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| AC - How to tell R12 or R134 (Page 2/2) |
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Raydar
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AUG 10, 05:19 PM
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FWIW... In 88, all V6 compressors were HR6. Earlier V6 (and some 4 cylinders) used DA6.
As the story goes, the HR6 is fine with R134. The DA6, not so much.
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sanderson231
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AUG 10, 06:02 PM
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If the car has been sitting but the A/C hasn't been opened up, I would not replace the compressor. I have converted an 86 with the DA6 compressor and it worked. On paper R-12 hoses are R-134a permeable but experience has shown that R-12 hoses that have been permeated with mineral oil hold quite well in R-134a service. The same may be true with the compressor seals. Other than some extra labor there is not much to lose by trying the existing compressor. Capacity wise any of the Fiero compressors are fine with R-134a ------------------
formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged
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runninwideopen
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SEP 12, 11:09 AM
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I bought an R12 gage set off of eBay, but the high-side hose is the same fitting as the low-side, instead of being the smaller thread.
When I look up adapters, I just get the R12 threaded to R134 quick connect adapters, and those specify the same threads for both low/high. I can't seem to find anything to hook up to the R12 high port.
What am I missing?
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Larryinkc
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SEP 12, 02:40 PM
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runninwideopen
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SEP 12, 02:52 PM
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Claudioalonso
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SEP 13, 08:25 AM
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| quote | Originally posted by runninwideopen:
Hi all,
Still restoring my 88GT. The car sat for 13 years in a barn. I got the blower working. The AC compressor does seem like it kicks on when first pushing the button, and it even seemed like it started to get cold, but then gave up. Hoping it just needs charged.
How can I tell if this car has been converted to R134 or not? My old Fiero had a nice R134 sticker on it. This one has nothing. I'd like to be more certain than just assume it's R12 since it doesn't have an R134 sticker. |
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Post a picture of the ports on the a/c lines and I’ll tell you what you have……. R12 they look like a tire valve and 134A is a whole different animal……
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