I have a 55 Belair that has an under dash unit. When I start the car the gages low and high read what they should for the ambient temperature of 80 deg. 175 /45. After running for about 20 minutes the copressor starts to short cycle about every 30 seconds or so. The gages then read low side 30 high side 175 this is when the copressor starts back up. The evaporator unit is set at high fan, and the thermostat is at max cool. The unit is pulling down to 47 - 50 degrees. Any ideas on what to look for ? ps 134a unit.
Thanks Norm
Thanks Norm
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