Depending on the year, make and model check the cooling fan/fans and on some models check the fan clutch...........
Your car can only create cold air if the engine is running to make the coolant work correctly. If your car is idle, your engine is still hot but your engine isn't running so the air you are receiving is actually air heated by the engine.
750rpm 850rpm w/Air Condition on
An idle air control valve (iac) allows the flow of air into the intake to be mixed with fuel while the vehicle is at an idle. when you open the throttle the valve does not need to work because the air is coming from the air box hence the name idle air control
An idle air control valve controls the engine idle revolutions by opening/closing to let more/less air into the throttle body (carburetor)-the car computer reads and controls the valve.
Your car needs a tune up or need a new engine. The air condition puts load on your engine and if it stalls then it needs a tune up.
When the car is at idle, the air conditioner works just as hard as when the car is moving. When the car moves, the engine gets very hot. so the air conditioning works better when your at idle because it doesn't have to cool the heat from the engine.
mechanical compensation for idle air flow to match a predesignated parmeter
air condition
mine does that aswell, its normal to do that it will run below 1000rpm etc
idle air control sensor adjust and meters how much fresh air is let into the engine at idle speed to maintain a preset RPM
Rephrase, Idle air control, idle circuit carburetor or
9 x out 0f ten you can clean it and it will work just fine!