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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 07-10-2007, 11:34 AM   #1
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Default A/C Problem

I was trying to charge my A/C system the other day and am now having a problem. It was originally just low so the compressor would kick on and off. After putting some refrigerent in it, the compressor has now stopped kicking in all together. I tried putting a jumper in the plug for the evaperator, switching relays, and I have checked all the fuses. I also scanned it with and Autoxray scanner and there are no codes but when I looked at the real time data it says the A/C is disabled. Any idea what to look for? It'* a 1993 SE. Thank you.
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Old 07-10-2007, 11:59 AM   #2
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What did you recharger your R12 system with?
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Old 07-10-2007, 12:06 PM   #3
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Someone converted it before I bought the car so I used 134a.
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Old 07-10-2007, 12:17 PM   #4
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Did you overcharge to the point that one of the swtiches has disabled it?
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Old 07-10-2007, 12:29 PM   #5
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No, unless my gauge was wrong. I didn't get a chance to put much into it when the compressor stopped so it still should be pretty low. Is there a way to check if its disabled by a switch?
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Old 07-10-2007, 12:32 PM   #6
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A Tech 2 scanner would tell you what the switches are reading. Other than that..I think you could probably test with parameters from the FSM. It probably tells you what the ohm readings for a switch are.
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Old 07-10-2007, 01:12 PM   #7
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If I did overcharge it and released some of the pressure would it start working again or would I have to reset something since it is showing disabled?
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Old 07-10-2007, 01:17 PM   #8
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This is a 93SE. A tech 2 scanner won't work. He needs a Tech1 to do that.
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Old 07-10-2007, 03:35 PM   #9
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Sorry...thought Tech 2 was backwards compatible. Odd that GM wouldn't do that.
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