Can't figure out low side ac recharge

Asked by William Apr 03, 2017 at 10:14 AM about the 1991 Cadillac Seville FWD

Question type: Maintenance & Repair

I want to recharge ac but there is some type of
wires connection to low side. Do I just unplug and
unscrew it? Car has been converted already

3 Answers
188,355

Paul answered 7 years ago

That is the pressure control, there is another fitting that you can charge from, find the compressor and follow that line till you find the charging port !

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30,465

Tom answered 7 years ago

I always thought the low side had the larger pipe and the high side had a pipe about 3/4 size ,,, no? Does 137A have the same size schrader fitting as the old refrigerant had?

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