AC warm when driveing....cold at idle

[jas98]

Hi i have a VS commodore. Ive noticed while driving the ac is rather warm....feels like its trying to get cool but cant.....but if i am stationary or at the loghys etc it get nice and cool like it shoul and compressor cycles like it should.

I have herd the clutch gap may need adjusting? Could this be the cause?

 

[rambunctious]

I would be looking at a faulty/open heater tap and maybe a vacuum problem considering the tap and air con controls are vacuum operated.
I have never heard of adjusting the compressor clutch.

 

[CCCMikey]

Might be worth looking if the end of the compressor is actually rotating when warm. Mine only runs now if I poke it with a stick. By rotating the head of the compressor while the car's running, the clutch kicks in on mine and then tends to work for the rest of the drive. Yours might have developed the same problem.

 

[jeepster]

I would be looking at a faulty/open heater tap and maybe a vacuum problem considering the tap and air con controls are vacuum operated.
I have never heard of adjusting the compressor clutch.

Feel the brass heater pipe on the driver side under the dash. If it's hot, your heater valve isn't closing.

 

[Immortality]

I too think it's a heater tap/vacuum issue.