Why does the AC blow warm air when idling?
I have a 2001 Chevy Tahoe with the 5.3L engine. I have an odd issue with the AC and was hoping an expert can shed some light on the problem. When the truck is driving, the AC is ice cold. However, when I am idling for a couple of minutes, the AC will start to blow warmer air. Almost as if the ac is turned off and only the blower is working.
What happens when your a / C unit is idle?
When you are at idle, you are not producing as much pressure as when you are accelerating. So if your freon levels are low, then when you idle you very well may not get any cold air through the vent. As A/C runs like a giant circle of pressure, you need to make sure all the levels are sustained at all times.
Why is the AC cold in my Chevy Tahoe?
From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. I have a 2001 Chevy Tahoe with the 5.3L engine. I have an odd issue with the AC and was hoping an expert can shed some light on the problem. When the truck is driving, the AC is ice cold.
Why does the AC blow warm at idle?
Since the AC compressor is driven by the engine, it doesn’t pump as much refrigerant when you’re at a stop or driving slowly. If the system is low on refrigerant, it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs. Get your system refrigerant level checked.
Why does my car air conditioner blow cold air?
My air conditioning in my 2012 Kia Optima EX GDI non turbo runs fine while driving at higher speeds but at a stop light, stuck in traffic at low speeds it only blows warm or hot air. Only one fan on the car. What could be the problem
Why does my air conditioner turn off while driving?
The air conditioning compressor will turn off at the slightest rise of heat due to excessive HEAD PRESSURE – however the engine will not show any signs of overheating. 99% of the time this problem is caused by insufficient air flow into the engine bay while vehicle is in slow moving traffic or at stop with engine and a/c on.
What to do when your car AC is running?
Check the radiator fans to make sure at least one fan turns one when the AC is switched on. However, some cars operate both fans at low speed while driving and switch into high speed mode when the AC is running. So get tricked into thinking your fans are ok simply because they’re running.
When driving at slower speeds or idling, the AC blows warm air. I brought car to two VW dealerships to have their service department diagnose the problem. When running diagnostic on AC system, it states that their is voltage to the compressor but the compressor does not turn on. The freon level is good and system has no leaks.
Is it normal for a car heater to blow cold air?
It blows cold air when at a stop light or at low speeds. It blows warm air when RPM’s get around 2K or higher. I have checked the coolant level and is normal. The temp stays normal in not cold or hot. I also had the 100,000 mile flush and fill with BG back in August of 2013 and had no problems this last winter with heating.
When does a Toyota Tacoma blow cold air?
Discussion in ‘ 2nd Gen. Tacomas (2005-2015) ‘ started by tacomajaybee, Nov 11, 2014 . I have a 2005 Toyota Tacoma 4.0L Double Cab. It blows cold air when at a stop light or at low speeds. It blows warm air when RPM’s get around 2K or higher.
Why does my Honda CRV turn warm at idle?
I agree with MrShift@Edmunds, same thing happened to a friend of mine with a Honda CR-V. Hers would cool fine while driving around and then turn warm at idle. I replaced both engine cooling fans (they were not operating even when I connected them directly to battery power) and that solved the problem.
When does the AC blow warm air or cold air?
The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. When driving at slower speeds or idling, the AC blows warm air. I brought car to two VW dealerships to have their service department diagnose the problem.
Why does the AC blow hot at idle?
On this car the compressor is functioning. The high pressure readings are only occuring when the outside temp is 90 or higher. Now that the temperature is down in the mid 80’s the pressure as went back down a bit and the AC is working better at idle. I know the pressure changes with temperature change but I’ve never seen this drastic of a change.
When does the AC work better at idle?
The high pressure readings are only occuring when the outside temp is 90 or higher. Now that the temperature is down in the mid 80’s the pressure as went back down a bit and the AC is working better at idle. I know the pressure changes with temperature change but I’ve never seen this drastic of a change. You ever get a solution?
It blows cold air when at a stop light or at low speeds. It blows warm air when RPM’s get around 2K or higher. I have checked the coolant level and is normal. The temp stays normal in not cold or hot. I also had the 100,000 mile flush and fill with BG back in August of 2013 and had no problems this last winter with heating.