A/C problem

Discussion in 'Peterbilt Forum' started by Peterbiltswede, Aug 17, 2022.

  1. Peterbiltswede

    Peterbiltswede Bobtail Member

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    On my 1989 379 the ac is not working right
    On idle it blows 50° from the outlet and the compressor not cycling
    Engine fan is working
    I put 5 pounds of freon to it
    Can it still be low on freon
    It use to blow about 30° from the outlets before I had to replace some orings and hose
     
    Peterbiltswede, Aug 17, 2022
    #1
  2. 062

    062 Road Train Member

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    5lbs is probably to much. I have a 94 and it calls for 3.63lbs.
     
    062, Aug 17, 2022
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    Roger McG Thanks this.
  3. Peterbiltswede

    Peterbiltswede Bobtail Member

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    according to peterbilt by vin number it takes 5lbs
     
    Peterbiltswede, Aug 18, 2022
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  4. Roger McG

    Roger McG Light Load Member

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    R 134a in my 91 and 94 are 3 lbs for a day cab 3.5 with a sleeper give or take
     
    Roger McG, Aug 18, 2022
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