I thought that there was refrigerant loss, but the pressures tell me that is not the case.
This has me baffled. I have spent hours looking online for a solution to no avail.
Here are the details.
1984 Mercedes 300TD
Worked fine the first two years after system rebuild.
R-12 refrigerant
TXV
ACDelco compressor
Ambient 80 F RH is unknown guessing 50%
Idle 32 PSI low side 250 PSI High side
Revved up 20 PSI low side 260 PSI high side
Vent temp 62 F at idle a little cooler when driving
Low side gauge jumps about 50 PSI immediately after shut down.
Slow to equalize pressure 75 PSI difference after two hours
Auxiliary fan on
There was oil at the low pressure port when gauge was removed.
Good temp drop across the condenser
Little temp change across the evaporator.
There is some condensation dripping to the ground
Return line is not cold
Heater core lines cool
Thanks for your help.
This has me baffled. I have spent hours looking online for a solution to no avail.
Here are the details.
1984 Mercedes 300TD
Worked fine the first two years after system rebuild.
R-12 refrigerant
TXV
ACDelco compressor
Ambient 80 F RH is unknown guessing 50%
Idle 32 PSI low side 250 PSI High side
Revved up 20 PSI low side 260 PSI high side
Vent temp 62 F at idle a little cooler when driving
Low side gauge jumps about 50 PSI immediately after shut down.
Slow to equalize pressure 75 PSI difference after two hours
Auxiliary fan on
There was oil at the low pressure port when gauge was removed.
Good temp drop across the condenser
Little temp change across the evaporator.
There is some condensation dripping to the ground
Return line is not cold
Heater core lines cool
Thanks for your help.
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