This Porsche 964 Carrera 4 owner had continuing problems with his air conditioning system. He had been filling the system with freon every summer and was looking to have the problem finally resolved properly. We performed a vacuum test on his system but the leak was too small to detect. Similar results were obtained when we tried to find the leak with dye in the freon. We had recently purchased a freon leak detector that can “smell” freon. We were able to isolate the leak the the AC evaporator.
We removed the gas tank, the firewall and the heating and air-conditioning blower unit. We took out the old corroded evaporator, check that all the blower fans were in good working order, tested the new evaporator for leaks in the system and then reassembled it all. We then recharged the system with r134 freon and tested it for leaks one more time.
The customer is now driving around with icy cold AC and is read for those 100 degree Denver days that will be coming soon.
