Search found 848 matches
- Sat Jan 13, 2024 7:24 am
- Forum: Automotive Air Conditioning Forum
- Topic: 1969 Cadillac Sedan DeVille
- Replies: 18
- Views: 5146
Re: 1969 Cadillac Sedan DeVille
Thanks, all. I will pass on your responses to him; he lives in Prescott, but his two kids live in Phoenix, so he might be amenable to a repair shop here. I'll let him make the decision, don't think I should get involved hands-on other than bypassing the compressor with shorter belt so car is driveab...
- Fri Jan 12, 2024 6:42 am
- Forum: Automotive Air Conditioning Forum
- Topic: 1969 Cadillac Sedan DeVille
- Replies: 18
- Views: 5146
Re: 1969 Cadillac Sedan DeVille
I will pass on the suggestions to the owner. The car is a family "heirloom", in pretty nice condition for its age, and not a show car. Would anyone link good instructions on how to replace a compressor clutch on this, like with any extractor/installer tools? I have pulled AC clutches on ab...
- Thu Jan 11, 2024 7:54 am
- Forum: Automotive Air Conditioning Forum
- Topic: 1969 Cadillac Sedan DeVille
- Replies: 18
- Views: 5146
1969 Cadillac Sedan DeVille
My friend has a 1969 Cadillac Sedan DeVille which has been in his family forever; nothing has been done to the AC (still R-12) in decades. He reports that the AC only cooled "mediocre" in 90F weather last summer, figure some refrigerant loss over those years. However, his immediate issue i...
- Sun Dec 10, 2023 7:04 am
- Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
- Topic: R134a oil
- Replies: 4
- Views: 8995
Re: R134a oil
When I was working in the chemistry lab, I could use infrared spectroscopy (IR, FTIR) to detail in two minutes whether refrigeration oil in a system was PAG or mineral-type oil. Know anyone who works in a chemistry lab???
- Sun Nov 26, 2023 6:58 am
- Forum: Automotive Air Conditioning Forum
- Topic: wont hold vacum but will hold pressure
- Replies: 7
- Views: 7857
Re: wont hold vacum but will hold pressure
How do you know it is holding pressure? My interpretation is that since there was R134a in the system (6.57 pounds ) that he ASSUMES that it's holding pressure. I would think a big leak would even be able to be heard and would not hold 6.57 pounds for long. So I suggested for him to do a vacuum tes...
- Sat Nov 25, 2023 8:01 am
- Forum: Automotive Air Conditioning Forum
- Topic: wont hold vacum but will hold pressure
- Replies: 7
- Views: 7857
Re: wont hold vacum but will hold pressure
The leak could be in your AC system or in your equipment; check out the equipment first for leakage.
- Fri Nov 17, 2023 6:26 am
- Forum: Automotive Air Conditioning Forum
- Topic: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
- Replies: 13
- Views: 10229
Re: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
Typically will not lose oil during a recovery/recharge. Typically will not lose oil with tiny leak over a few years (such leak is normal/expected).
- Tue Nov 14, 2023 6:33 am
- Forum: Automotive Air Conditioning Forum
- Topic: Pulling Vacuum
- Replies: 4
- Views: 6196
Re: Pulling Vacuum
I installed all new components for the AC system on my 73 corvette and pulled a vacuum on the system. After pulling 29" of vacuum I shut off the low and high side valves on the AC manifold gauge set and then shut off the vacuum pump. The system dropped down to just over 15" in about five ...
- Tue Nov 14, 2023 6:31 am
- Forum: Automotive Air Conditioning Forum
- Topic: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
- Replies: 13
- Views: 10229
Re: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
QUESTION: Do you all think I should WAIT for warmer weather before taking my car in to get looked at? Yes. You have some pressure/refrigerant in the system, so moisture air won't get in. It's easier to diagnose in warmer weather. I figured for 52 degrees outside 28psi seemed OK -- but I'm a total r...
- Mon Nov 13, 2023 7:06 am
- Forum: Automotive Air Conditioning Forum
- Topic: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
- Replies: 13
- Views: 10229
Re: Can't figure out why I'm not getting cold air - compressor works and system is charged (I think).
Disclaimer: I'm not an AC professional. But my advice is free, and worth every penny. 52F is pretty low temperature to try any AC diagnosis. But 28psi is pretty low. I'd get a real service gauge kit if you want to continue diagnosing by yourself. And I'd run away from what you purchased if that can ...