Noise while accelerating - youtube video

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by kalome, Jul 26, 2012.

  1. kalome

    kalome Member

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    Any ideas?

    I posted before on this issue and wanted to include a video I just made yesterday.
    Noise occurs @ 0:03, 0:12 & 0:42



    Thx
     
    #1 kalome, Jul 26, 2012
  2. Jonny Zero

    Jonny Zero Giggidy

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    Wow. Have not heard that before. Does not sound like a ping or knock, more like something is rattling. I would not think the engine load was high when the noise happened, the HSI was still in ECO.
    There is a clutch shock damper thing between the engine and the PSD, could it be slipping and causing a rattling sound? Pure speculation on my part...
     
    #2 Jonny Zero, Jul 26, 2012
  3. kalome

    kalome Member

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    I think it always happens at low speeds (up to 30-35mph) accelerating. I don't remember if it happens if I am accelerating from lets say 40 or 50mph.
    I did not notice it when I first got the car. I think it started happening after i had 2-3000 miles on the car. I have close to 6000 now.
     
    #3 kalome, Jul 26, 2012
  4. tatossian

    tatossian Junior Member

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    Have you resolved this, or brought it to the dealer?
     
    #4 tatossian, Jul 26, 2012
  5. kalome

    kalome Member

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    I brought it to the dealer before I made the video. They said they test drove it and did not hear anything.
    I am going to call and ask if I can email them the video and take a look.
    Thought I would post on PriusChat first.
     
    #5 kalome, Jul 26, 2012
  6. tatossian

    tatossian Junior Member

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    I'm interested in their response. I'm getting the same noise, only on highway when accelerating, when the battery is at the same level as in your video. I'm at 7000 km with the car. It sounds like it's coming from the passenger side, but can't really tell... Who knows, maybe this noise is normal?
     
    #6 tatossian, Jul 26, 2012
  7. kalome

    kalome Member

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    I will let you know what they say.
    It isn't a normal sound on the car. My 2011 Prius never made this noise.
     
    #7 kalome, Jul 26, 2012
  8. edthefox5

    edthefox5 Senior Member

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    Annoying sound. Open the windows and see where its coming from. Front or back or in the cabin? Engine or suspension?

    To figure that out gun it alittle when you hear that noise and see if the speed of the rattle tracks engine rpm. See if it speeds up with engine rpm.
    If it does not track engine its running suspension. If running suspension see if it goes away when you tap the brakes.
    Maybe brake related. Sounds alittle like brake pad squeek.

    Dealer will be little help. You will have to almost find this yourself.

    Good Luck!
     
    #8 edthefox5, Jul 26, 2012
  9. wjtracy

    wjtracy Senior Member

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    That chirping sound might be knocking.
    I am repeating my earlier post, but put Premium in there, and if you still get the noise, I do not think it is knocking.
     
    #9 wjtracy, Jul 29, 2012
  10. kalome

    kalome Member

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    Thanks. It is hard to decide what to do. I hear conflicting opinions on a few different posts. Don't use higher octane, only 87...Try higher octane or add fuel additive/cleaner.
    I believe the manual says to use 87, whether that matters or not. I'll have to double check.
     
    #10 kalome, Jul 29, 2012
  11. wjtracy

    wjtracy Senior Member

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    You can go with middle grade octane should stop it too.
    Or use a half tank Premium.
     
    #11 wjtracy, Jul 29, 2012
  12. ucsmfu

    ucsmfu Senior Member

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    that sound doesn't sound normal to me, definitely a problem, hope the dealership can fix this problem :) good luck !
     
    #12 ucsmfu, Jul 30, 2012
  13. Flying White Dutchman

    Flying White Dutchman Senior Member

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    Dont hear anything? But i am on phone
    Maybe your battery fan?

    -Htc Tapatalk ( sorry for auto spell correct )
     
    #13 Flying White Dutchman, Jul 30, 2012
  14. Jonny Zero

    Jonny Zero Giggidy

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    The noise is there and it is no fan. sounds like a ratchet spinning backwards fast.
     
    #14 Jonny Zero, Jul 30, 2012
  15. jpitt-32

    jpitt-32 Junior Member

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    Did you ever figure this out? My 2010 does this with 9k miles on it. Mine does this at highway speeds and only under slight throttle. It sounds just like spark knock. It does it a lot with 87 octane and slightly with 93 octane. I think that they "Toyota" are trying to get all of the power from every drop of fuel, that they have the timing cranked up so far on the engine that it induces detonation.
     
    #15 jpitt-32, Oct 9, 2012
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