87 300E MERCEDES BENZ A/C NOT COOLING ON HIGH

Jun 06, 2005 2 Replies

TH CAR HAS NEW COMPRESSOR,EVAPORATOR,EXPENSION VALVE AND DRYER.WHEN SETTING ARE ON LOW,A/C BLOWS COLD AND HIGH PRESURE IS 250,LOW SITE IS 35.AUX FAN ON ,AT IDLE. WHEN INSIDE BLOWER IS SET ON HIGH,THE HIGH PRESURE GOES UP TO 350,LOW SITE



50 AND NO COOLING

Sounds like your aux fan is not running at all... are you sure about aux fan running? There are two speeds... so it sould hit high speed when high pressure is that high.

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