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Replaced Inverter Pump Gen2

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by canoeit, Nov 5, 2022.

  1. canoeit

    canoeit Junior Member

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    New member, multiple Prius owner. I own 3 Gen 2 Prius for the last 5 years and things are starting to go South but nothing I haven't been able to fix but 2 days ago I got the death triangle, no big deal, check codes, it's the coolant valve, replaced it, all good. Now today, after driving just 15 miles, again, the triangle and code PA093 inverter pump, checked reservoir and no movement, coincidence the day after changing the coolant valve, ok. Replaced the inverter pump, clamped the hoses so no coolant loss but was going to bleed anyway but no movement in the reservoir again, hmm, checked the 15amp fuse, good, hmm, checked the voltage ate the pump connector and get 12.9V. Am I missing something? With 12+V at the connector shouldn't the pump run? Maybe a bad new pump? Unfortunatley, today was trash day and threw the old pump away so cannot test it.
     
    #1 canoeit, Nov 5, 2022
  2. Tombukt2

    Tombukt2 Senior Member

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    But you do know the new one is not working . Maybe bad ground
     
    #2 Tombukt2, Nov 5, 2022
  3. JC91006

    JC91006 Senior Member

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    Did you plug in the pump connector?
     
    #3 JC91006, Nov 5, 2022
    Tombukt2 likes this.
  4. Tombukt2

    Tombukt2 Senior Member

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    Your hand on it tells you it's running . It can be humming but moving no water coolant
     
    #4 Tombukt2, Nov 5, 2022
  5. SFO

    SFO Senior Member

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    Welcome to PriusChat!!
    How many miles on this vehicle?

    Has the coolant ever been replaced? (if so, did you use oem SLLC or something else)

    Where are you buying these replacement pumps from?

    FYI : you're moderated until you've posted 5 times.
     
    #5 SFO, Nov 5, 2022
  6. canoeit

    canoeit Junior Member

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    It is only grounded through the plug, correct? If so, I am getting voltage accoss the +- plug terminals.
     
    #6 canoeit, Nov 5, 2022
  7. canoeit

    canoeit Junior Member

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    210,000 miles
    Yes on the coolant replacement. Bought it at a Toyota dealer, trade in on a new one, 1 owner all service records at that dealer. Bought it with 70,000 miles.
    SLLC only
    Bought the replacement at Orielys
     
    #7 canoeit, Nov 5, 2022
  8. canoeit

    canoeit Junior Member

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    Can't feel a thing
     
    #8 canoeit, Nov 5, 2022
  9. canoeit

    canoeit Junior Member

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    Yes, zippo, nada. I am getting 12+V at the plug
     
    #9 canoeit, Nov 5, 2022
  10. SFO

    SFO Senior Member

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    Thought they came with a lifetime warranty?
    Sounds like you have a faulty pump.
     
    #10 SFO, Nov 6, 2022
  11. canoeit

    canoeit Junior Member

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    They do have a warranty and I called them yesterday. They had to order another and will arrive Tuesday.
     
    #11 canoeit, Nov 6, 2022
  12. pasadena_commut

    pasadena_commut Senior Member

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    Get an OEM pump. I had a Dorman for a while, and it actually seemed to be a more powerful pump than the OEM. But every once and a while it would decide "on this start, me no pump". Mighty inconvenient. Replaced it with a OEM pump and no problems since.
     
    #12 pasadena_commut, Nov 7, 2022
  13. canoeit

    canoeit Junior Member

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    Unfortunatley, I also orderd a Dorman. I installed the warranty replacement pump today, it works. For how long we will see.
     
    #13 canoeit, Nov 9, 2022
  14. edthefox5

    edthefox5 Senior Member

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    After market pumps do not work well. In fact there a big waste of time and money based on how many posts we have seen here about them.

    New Toyota pump online is $132.

    I wouldn't use after market parts anywhere on my Prius. Its all Chinese junk now...all of it especially electronic & suspension parts.
     
    #14 edthefox5, Nov 10, 2022
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