Ac question

[performancelaw]

Trying to figure out why my air is blowing hot at idle but cold when its going down the road. 1800 rpms and up its fine. Any thoughts ?

 

[93cc7.3]

do you by chance have eletric fans or you could be low on freon

 

[Brianedwardss]

Those symptoms are commonly an airflow problem, such as a dirty condenser or a fan clutch that isn't working. Basically once you're at speed, the ram air is providing the airflow.

Question, can you rev it to 1800-2000 rpms while stopped and make it get cold, or do you have to be moving..?

 

[f-two-fiddy]

You should definately be able to HEAR the fan on when accelerating from Idle. I know I can hear mine

 

[performancelaw]

If I rev it I can feel it getting cooler. But not as cold as going down the road. Any ideas as to what to do.

 

[f-two-fiddy]

try spraying off the condensor

 

[ford390gashog]

Have you check the high and low side pressure? The symptoms you describe are close to what happens when an empty system is recharged without pulling a proper vacuum.

 

[performancelaw]

No I haven't done that. Maybe I need to take it to someone who know ac systems and see what they come up with ......

 

[DragRag]

I do a/c all the time, sounds to me like your condenser is dirty, wash it out well. It is a a fact that your a/c will not work as good at idle as it will when you are moving. Physics, and boils law come into play here.