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08-23-2008, 09:01 PM
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#1
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Join Date: Aug 2007
Location: Piscataway, N.J.
Posts: 1,729
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RECHARGE MY A/C-1991 FORMULA-LOW PRESSURE INLET?
I want to check the A/C pressure with a gauge that looks like a TIRE pressure gauge. It says to use the low pressure inlet side on the acumulator. On my car is that the valve that sticks out by ITSELF and is larger than the one that is attached to a line coming out of it. I looked in my Factory Service Manual, but it does not show a clear picture of which fitting I should attach it to.
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1991 FORMULA 350-GONE BUT NOT FORGOTTEN
1 of 1,197 with L98 Option/13.79@100 mph
1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a HURST 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit!
SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph
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08-23-2008, 09:07 PM
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#2
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,151
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The high & lo valves should be different size.
IMO, if you have to ask you should not touch your AC system.
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Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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08-23-2008, 10:42 PM
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#3
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12 Second Club
Join Date: Aug 2004
Location: Oradell
Posts: 8,368
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the guage only fits on one.... so test that one 
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86 Camaro
88 Camaro
95 Impala SS
97 Trans Am WS6
98 Blazer ZR2
00 Corvette
04 CTS-V
07 Sublime Charger Daytona
10 Tahoe SSV
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08-23-2008, 11:33 PM
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#4
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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Has it been converted to R-134A with new fittings???
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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08-24-2008, 09:56 AM
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#5
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Join Date: Aug 2007
Location: Piscataway, N.J.
Posts: 1,729
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Quote:
Originally Posted by deadtrend1
Has it been converted to R-134A with new fittings???
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It still has the R12 original fittings. This piece looks like a large aluminum can with a fitting facing the motor(nothing attached to it)and is the larger of the fittings. The other is attached to a line that is coming out of the can and has a smaller fitting on it.
__________________
1991 FORMULA 350-GONE BUT NOT FORGOTTEN
1 of 1,197 with L98 Option/13.79@100 mph
1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a HURST 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit!
SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph
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08-24-2008, 01:40 PM
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#6
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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small = low
large = high
like bonzo said, if you don't know a/c you don't wanna mess with it.
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08-24-2008, 07:24 PM
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#7
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NJFBOA Supporting Sponsor
Join Date: Feb 2006
Location: HULMEVILLE, PA
Posts: 2,023
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Quote:
Originally Posted by sweetbmxrider
small = low
large = high
like bonzo said, if you don't know a/c you don't wanna mess with it.
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you have it backwards
Quote:
Originally Posted by sweetbmxrider
like bonzo said, if you don't know a/c you don't wanna mess with it.
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JSSPEEDANDCUSTOM.COM
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08-24-2008, 07:50 PM
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#8
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Join Date: Aug 2007
Location: Piscataway, N.J.
Posts: 1,729
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Quote:
Originally Posted by JSPERFORMANCE
you have it backwards
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Thanks for the info. If I want to check the pressure with the tire pressure LOOKING tool, that is the one I want. Also is this the fitting I use to attach the line from a 12 oz. can of R12 that I have? They say to use the LOW PRESSURE inlet and I want to be 100% sure. I can't find a good picture of the accumulator with those fittings and lines coming out of it. If anybody could supply a picture(I stink at getting pictures on here)it would be a great help. 
__________________
1991 FORMULA 350-GONE BUT NOT FORGOTTEN
1 of 1,197 with L98 Option/13.79@100 mph
1994 25th ANNIVERSARY TRANS AM GT -1 of ONLY 2,000 made/ Only 128 made with a HURST 6-Speed Manual and 91 with T-Tops and Compact Disc/ K & N Filtercharger/Magnaflow Performance Muffler/Air Foil- ORIGINAL MINT Arctic White Ultra Rare SURVIVOR. DAYTONA 500 PACE CAR Decal Kit!
SOLD: 1989 Turbo T/A in 1991 it ran 12:18@115 mph
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08-24-2008, 08:44 PM
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#9
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by JSPERFORMANCE
you have it backwards
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damn it. thats why i don't eff with them!
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08-25-2008, 12:21 AM
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#10
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NJFBOA Supporting Sponsor
Join Date: Feb 2006
Location: HULMEVILLE, PA
Posts: 2,023
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Quote:
Originally Posted by BonzoHansen
IMO, if you have to ask you should not touch your AC system.
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