AC Expert Needed
Thread Starter
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Joined: May 2002
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AC Expert Needed
My 93 gets rarely driven, however I do start it and make sure to run the AC compressor for 15-20 minutes even in the winter.
About 2 years ago, the compressor got replaced and it was converted over to the freon. I'm hoping it was a denso unit and not some cheap refurb - it looks stock.
It is now blowing hot air and i can't get the green AC light to come up. When I push it i hear a click under the hood.
I'm thinking its low on freon and that is why the system won't allow the compressor to run.
How can I make sure?
I know you can tap into the AC head unit and get codes, will that tell me anything?
For those who have the newer freon, what should I expect to put a few lbs in it? I know the old stuff was expensive. Maybe it has a leak now somewhere and I'll have to track it down.
About 2 years ago, the compressor got replaced and it was converted over to the freon. I'm hoping it was a denso unit and not some cheap refurb - it looks stock.
It is now blowing hot air and i can't get the green AC light to come up. When I push it i hear a click under the hood.
I'm thinking its low on freon and that is why the system won't allow the compressor to run.
How can I make sure?
I know you can tap into the AC head unit and get codes, will that tell me anything?
For those who have the newer freon, what should I expect to put a few lbs in it? I know the old stuff was expensive. Maybe it has a leak now somewhere and I'll have to track it down.
Last edited by xlr8nflorida; Apr 5, 2009 at 05:45 PM.
Race Director
Joined: May 2006
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From: Phoenix Arizona
The 134 has smaller molecules, so tends to leak especially on the old R12 systems. A can a season is pretty normal. The button should be flashing telling you you have a system error (generally low freon). You can get the stuff at any auto parts store along with a kit to put it in, usually under $20. Sometimes the buttons will stick if the car sits for a while, and you have to keep pushing them to get them to work(try pushing each button up and down the line a couple of times)
Thread Starter
Race Director
Joined: May 2002
Posts: 10,306
Likes: 15
The 134 has smaller molecules, so tends to leak especially on the old R12 systems. A can a season is pretty normal. The button should be flashing telling you you have a system error (generally low freon). You can get the stuff at any auto parts store along with a kit to put it in, usually under $20. Sometimes the buttons will stick if the car sits for a while, and you have to keep pushing them to get them to work(try pushing each button up and down the line a couple of times)
Thread Starter
Race Director
Joined: May 2002
Posts: 10,306
Likes: 15
Got this taken care of today, wound up being the buttons on the control unit. Yesterday, I pushed each button but today I went back and mashed each button like 10 times - now it works like a charm. The buttons probably got stuck because I never use them 
Maybe I should change out the AC control unit with the 3/4 replacements I have in storage LOL
Thanks Fred!
Maybe I should change out the AC control unit with the 3/4 replacements I have in storage LOL
Thanks Fred!
Last edited by xlr8nflorida; Apr 6, 2009 at 04:24 PM.
