I have a few of the (small) DIY cans of R-12 left over and was thinking I would try to get the A/C working. I bought the car almost two years ago, and the A/C has never worked. Anyhow, the Drier/Accumulator has two LP connectors (one is the old Schrader valve and a quick-connect valve) The quick-connect valve looks like a R-134a connection. No stickers on the compressor, or under the decklid or under the hood. Is there any "easy" way to tell if it has been converted?

- Jimmy

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1987 coupe; Blue; 2.5L; 5-spd
1987 Firebird Formula; Blue; 5L; 5-spd

It's a" good bet", If the "adapter" is on there, someone put 134 in it ! you'll have to flush the system and put the correct oil back in, then the r12.
If it was me, I'd pull a vacuum on it, see if it leaks, then go from there.

The connectors are different for the R 12, and R 134 also. Assuming your can of R12 came with the tube and connector on it, it will not fit on the new R134 connector.

Jim