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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-24-2005, 01:34 PM   #1
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what is the ideal psi for low side and ideal psi for hish side in our cars?
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Old 06-24-2005, 01:37 PM   #2
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In the air conditioning system?

If so, someone with a factory service manual can tell you what GM says they should be....
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Old 06-25-2005, 01:28 AM   #3
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You may want to ask the professionals on this web site, http://www.autoacforum.com/categories.cfm?catid=2. There are alot of helpful people on this site. I had alot of questions about vacuuming the A/C system and they were all answered.

Good luck,
Sellncars
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Old 06-25-2005, 04:26 AM   #4
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high above 50psi
high 135-300psi, higher == colder output

low comp turn on, 41-51psi
low comp turn off 20-28psi


all line connections are 18 ft. lbs.
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