Quote:
Originally Posted by Jorn
Check the electric fans. My AC (300SE) had the same symptoms, crappy or no AC in the city and decent on the highway. The fans were not coming on, the wires under the fuse box were fried. Fixed it and cold AC now.
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Working now after adding some refrigerant the other day, pressure was below cut-in on the red pressure switch I assume. Fans cycle now.
Ambient 76F today, muggy, AC was doing jack crap driving around town at 30-40mph, maybe a 12-15F drop over ambient. I'll try to stick gauges on it next week. Am I good using a generic temp/pressure chart like this?
R-134a System Pressure Chart | AC Pro
I don't think I've ever had a car with a factory r134 AC system lol...