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The most likely answer is that the refrigerant in the AC system has slowly leaked out and can no longer work at low speeds.
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∙ 16y ago
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What causes AC to blow hot air when in idle at the traffic light?
You probably have a low refrigerant level.
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 causes Altima stalls at idle with the ac running?
When the ac is running the idle should be raised to compensate for the extra load. If the idle isn't rising then the car will cut off.
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.
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.
Why would a car idle slowly while starting on a hot day?
You probably have your AC on. This draws more current from the alternator. You can have a loose alternator belt, or a bad alternator. Try it with AC off. (if this is what you're doing)..Tom
Why does your ac on your 1993 infiniti j30 blow hot?
Idle the car with the AC running. Open the hood and look at the AC compressor- is the compressor engaged? (the front of the compressor (inside the belt) should be spinning. If not, then have the AC system recharged. If it is turning, then you've got the door to a duct stuck inside the unit.
Where do you set the idle on a 1991 dodge cummins pick up?
You will want an idle speed between 750 and 900 rpm with the ac on and in gear (if auto).You will want an idle speed between 750 and 900 rpm with the ac on and in gear (if auto).
Ac blows hot when accelerate but cold when idle?
You either have a bad, cracked or loose vacuum line or you have a broken a/c - heater control door that closes when you are accelerating......
Why does the ac work when parked but when you drive your car it blows hot then cold and idle goes up and down?
Many ac systems use engine vacuum to operate the ac controls. You may have a cracked or disconnected vacuum line that feeds the HVAC system. Check the vacuum lines under the hood, that is where they would most likely be damaged. A vacuum leak would also be the cause of the erratic idle.
Where is the fuse for the idle stop solenoid on 1974 corvette I don't have power to this wire to the solenoid?
I believe that kicks on when the AC is turned on to raise the idle to compensate for the AC compressor load.
When AC is on causes the car to go why is this?
Idle compenstorVehicles hve an idle copensator that speeds up the engine when the ac is turned on to ring the rpm back up to the proper idle speed, if yours is too fast then t needs to be adjsted.
