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Old 06-23-2018, 03:17 PM   #3
70GMCer
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Join Date: Apr 2005
Location: Joppa, Maryland
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Re: AC Pressure Switch ?

Quote:
Originally Posted by hatzie View Post
If it's a working LPCO switch you can adjust the cut-in pressure for R134a... if you need to.

Hopefully, there's a HPCO switch in the system now as well.
With a 134 conversion, would the low be set at 30psi cut out? Also, I didn't think there was a high pressure switch for this year. If I install one, would I wire it in series with the low switch?
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