Why does RPM fluctuate when AC is on?
When the engine is put under a load by the AC system, the car’s computer automatically attempts to compensate for that by adjusting the idle. If there is carbon buildup within any part of the system, including the idle air control valve, throttle body, or possibly even the EGR valve, it can cause surging.
Why does my air conditioner get cold while driving?
One of the most common causes of the symptom you’re describing is when you have a bad or failing AC high pressure hose. The high pressure hose is designed to increase and decrease AC pressure during different driving conditions, since the AC drive belt will increase in speed as the vehicle accelerates.
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.
Why does my car turn off the AC at normal cruising rpm?
If your TPS is not not sensing the position of your throttle properly, it will definately turn off your AC at normal cruising RPM. My car does that when I am trying to floor the paddle but in normal mood, it keeps cooling even at 120+ km/hr.
Why does my AC get warm when I’m in motion?
If your AC is cooling as usual when the vehicle is in motion then you have fan or thermostat problem. If your AC is “warm” than usual, or it doesn’t provide enough cooling at your usual AC setting, then you can point the problem to the low refrigerant charge. I hope this answer will help you.
When does the AC get cold in a car?
AC is cold only when the engine is revving above certain rpm. When at a stop, the air is warm…but if I put it into neutral and rev the engine to, let’s say, 2000+ rpm, AC gets colder…or when Im driving, obviously. I know everyone is gonna say something about the condensor fan but would it be the fan given above circumstances? Buying Guides Deals
Why is my AC blowing hot and cold at the same time?
It was blowing cold at all times. Now this afternoon the temp is back to 90 and pressure is reading 120 and blowing hot at idle again until rpms are increased then pressure is going down to around 40 and starts blowing cold again. when the pressure is high like that on the low side, your compressor is likely not engaged.
When does the AC work in a Honda CRV?
AC Works only when engine is revving high – Maintenance/Repairs – Car Talk Community 1998 Honda CRV Replaced the AC compressor. AC is cold only when the engine is revving above certain rpm. When at a stop, the air is warm…but if I put it into neutral and rev the engine to, let’s say, 2000+ rpm, AC ge…
Why does the AC not work when the engine is idle?
The system is probably low on refrigerant. But not low enough to prevent the low pressure switch from preventing the compressor from operating. If you want to try to fix this yourself, go purchase a DYI AC recharge kit. Once the recharging kit is connected, start the engine and raise the idle speed to 2,000 RPM’s and turn the AC on.