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Thread: adding freon to the ac

  1. #1
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    May 2002
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    Default adding freon to the ac

    where is the port to add freon? anyone have any pics?
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    [Lift] - 4" Full Traction
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  2. #2
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    Jun 2002
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    Gilbert, AZ
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    Default

    On which model? On the ZJ, the low pressure valve is in the rear passenger side of the engine bay, just above the coolant overflow tank.
    '94 ZJ Ltd 5.2, CarSound Cat/MagnaFlow Muffler/2.5" pipe, K&N FIPK, Mopar Performance ECU, Kolak Ignition, 2" Teraflex BB, upcountry springs, ProComp MX6 shocks, OME SD40, Bridgestone Dueler A/T Revo 31/10.5/15, Hayden Severe Duty Fan Clutch, Don-A-Vee Spare Tire Carrier (this rig does all the dirty work)
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  3. #3
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    Default

    sorry i forgot that i dont have my new car on my sig just got it yesterday...

    It is a 98 grand limited.
    -----
    [Lift] - 4" Full Traction
    [Gears] - 5.13
    [Axle Shafts] - Alloy Shafts
    [Tires] - Trxus MT (37x12.50R17LT)
    [Rims] - Cragar Soft 8 17x8, 4.5" BS
    [Drive Shafts] - JE Reel 1350 Heavy Duty Drive Shafts
    [Front Bumper] - Shrockworks stuby
    [Rear Bumper] - LOD w/jerry cans w/trail rack
    [Rails] - Shrockworks
    [Diff Covers] - SOLID
    [Floor Liners] - Husky
    [Winch] - Ramsey 9500
    [OBA] - ARB Portable Air
    -----

  4. #4
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    Jan 2004
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    Southern California
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    129

    Icon316 Adding A/C coolant

    Like Unmikie (THE Unmikie to you!) said: the low pressure port is right above the ENGINE coolant overflow tank. Fear not: in the first place, the high pressure port is ON the compressor (not even close to the low) and they're two different sizes.

    Find an all-in-one coolant kit - the parts manager will know what you mean (if not, go to another store!) - so you can monitor the pressure as you add coolant ... not check the pressure, take the gauge off; hook up the coolant canister, add a little; take the coolant canister off; repeat steps 1, 2 and 3 ad nauseum.

    Check the pressure with the engine warmed up and idling, and the A/C on high (i.e., LOWEST temperature, highest fan setting).

    The gauge should read 35 psi max when the compressor cycles on; take it easy ... if the pressure is too low to cool properly, 1 second with the canister valve open will put TOO MUCH coolant (i.e., TOO MUCH psi) so add a little at a time.

  5. #5
    Wave Dangit! dbwj99's Avatar
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    Jun 2003
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    Memphis
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    Cans are 12 oz, not 16 oz and out of that 12oz, you only will get 6 or 7 oz.
    Current: 09 JK Unlimited, Red Rock, Power, hardtop, 17" wheels needing some real tires but can't afford them!
    Former: 99 WJ, QTII, 4.7L, BFG AT's 245/75 16's, 2"BB
    Former: 89 YJ, I-6, BFG AT's 32's, 2" body lift

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