65 Rivi blows cold but not ice cold

[65GS4SPD]

I bought the car converted to 134A (wish it was still R12 but oh well) I had a 66 with fantastic COLD AC. My question is: is my 50 year old dryer tired? Is the very good but not excellent AC performance due to the 134A or a used up "dryer" or something else?

I removed the housing from the firewall the door works and seals correctly. The system is charged.

[Bob]

The dryer should have been replace when the system was upgraded, If it is still the original, you definitely want to replace it. There are a many reasons why the system may not be cold, but you should be able to get good results with the 134a. Consider taking it to a a/c tech to have the system checked, dryer replaced and recharged (there is a good chance the system just needs to be topped up)

[telriv]

Very common when going from 12 to 134 is too much 134 is put in. Too much & pressures go crazy & cooling is NOT sufficient.


Tom T.

[firstofeight]

I doubt the 134 is the problem. I do not know the pressure/temp relation of either, but probably close to each other. Was the system flushed out? Probably not if the dryer was not changed.

Had a case where the temp at dash would not get below high 50s. Pressure, as measured at compressor, was spot on. Finally installed a pressure gauge at the evaporator outlet. The pressure there indicated a LARGE pressure drop between there and compressor. We replaced the hose from the evaporator to the compressor . Pressures were now the same and temps at dash dropped to low 49s.

Ben

[65GS4SPD]

Thanks for the replies. I now have a starting point.

Mike