What is this pump? (Pic & video)

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by burns777, Jun 12, 2022.

  1. burns777

    burns777 Junior Member

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    Noticed strange noise this morning from my 2008 Prius Touring. Narrowed it down to this pump. 0% mechanical here. Can someone tell me what this is (pic below) and why it might be making this noise (in video)? Thanks in advance for any help you can provide.

    [​IMG]

    Vid:

     
    #1 burns777, Jun 12, 2022
  2. alftoy

    alftoy Senior Member

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    #2 alftoy, Jun 12, 2022
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  3. PriusCamper

    PriusCamper Senior Member

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    The position sensor insides these fail and make it sound like an old disc drive on a computer powering up... I tend to always buy used parts from the junk yard, but in this case the brand new aftermarket ones are barely more expensive than a used one and that sensor wearing out is a known problem. Here's the one I bought last week that arrives on Monday: https://www.ebay.com/itm/394097566363
     
    #3 PriusCamper, Jun 12, 2022
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  4. burns777

    burns777 Junior Member

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    Thanks for the replies. If I'm not getting an error code or any noticeable issues (besides the sound) do I still need to replace?
     
    #4 burns777, Jun 15, 2022
  5. PriusCamper

    PriusCamper Senior Member

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    Be patient young grasshopper... Your Check engine light will eventually turn on... For this particular problem it takes a while. And I've known people that have gone years and years ignoring this problem with no issue other than loss of MPG and not knowing if there's other check engine light issues coming up because the light is already on.
     
    #5 PriusCamper, Jun 15, 2022
  6. ChapmanF

    ChapmanF Senior Member

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    ... a disadvantage worth taking seriously whenever thinking about ignoring one 'unimportant' trouble code.
     
    #6 ChapmanF, Jun 15, 2022
  7. PriusCamper

    PriusCamper Senior Member

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    Yeah... But I've never met a person I explained this to who were willing to take as seriously as I was... That's when I shrug my shoulders and think of the old TV commercial of the mechanic saying, "You can pay me now or your can pay me later."
     
    #7 PriusCamper, Jun 15, 2022
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