RJS
Well-Known Member
Please read post no not factory except for evaporator I added an underhood kit.If you are running the factory style compressor and R-134 freon, there is a EPR valve in the compressor, it was used to control the flow of the freon, it is not compatible with R-134. You have to convert the system to be a cycling type, like all new cars since R-134 was introduced. You may know this information. I have done a couple underhood retrofits and the companies did not explain this at all. If you are using the factory stuff under the dash, you will have to install a switch on the low side under the hood. And remove the EPR valve. The 165 high and 15 low side pressures are both really low with R-134, should be more like 250 and 38 lbs.
Ron
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