A/C Works when I am driving, the faster i drive the colder it blows (to normal extent). RPM?s have nothing to do with it. when I am stuck in traffic, or even around town, it will overheat the car and not blow cold. the system is fully charged, so I dont know whats up with it, any suggestions?
Very likely you have an engine cooling fan problem. They do wear out (fan motor bearings). Often, one fan motor goes bad, locks up, and blows one of the fuses that runs both fans (there's a hi-speed fuse and a lo-speed fuse). One or both fans not operating would explain all symptoms that you describe.
To help you diagnose this, it will help you to know that the two engine cooling fans are wired to run together (i.e., never would only one run and not the other unless there is a problem). With the hood open and engine running, the fans should be coming on (cycling). If neither or only one comnes on, then you will have confirmed what I suspect.
The fan fuses are in the power distribution center (front driver's side of engine compartment) - labeled "RAD FAN HI" and "RAD FAN HI/LO". You might check those - replace if blown and see if either or both fans run, but be prepared for it to blow again if it was blown (because of worn out fan motor).
Get whatever the problem is fixed soon - you don't want to damage your engine (head gasket, etc.). Which engine do you have?
There are also fan relays, but I would start by looking at the fan motors and their fuses. Post back with what you find.
Bill Putney (To reply by e-mail, replace the last letter of the alphabet in my address with the letter 'x')
Glenn Beasley Chrysler Tech
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.