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New noise on a 2010 Prius

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Marlowe, Aug 23, 2024.

  1. Marlowe

    Marlowe Junior Member

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    I’ve been experiencing a noise recently. It kind of sounds like an electric motor straining/whirring. It switches on for a sec or two and then stops. It keeps on repeating every 30 seconds or so. It’s coming from the driver’s side of top of the engine and I hear it from inside the car. I can hear it when the car is on but stationary. I have an mp3 but I can't see to upload it here as an attachment.

    Any ideas?
     
    #1 Marlowe, Aug 23, 2024
  2. Tombukt2

    Tombukt2 Senior Member

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    Brake pump .pumping up brake accumulator. Usually internal leak.
     
    #2 Tombukt2, Aug 23, 2024
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  3. ChapmanF

    ChapmanF Senior Member

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    Sounds like a sort of muffled rattlesnake or joy buzzer? Brake pump.
     
    #3 ChapmanF, Aug 23, 2024
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  4. ASRDogman

    ASRDogman Senior Member

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    My brake pump has been doing that since July 2017, maybe longer.
     
    #4 ASRDogman, Aug 23, 2024
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  5. bisco

    bisco cookie crumbler

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    How many miles on her?

    I think you need 5 posts to add a link
     
    #5 bisco, Aug 23, 2024
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  6. Marlowe

    Marlowe Junior Member

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    I haven't been here in a while. Probably because the Prius has been a dream since I got it in 2011-12 with very low miles (<1K?). Aside from cosmetics and basic maintenance, it's still a worry-free car that's remains a performer. So, as long as it keeps doing what it always has, we will remain together.

    Oh, the satellite radio bit the dust last summer. That was a bummer. I heard it would be pricy to fix so I didn't get it checked

     
    #6 Marlowe, Aug 23, 2024
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  7. Marlowe

    Marlowe Junior Member

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    What would it cost to fix the brake pump? Am I at risk of losing braking?
     
    #7 Marlowe, Aug 23, 2024
    Last edited: Aug 23, 2024
  8. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    You must be doing something right. Have you ever cleaned the EGR (Exhaust Gas Recirculation) system?
     
    #8 Mendel Leisk, Aug 23, 2024
  9. bisco

    bisco cookie crumbler

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    around $1,000. - $1,500. for parts, or $3-4,000. for a dealer to do it. you might find an indy mech cheaper than a dealer.
    you'll get warning lights before you have to replace it, and even when it dies altogether, you have mechanical breaking.
    could be many trouble free years yet, no way to tell.
     
    #9 bisco, Aug 23, 2024
  10. Marlowe

    Marlowe Junior Member

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    I don't think so. What would that do?

     
    #10 Marlowe, Aug 23, 2024
  11. Marlowe

    Marlowe Junior Member

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    Uh oh. That would be the first serious expenditure on this car. That might be the deal-breaker.

     
    #11 Marlowe, Aug 23, 2024
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  12. bisco

    bisco cookie crumbler

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    yeah, i traded my 2012 when the engine started misfiring.
     
    #12 bisco, Aug 23, 2024
  13. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    I'm genuinely perplexed. Typically a gen 3 with your miles, EGR never cleaned, the head gasket would be blown by now.

    How long have you had it? Recent acquisition?
     
    #13 Mendel Leisk, Aug 23, 2024
  14. Marlowe

    Marlowe Junior Member

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    I've had it since 2011 or 2012. I may have had that done, I just don't recall. Is that a big job? What would it cost?

     
    #14 Marlowe, Aug 23, 2024
    Last edited: Aug 23, 2024
  15. bisco

    bisco cookie crumbler

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    it's time consuming, maybe a grand to have someone else do it
     
    #15 bisco, Aug 23, 2024
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  16. bisco

    bisco cookie crumbler

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    this is an informative and funny how to, and mendel gets a shout out:

    watch
     
    #16 bisco, Aug 23, 2024
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  17. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    I’m just scratching my head about your miracle 3rd Gen. (n)
     
    #17 Mendel Leisk, Aug 23, 2024
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  18. Marlowe

    Marlowe Junior Member

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    I'm going to call my mechanic to see if we covered the EGR in a past servicing. I've been on top of all maintenance from the start.

     
    #18 Marlowe, Aug 26, 2024
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