Automotive Air Conditioning Information Forum

I didn't see the site glass,I did look for one.



I have my CFC UNIVERSAL license so I can buy what I need.

See above about knowing correct refrigerant level in a system. Even with R-12 and a sight glass , adding correct amount of R-12 can be tricky.



Why exactly did you bother to post ...

Disclaimer - I'm not an AC professional.

That stated, I do still have a vehicle using R-12, and I live in Arizona.


I bought tonight a 1981 Corvette with 4600 original miles.

1. Being blunt, if you just bought a pristine 1981 Corvette, you can afford to buy a REAL R-12 service gauge set. If ...

I didn't see the site glass,I did look for one. It might be on the accumulator which is buried behind the WS washer container. How would I check the pressure switch to know if it's good/bad? And also if the system requires 30 lbs of Freon is there a minimum of Freon for the system to work?

That should read I bought.

I tonight a 1981 Corvette with 4600 original miles. The A/C system still has pressure,surprised me after 44 years. I do all my own maintenance on my cars but never really needed to look into an A/C system until now. I bought a set of gauges,found the pressure down a bit so I added 14 ozs of Freon ...

Corvettes aren't known for effective air conditioning mainly because of mediocre condensing. That said, you can check the sight glass yourself for the presence of any bubbles with the A/C system engaged and the engine set to about 1,800 RPM. If you see any, chances are that the system is low on ...

I've got a 1991 ZR-1 Corvette that I'd like to top off the A/C system. While it blows cold I feel it could do a little better,I'd like to check the pressure in the system but haven't got a clue. I work on my own cars,even done front end alignments but have never messed with the A/C system but now ...