Why does my AC only blow cold when driving?
Most likely your refrigerant has a small leak which has lead to a condition where your compressor can only properly function while the engine is running at higher than idle speed.
Is AC only for cold air in car?
No, it does what any A/C does, cools and dehumidifies air. Outside>Cold side of A/C>Blend door (decides whether to heat the air or not)>inside (your face most likely). On a hot day the cool air from the AC is sent direct to the cabin, but on a cooler day where dehumidification is required (eg.
Why does the AC blow cold air while driving?
The AC is now cold but only when the car is sitting idle. When driving it blows warm air. Any idea what could be the problem? Any help is greatly appreciated? Could be several things… Faulty pressure sensor. Suggest you hook up a AC manifold gauge set and see exactly what the system is doing.
Why does my a / C blow cold then warm while sitting still?
The change from cool to hot and vice versa is very gradual, and the temp out of the vent even while sitting still in not as cold as I would expect. I’ll check the coolant reservoir as you suggest.
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.
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.
The AC is now cold but only when the car is sitting idle. When driving it blows warm air. Any idea what could be the problem? Any help is greatly appreciated? Could be several things… Faulty pressure sensor. Suggest you hook up a AC manifold gauge set and see exactly what the system is doing.
The change from cool to hot and vice versa is very gradual, and the temp out of the vent even while sitting still in not as cold as I would expect. I’ll check the coolant reservoir as you suggest.
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.
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.