I finally converted my A/C, how cold should it be? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-02-2005, 08:38 PM   #1
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Default I finally converted my A/C, how cold should it be?

Well i'm EXTREMELY happy today. I finally got around to converting my A/C that hasn't worked since i got the car. Went to auto zone and bought the last kit i saw, came with new fittings, caps, retrofit oil, and hose. I put in the oil, then filled 'er up with ~ 2.5 lbs of R-134a. I was crossing my fingers the whole time because it took a while to blow cold air. But she finally kicked in and BAM nice and cool. Now i'm just wondering how cool your cars are getting after you (or anyone) converted your systems. Thanks!
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Old 07-02-2005, 10:10 PM   #2
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Converted? Like complete conversion? Just as cold as regular r12. After the car is up to running temp, the A/C is freezing cold. But my A/C is prestine


-justin
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Old 07-02-2005, 11:17 PM   #3
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You'll probably notice with 134 the rpms need to be over 1000 to really cool great. But once you have a little rpm you'll get just about as cold.
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Old 07-02-2005, 11:37 PM   #4
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Well i don't know how cold it was before, because it never worked. But i've felt some that are colder that'* why i was asking. But i'm definately not complaining.
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Old 07-02-2005, 11:39 PM   #5
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with a thermo in the vents mine is 32 degrees on high
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Old 07-02-2005, 11:45 PM   #6
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At 90F outside according to my Harbor Freight IR thermometer the vent was reading 42-46F the one time I had it along. So far we have had a very cool summer in Orlando, mostly highs in the upper 80s and occasionally 90F. Can actually work in the back garage in the afternoon.
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Old 07-03-2005, 01:26 AM   #7
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Well i know my vents aren't getting anywhere near 32 degrees. Maybe 50 or so. But it still feels better than 90 degree air coming over my face doin 75 or 80.
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Old 07-03-2005, 12:14 PM   #8
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I believe the rule of thumb since it passes outside air over the evap...is 20 degrees cooler.
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Old 07-03-2005, 03:01 PM   #9
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Well i got excited too soon. I walked by the front of my car when it was really quiet and i could hear a small hissing noise, so i put my ear next to the grille and sure enough "psssshhhhh". DAMNIT. Guess i have a bad condenser. Oh well i can enjoy it for a little while.
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Old 07-03-2005, 03:38 PM   #10
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Is it bad to still use the AC when you have a leak like that?

you could cause more damage to the car with a leak like that. Doesn't leaking refridgerant come out like -3,000* F? What if that sprays on your rad, while the car is running? Couldn't that like do a lot of damage?


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