Engine Size: 6 Cyl
Refrigerant Type: R-134
Country of Origin: United States
I am trying to charge my a/c system, the compressor kicks in, but the refrigerant is not going into the system. I have tried accelerating the car a little while the hoses are on, but nothing gets in the system. I had a 94 cherooke before and it also took me several attempts before I coul charge it. Is there a specific procedure I have to follow? Thanks
What are the pressure readings before/after the compressor engages?
I'm guessing with a '91 and R134 that it was retrofit... could be simply bad conversion fittings not depressing the old schrader valves.
Many of the older Jeeps had isolation valves on the compressor. If you have those you have to take the valve stem cap off and turn the valve stem partway (clockwise I think) to open the service port.
Measure both high and low side pressures before charging anything.
A 1991 will have a R12 system. If it has not been properly converted yet do not just put R134a in on top of the R12.
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