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AC Pressures after Condensor replaced

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Greg Kaiser, Sep 1, 2014.

  1. Greg Kaiser

    Greg Kaiser Junior Member

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    Location:
    Santan Valley Arizona
    Vehicle:
    2008 Prius
    Model:
    II
    Hi

    It's been a long weekend with my 2008 Prius (100K miles). Water pump then condenser.
    I had planed on replacing the water pump since I noticed allot of pink residue
    on the internal pulley surface

    On Friday on the way home on the freeway the SUV in front of me threw up a retread
    and it hit the lower center grill and punched a hole in the Condenser. At least I could drive
    home It was 108 here in Arizona.

    I got the Condenser from my local AZ.
    Got the ND-11 from Napa.
    Rented the vacumn pump from Az.

    Got the condenser out but rounded one of the 10mm bolts with washer fixed to the bolt. I tried a punch
    Vice grips but ended up grinding it off. Lesson learned . Use hex sockets not the other ones with many notches

    Got it all back together. Evacuated the system added about 1.5oz of ND-11 in the Yellow but in purging
    the air out lost some of the oil. Added 12oz of R134. I have a Chiltons manual and it says 14 oz is the spec
    Is this correct

    The inside ventsare reading 45 def F. The pressures on the manifold were 35lbs low side and 170lbs high side. Ambient temperature in the garage was about 98deg F
    Not sure how accurate the guages are. 10 years old. Do these Pressures sound correct?

    Br

    Greg
     
  2. exstudent

    exstudent Senior Member

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    Couldn't fluid and gas capacity specifications for my 2007.

    Assuming:
    1) 2008 and 2007 have the same specifications.
    2) 35lbs and 170lbs, you meant PSI (Pounds Per Square Inch)
    3) you tested your vent readings as described by Toyota
    Then:
    Low Pressure) 35PSI = .2413MPa(Mega-Pascal) [specifications .15MPa-.25MPa] GOOD
    High Pressure0 170PSI = 1.17MPa [specifications 1.37MPa-1.57MPa] .2MPa LOW; 14oz of R134a might be correct, given the 12oz you added.
    Online PSI to MPa converter. LINK

    See attached, for test procedure, specifications, and possible diagnosis for a low High side reading.

    Good luck.
     

    Attached Files:

  3. JC91006

    JC91006 Senior Member

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    shouldn't this be an insurance claim against the suv?
     
  4. Greg Kaiser

    Greg Kaiser Junior Member

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    II

    I thought about it but I have a $500.00 deductable and the SUV was long gone before I knew I had an Issue.

    Thanks
     
  5. Greg Kaiser

    Greg Kaiser Junior Member

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    Location:
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    Vehicle:
    2008 Prius
    Model:
    II

    Hi Yes PSI for sure.

    Thanks for the links. I'll get a look.

    Looks Like Low Side Range 22-37 PSI
    High Side Range 200-228 PSI

    I'll get a look at the site glass tomorrow.

    BR

    Greg
     
    #5 Greg Kaiser, Sep 6, 2014
    Last edited: Sep 6, 2014
  6. Greg Kaiser

    Greg Kaiser Junior Member

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    Location:
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    Vehicle:
    2008 Prius
    Model:
    II
    UPDATE

    Calibrated guages and now get 37 psi low side and 220 psi on the high side

    Also thru thesight glass I do see allot of foam while the compressor is on and after I turn
    it off some foam that stops after 30 seconds or so.

    Greg
     
  7. exstudent

    exstudent Senior Member

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    Low Side) 37PSI = .2551MPa, is .01 (rounding) too high. Don't know if one-one-hundredth is critical.
    High Side) 220PSI = 1.5168MPa, is within specs.

    Was the ambient temperature w/in Toyota's testing specs?
    Was the AC vent temperature w/in specs as well?
    If yes to both, looks like you dodged a bullet.