Here is the latest puzzle in the life of a 92 400e. Air cond works great til car is hot. ..then the ac comp cycles frequently and is not sufficient to cool the car. High side gets near 300lbs and the low side around 50 or so. When the car is cold the preassures are about 225 high side 38-45 low at idle. ambient temps around 98 so this is still normal. compressor has 186 k on it but makes no noise at all and makes cold air on cold start up...Ideas?
Thanks for any help with our puzzle.


P.S. The comp stays running at fast idle. when i let it return to normal it cycles at high side 225 low side at 60. New expansion valve, receiver dryer.

Brian