Why does my air conditioner not work at idle?
If its not working at idle RPM of around 600–800 but works at engine cruising RPM of 1000 to 1500 or more, then you are probably a little low on refrigerant. But since its a closed system that means you probably have a slow leak, if it used to work fine.
Why does my car aircon get warm when I’m idling?
Car aircon uses compressor to create cold gas which then cools the air. The compressor is driven by engine revolution through a belt. Thus the faster the engine revs, the faster the compressor pumps. At idle the car revs very slowly therefore compressor works less hence warmer air. Usually it means you are low on refrigerant, just a bit.
When does the air conditioner need to be running?
Both fans should be running even if the car air-conditioning is turned on during a hot summer day. Just a small note to remember, whenever the car is moving at freeway speeds, Freon is pumped throughout the air conditioning system more easily by the compressor compared to when the car is sitting idle.
When does your car air conditioner start blowing cold air?
Just a small note to remember, whenever the car is moving at freeway speeds, Freon is pumped throughout the air conditioning system more easily by the compressor compared to when the car is sitting idle. There is a noticeable air flow increase in the condenser whenever the car is running at speeds in excess of 55 mph.
What to do when your car AC blows warm at idle?
GM and others use either a three-relay set up to run the two fans at low speed for normal driving and high speed when the AC is on or the low speed can adequately cool the radiator. Other carmakers use a solid-state speed relay that varies the speed of the fans based on engine cooling and AC needs.
What happens when you top off an AC system in a car?
Most DIYers think they can just top off their car AC system with no downside. WRONG! Any time an AC system leaks refrigerant out, it also lets outside air in. Air in a car AC system decreases the system’s cooling ability because it takes up space in the condenser, yet it doesn’t condense.
Both fans should be running even if the car air-conditioning is turned on during a hot summer day. Just a small note to remember, whenever the car is moving at freeway speeds, Freon is pumped throughout the air conditioning system more easily by the compressor compared to when the car is sitting idle.
What happens if your car AC is charged but not cold?
If your AC is charged but not cold, read this. Over time, most car AC systems develop leaks and lose a small amount of refrigerant. This happens most often in the winter when the seals and tubes contract.