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Prius waterpump is making a squealing/screeching noise after driving (video)

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by zoeboi954, Nov 8, 2016.

  1. zoeboi954

    zoeboi954 Junior Member

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    I just been through hell with replaing waterpumps on my old engine before it was replace now I got a my engine swapped out, the waterpump that came with the new engine also failed a couple months ago and it made the same noise , now the new waterpump also makes this squealing noise after I drive. does anybody know why

    Here video, it's a high pitch squeal and a faint squeal. dont confuse the faint squeal as background noise

     
    #1 zoeboi954, Nov 8, 2016
  2. JC91006

    JC91006 Senior Member

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    Maybe it's the pulley or the belt making noises. Is the belt tension correct?

    If the water pump is not new, just get a new one
     
    #2 JC91006, Nov 8, 2016
  3. ChapmanF

    ChapmanF Senior Member

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    What belt? Profile says the car's a 2010. And the electric water pump is a bit salty to just keep replacing. Strange....

    -Chap
     
    #3 ChapmanF, Nov 8, 2016
  4. zoeboi954

    zoeboi954 Junior Member

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    No belt, yes 2010 3rd Gen electric water pump. and yes it's a brand new waterpump only been in for about 2-3 months.

    Also new radiator, thermostat, and coolant had been deeply flushed

    And the video was recorded with the vehicle off
     
    #4 zoeboi954, Nov 8, 2016
  5. zoeboi954

    zoeboi954 Junior Member

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    Just thought I give an update on this. It turns out the waterpump was not making this noise it was my a/c compressor. And it would happen everytime I use the a/c. I'm not sure if that means it gonna fail soon or what. But it still works for the time being
     
    #5 zoeboi954, Apr 17, 2017
  6. mjoo

    mjoo Senior Member

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    If you don't have a mechanic's stethoscope - a good alternative is to get some cheap plastic tubing. Put one end by your ear drum and the other end near the moving part to isolate the sound.
     
    #6 mjoo, Apr 17, 2017
    Dyjital likes this.
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