ac is turned on to compensate for the additional load on the engine. If the engine is surging when the ac is on and not any other time then the compensator is probably bad. If it surges all the time but gets worse when the ac is on then look for an intake vacuum leak.
Why won't your SUV idle up when you turn the AC on?
If your SUV won't idle up when you turn on the AC, it could be due to a faulty idle air control valve, a malfunctioning AC compressor, or a weak battery struggling to handle the additional load. Additionally, low refrigerant levels or issues with the engine’s idle speed control system may prevent the engine from compensating for the extra demand. It's best to have a mechanic diagnose the issue to identify the exact cause.
Why Car engine shake when AC is on at idle?
The engine idle may be set to low to compensate for the AC compressor starting up. Rev the engine a few times to see if it stops. If it doesn't, there may be a problem with the AC temperature signal or motor mount.
How does the idle speed compensation switch work?
This switch compensates for the rpm that are lost when you turn on the ac in your vehicle. The ac puts an extra load on the engine that this switch then compensates for and puts your rpm back to where they belong.
Why would the AC and turn signals work when the engine is off but not when it is running?
Most likely is a bad ignition switch.
