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Where is Inverter Coolant Pump (electric water pump)

Discussion in 'Gen 3 Prius Main Forum' started by MilkyWay, Feb 6, 2017.

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  1. MilkyWay

    MilkyWay Active Member

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    Where is it located...? I think it is on the passenger side and requires unbolting from bottom and top based on a video I saw a couple weeks ago but cannot find.

    Is this correct? Any other tips for job? How long should it take?

    Thanks
     
    #1 MilkyWay, Feb 6, 2017
  2. MilkyWay

    MilkyWay Active Member

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    Here is a how-to on a 2012-2016 Prius C....Looks to me like it could be similar/same setup????

    Can someone skim through video and confirm???

     
    #2 MilkyWay, Feb 6, 2017
  3. Samprocat

    Samprocat Active Member

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    I will strongly suggest that this type of repair is done by experienced Mechanic....this requires more than just swapping parts and pouring coolant....
     
    #3 Samprocat, Feb 6, 2017
  4. MilkyWay

    MilkyWay Active Member

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    And why is that??? Or please elaborate? My cousin swapped pump on my gen 1 prius --- immediately fixed problem --- took maybe 90 minutes ---- and it was plug and chug....Only thing we didn't do is bleed the system but I asked in the gen 1 forum and everyone said it was unnecessary.
     
    #4 MilkyWay, Feb 6, 2017
  5. mjoo

    mjoo Senior Member

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    #5 mjoo, Feb 6, 2017
  6. Andyprius1

    Andyprius1 Senior Member

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    Not usually a problem, but bleeding is simple and takes no real effort.
     
    #6 Andyprius1, Feb 7, 2017
    MilkyWay likes this.
  7. MilkyWay

    MilkyWay Active Member

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    Any how-to videos? Where is it located? Easier/harder than changing gen 1 pump which my cousin had zero problem swapping.
     
    #7 MilkyWay, Feb 7, 2017
  8. Samprocat

    Samprocat Active Member

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    Then Cousin could help you on this......And yes definitely you need to make sure there is no air pockets once inverter is back to function......
    And is located about same as the other you mentioned....just little more staff around than before
    Take good care on priming the coolant system and eliminating air in the loop of inverter....
     
    #8 Samprocat, Feb 7, 2017
  9. Andyprius1

    Andyprius1 Senior Member

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    Search by the Generation of your vehicle. I am guessing, leave engine running, leave cap off inverter jar wait for bubbles to stop exiting, if level of inverter fluid is going down, refill to full line as needed. Watch for temperature overheat. An air pocket can cause problems because the inverter fluiid is not flowing properly.. The inverter can overheat w/o coolant circulation.
    Normally it is not a problem IF you wait until the jar is showing no more bubbles.

    Look for current posts for your year as my 2005 is now pretty antiquated as is also my advice.
     
    #9 Andyprius1, Feb 7, 2017
    Last edited: Feb 7, 2017
  10. mjoo

    mjoo Senior Member

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    #10 mjoo, Feb 7, 2017
  11. Andyprius1

    Andyprius1 Senior Member

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    Couldn't make up my mind, so I ordered one of each!
     
    #11 Andyprius1, Feb 7, 2017
  12. Samprocat

    Samprocat Active Member

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    If you go to Toyota web site and enter your vin number it will give you part number..if this is still difficult....use Toyota local parts store give them vin number and they will give you exactly what you asking for.....
     
    #12 Samprocat, Feb 7, 2017
  13. MilkyWay

    MilkyWay Active Member

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    I never had a problem locating part....I bought it used from a junkyard in California for $80 (on January 20th!). The part is interchangeable with a Lexus RX450 Hybrid which is why it costs so much new.

    Was just trying to find a how-to tutorial that gives step-by-step directions to make it easier for my cousin to swap but I think he'll be fine.
     
    #13 MilkyWay, Feb 10, 2017
  14. Rebound

    Rebound Senior Member

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    But this video replaced the engine coolant pump, not the inverter coolant pump. The inverter coolant was never drained and doesn't need to be bled. Also, most Gen III's don't have an engine coolant bleeder valve.
     
    #14 Rebound, Feb 22, 2017
  15. StarCaller

    StarCaller Senior Member

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    pictures of your cousin?
     
    #15 StarCaller, Feb 22, 2017
  16. MilkyWay

    MilkyWay Active Member

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    UPDATE: Put new (used) pump on and still not getting turbulence at idle....and it has code for P261 engine coolant pump 'b' control malfunction..

    This link (Coolant pump B control malfunction (P261B) | PriusChat) is saying that the code is for the engine coolant pump....I went ahead and ordered inverter pump because my brother said code was inverter pump + no turbulence.

    I confirmed that there was no turbulence in the reservoir on the drivers side back of motor but never rescanned code....so it is possible the code entire time was engine coolant pump which means I spent $150 for nothing ($80 labor + $80 used part)....I'm just going to pretend that both pumps are bad to make me feel less stupid but highly likely it was engine pump entire time...
     
    #16 MilkyWay, Feb 27, 2017
    Last edited: Feb 27, 2017
  17. MilkyWay

    MilkyWay Active Member

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    Would bad engine pump cause inverter pump not to function....also: FML
     
    #17 MilkyWay, Feb 27, 2017
  18. Rebound

    Rebound Senior Member

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    Well, no. If you have a bad engine coolant pump, replacing the inverter coolant pump isn't going to fix it.
     
    #18 Rebound, Feb 27, 2017
  19. MilkyWay

    MilkyWay Active Member

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    The question is, however, if engine coolant pump bad, would that cause zero turbulence in the reservoir on the drivers side (if hood popped and staring at engine it is the reservoir in the back on the right)...pink reservoir on right has no turbulence

    gen 3 engine compartment - Google Search:
     
    #19 MilkyWay, Feb 27, 2017
  20. Rebound

    Rebound Senior Member

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    The two cooling systems are completely separate.
     
    #20 Rebound, Feb 27, 2017
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