2012 CHU A/C

[1965]

My A/C works to good; it does not cycle; not  close to house where I can put gauges on it; buy seems like it's doing good except won't cycle; it will freeze up if not running fan on high; the folks where I bought truck said they had just put new controller in it;

thought it might be something that was common problem

thanks for any help

[Tbear]

your ac system should have a coil in front of or behind your radiator could it be clogged which would prevent air passing though it which can cause the system to freeze. I see this in house systems from time to time and when we clean the coils the system starts to work with out freezing up. Maybe this will help.

[1965]

Condenser looks clean; I was thinking if it was stopped up it wouldn't cool & high side would get high enough to shut down; I know enough about a/c to be dangerous; cabin filter is clean & has good air blowing through vents when evaporater doesn't freeze; I think the problem is compressor not cycling but don't know what causes that

thanks