Overheating/rising temp since A/C Charge

["James La Londe" <deloreandmcxii@xxxx>]

I Just got my A/C charged with R12, and the mechanic said the was overheating when they tested the AC.. I chalked it up to the fact that they tested it without driving the car... and it would've overheating just sitting there for 30 minutes anyways (with or without AC)

But that was only partially true. On the freeway or consistantly driving 35 + mph the temp is fine and AC is cold. When in stop and go traffic though, or (of course) when at a stand still, the water temp rises steadily to the red zone. And then hovers there for a bit, and then seemed to drop drastically back to slightly under normal. Sometimes the water temp will stay at normal even in stop-and-go traffic, and other times it will do as i described above. And if the temp is high and I start going faster for some distance doesn't immediatly effect the water temp (as it has in the past when the temp rose is trafic.. it used to drop back to normal once the fans kicked on, or when i started moving again).

May sound stupid, but is possible to have reversed the polarity on the fans? Should the fans be blowing through the radiator or sucking in from the radiator (pulling more air through? thanks for any input!!!!!!!!

-James La Londe
1981 Delorean DMC-12 vin#001697
LicPlate DMC XII
1998 Kawasaki Vulcan 800
1992 Ford Probe GT