a/c question 93 ssei - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 07-30-2004, 07:56 PM   #1
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Default a/c question 93 ssei

do i have to evacuate my a/c system or can i just top it off with 134?
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Old 07-30-2004, 09:03 PM   #2
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If you're trying to convert from R12, you need to evacuate, change the fittings, and put in new oil. If you just want more R134a in your already converted system, you can just put more in.
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Old 07-30-2004, 09:53 PM   #3
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Do you have the original R-12 in there?
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Old 07-30-2004, 10:59 PM   #4
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Just empty it out then pop in the r134a and oil should do fine. It can go in if there are just remnants of r12 tho.. so if you just have a lil bit in there dont worrie about it.
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