Bad dryer it was...now I have to locate a small leak...suspect that it is the original evaporator leaking in the case...fluorescent dye is gathering around the evap inlet edge of the case ...many thanks for the help!

Dryer on order...will install in a few days.

Line entering the dryer is hot as one would expect...the dryer body is slightly cool near its bottom...the line leaving the dryer is MUCH cooler (at least 25 degrees cooler) and this same temperature extends all of the way to the TXV.

Filled system with 4 pounds of R12...line from dryer is cold...dryer fittings look like they are different sizes so cannot be put in backwards...verified that end of dryer stamped "IN" is coming from the condenser...sight glass looks foamy...I am thinking restricted dryer?

There it is. The TXV is passing just enough liquid to make the evaporator inlet cold... If the suction line to the POA is not cold & dripping, the evaporator is starving for refrigerant. The POA is holding 29psi, but I suspect the compressor side of the POA is in vacuum. Time to recover & b...

Verified that full airflow is moving across the evaporator... bohica2xo, when you say is the suction side cold...specifically where on the suction side are you referring?...I have cold at the expansion valve and into the bottom of the evaporator...100 degrees at the discharge elbow of the evaporator...

Replaced the water flow valve with a known good one and used flat jawed vise grip pliers to clamp each water line shut...I am running this car with the rear half backed out of an enclosed garage, so the vent air supply is probably picking up the engine heat...I guess my next step should be to remove...

Physically blocked hot water to the heater core and within 5 minutes of running the AC, I had vent temps of 85 degrees and still rising...so the heater core wasn't the issue...I am now to the point that I hate the most, randomly changing out components with new until I find the issue...I cannot thin...

100 degrees is indeed the vent temperature...I have the vacuum source removed from the heater control valve, but I suppose the valve could be faulty...fan clutch is good and tight and moves a lot of air...I may have better high side pressures if I had fully charged it with refrigerant (stopped at 3....

PLEASE help and/or offer suggestions...I am trying to get the AC back operating on my catalina...(factory spec is 4.12 pounds of R12)..Here is what I have going on...installed a rebuilt compressor, flushed the evaporator, replaced the dryer, replaced the expansion valve...proceeded to pull a deep va...