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#2552704 - 02/29/12 06:24 PM Re: r12freon questions [Re: Dakota1820]
JimPghPA Online   content


Registered: 08/22/09
Posts: 2887
Loc: Pittsburgh,PA U.S.A.
Wait until it is 95 F or more before you expect it to not cycle.
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#2552707 - 02/29/12 06:27 PM Re: r12freon questions [Re: Dakota1820]
wtd Offline


Registered: 06/25/02
Posts: 1335
Loc: southwest Mo.
The last time I bought R12 was this summer from a fellow forum member on one of the sites I go to. It was a 54 lb bottle with about 50lbs left. I also bought a r12 can off of craigslist awhile back.

I got my 609 certificate about five years ago which enables me to buy R12 and I had to use it when I bought some R12 on Ebay to recharge my 92 Cavalier.

Check your system by pressures to see if it is low. Continuous cycling usually does mean the system is low but you need to check pressures to be sure.

If possible I would also keep your truck R12 if at all possible if it does need to be recharged or repaired because you won't get the same performance with R134a.

Wayne
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2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
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#2552709 - 02/29/12 06:34 PM Re: r12freon questions [Re: eagle23]
Chris142 Online   content


Registered: 06/05/03
Posts: 12330
Loc: apple valley, ca

Originally Posted By: chevyboy14
Isn't there a can of freon made that can be bought by a regular Joe and is compatible with r12?
No! Theres no refrigerant that can be added to a system that already contains R12.

The low pressure cycling switch cuts the compressor off @ around 25psi to prevent the evaporator from freezing up. On a cool day it may cycle quite often, on a hot day it may never cycle off.

Also the fan speed has much to do with cycling. Low fan = more cycling and high fan speed = less cycling.

Originally Posted By: eagle23
Last I heard, you don't need a license to buy it anymore.

You heard wrong. Nothing has changed and you still need a cert to buy it (legally).
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#2552727 - 02/29/12 06:51 PM Re: r12freon questions [Re: Dakota1820]
toneydoc Offline


Registered: 12/16/11
Posts: 1206
Loc: War Eagle
Leave it alone until it is not COLD. Then worry about it. spank
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#2552771 - 02/29/12 07:29 PM Re: r12freon questions [Re: Dakota1820]
Jarlaxle Offline


Registered: 02/02/12
Posts: 4783
Loc: Gone
^
That. It works, don't *bleep* with it!
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#2552783 - 02/29/12 07:37 PM Re: r12freon questions [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
How do I check the pressure?
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2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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#2552800 - 02/29/12 07:49 PM Re: r12freon questions [Re: Dakota1820]
nazareth Offline


Registered: 02/15/09
Posts: 178
Loc: arizona
mp39

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#2552812 - 02/29/12 08:00 PM Re: r12freon questions [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
Mp39???
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2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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#2552817 - 02/29/12 08:04 PM Re: r12freon questions [Re: Dakota1820]
oppirs Offline


Registered: 03/23/09
Posts: 149
Loc: chicagoland
Originally Posted By: chevyboy14
How do I check the pressure?


Use gauges like these, mine from the 80's



Your fine for now. Wait till it get in the 90's. Like others said don't screw w/it. Better know A/C, frostbite can happen


Edited by oppirs (02/29/12 08:06 PM)
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#2552835 - 02/29/12 08:18 PM Re: r12freon questions [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
Where would I get the guages though. I noticed the line gets cold but when clutch kicks on it gets even colder and when you shut it off it makes the equalizing pressure noise. My Saturn doesn't cycle when it turns on its on. The truck is every 7-10 seconds . I may end up converting all the r12 stuff seems hard to get a hand on
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1998 Saturn sl2 -mobil super 5000 5w30


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#2552848 - 02/29/12 08:28 PM Re: r12freon questions [Re: Dakota1820]
oppirs Offline


Registered: 03/23/09
Posts: 149
Loc: chicagoland
Is it still cold in the cab? It needs to cycle to not freeze up!
_________________________
2002 GMC Sierra 4x4 Z71
1989 Olds Cutlass Supreme SL
1986 HD FLHTC
1975 MGB

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#2552850 - 02/29/12 08:32 PM Re: r12freon questions [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
Yes it is still cold. Why would it cycle every few seconds and the Saturn didn't do it in 3 minutes? I imagine the system is low. That's what I'm thinking. If I convert it I will do it myself. Will I need to drain the oil and put in new? Or just replace refrigerant?
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2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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#2552859 - 02/29/12 08:43 PM Re: r12freon questions [Re: Dakota1820]
Chris142 Online   content


Registered: 06/05/03
Posts: 12330
Loc: apple valley, ca
Your saturn has a variable displacement compressor . It won't cycle like your truck with its r4 compressor does. Completly different compressor designs.
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02 Wrangler qsgb 5w30
87 F250 Diesel Mystic 15w50
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Polaris Trailblazer delo 5w40

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#2552862 - 02/29/12 08:45 PM Re: r12freon questions [Re: Dakota1820]
oppirs Offline


Registered: 03/23/09
Posts: 149
Loc: chicagoland
Your over thinking it. My '89 Olds uses schaving (sp) extra gasses routed. Never cycles, always on. Don't use the modern for your older truck.

As too R12 I bought before the ban. Only used 15lb in 20 years. 3 R12 users. Wish I never had a garage sale of my R12 cans.. Only got $7 a piece back in 1998.
_________________________
2002 GMC Sierra 4x4 Z71
1989 Olds Cutlass Supreme SL
1986 HD FLHTC
1975 MGB

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#2552870 - 02/29/12 08:51 PM Re: r12freon questions [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
So its normal for it to cycle every 7-12 seconds? In 50 -60 degree weather.
_________________________
2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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