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AC high and low side pressures

Discussion in '1st Gen. Tacomas (1995-2004)' started by Running Board Man, Apr 8, 2020.

  1. Apr 8, 2020 at 8:50 PM
    #1
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    Where should these be at i have a small leak in my 3rd gen 4 runner and need to refill it periodicly

    Im going to try a stop leak additive since thats what my tacoma had that blew ice cold ac for longer than i was alive without a single recharge

    The FSM I found online simply states to add refrigerant till the sight glass in the reciever drier doesnt have bubbles

    which it doesnt but, that doesnt seem very scientific, while it gets nice and cold now it still takes a short drive to get there wheras my tacoma had ice cold ac in less than a minute every time
     
  2. Apr 9, 2020 at 2:45 AM
    #2
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    Depending on outside temperatures. But 220-250psi on the high side and 30-45psi on low side is average.
     
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  3. Apr 9, 2020 at 2:46 AM
    #3
    Wyoming09

    Wyoming09 Well-Known Member

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    Are you measuring at the duct diffuser or just by feel ?
     
  4. Apr 9, 2020 at 7:53 AM
    #4
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    Yes... but on my tacoma with my inferred thermometer it read 22 degrees

    I have the same thermometer still so if it was inaccurate than it will be inaccurate now
     
  5. Apr 9, 2020 at 10:00 AM
    #5
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    What temps are you reading now?
     
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  6. Apr 9, 2020 at 12:30 PM
    #6
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    Low 50s high 40s
     
  7. Apr 9, 2020 at 12:47 PM
    #7
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    Does that 4runner have the rear a/c option. That's actual good temps.
     
  8. Apr 9, 2020 at 12:54 PM
    #8
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    No rear ac, was my tacoma just unusually good?
     
  9. Apr 9, 2020 at 2:02 PM
    #9
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    Have you checked pressures?
     
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  10. Apr 9, 2020 at 4:25 PM
    #10
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    I only did what the fsm said and added till the sight glass was bubble free than returned the gauge set as i already had it for a week (never got around to it) and didnt want to own it

    Ill leave and borrow it in the parking lot
     
  11. Apr 9, 2020 at 5:15 PM
    #11
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    20200409_190823.jpg

    Went back added a bit more and shes nice and cold
     
  12. Apr 9, 2020 at 5:24 PM
    #12
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    Not as knuckle numbingly cold as the tacoma but it works
     
  13. Apr 10, 2020 at 12:30 AM
    #13
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    Is that at an idle? Might have a touch to much in it.
     
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  14. Apr 10, 2020 at 3:29 AM
    #14
    Running Board Man

    Running Board Man [OP] Well-Known Member

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    It will leak out to the proper level in a month or two
     
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  15. Aug 5, 2023 at 1:33 PM
    #15
    Babyota

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    I thought I'd kick this dead horse one more time.

    At 102° ambient temperature, idling, in traffic the air conditioner wasn't cooling. The clips that hold the condensor on the bottom broke and it pulled away from the radiator and wasn't getting enough air flow. Some foam and zip ties it's blowing cold again.
     
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