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Engine noise while accelerating

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by AceWorthy, Nov 10, 2014.

  1. AceWorthy

    AceWorthy New Member

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    2010 Prius
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    Hello,

    My 2010 Prius has been making an odd noisse intermittantly while accelerating. I haven't been able to reporduce it for the mechanics (of course). The best description I have for the noise is this. It sounds like the click/rattle sound a car makes when it is stalling. Just sped up. This can happen at any time I accelerate (even at highway speeds) but it usually happens just after I start moving from a stop. When it occurs it feels like there is a drop in engine power and I either have to take my foot off the accelerator, or push down harder and power through.

    Has anyone else experienced this?

    Thanks
     
    #1 AceWorthy, Nov 10, 2014
  2. JC91006

    JC91006 Senior Member

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    do you have enough oil in the engine?
     
    #2 JC91006, Nov 10, 2014
  3. GrumpyCabbie

    GrumpyCabbie Senior Member

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    Could be anything or nothing.

    A few more details about your car might help work this out; do you have 10,000 miles or 280,000 miles on the car, for example? What do you use the car for? Is it a lightly used second car or a taxi?

    Could be pinking due to wrong or contaminated fuel. But it could be anything without knowing more. You gotta help us to help you (y)
     
    #3 GrumpyCabbie, Nov 11, 2014
  4. mrbigh

    mrbigh Prius Absolutum Dominium

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    Dirty throttle body for the lack of power?
     
    #4 mrbigh, Nov 11, 2014
    Last edited: Nov 11, 2014
  5. AceWorthy

    AceWorthy New Member

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    St. Catharines, Ontario
    Vehicle:
    2010 Prius
    Model:
    N/A


    - My Prius has about 250000km on it (not sure what that is in miles) and I use it to drive to work (which is an hour away by highway).
    - Due to the mileage I do it is in for service about every other month so the oil is good. I also visually checked and the levels are good.
    - I always use the proper rated fuel at busy stations so the fuel should be good.

    Another thing I forgot to mention; the issue seems to occur more often on cool, damp days.
     
    #5 AceWorthy, Nov 11, 2014
  6. bisco

    bisco cookie crumbler

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    did they check it for trouble codes? maybe an injector service? have they cleaned the throttle body?
     
    #6 bisco, Nov 11, 2014
  7. GrumpyCabbie

    GrumpyCabbie Senior Member

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    Yeah it could be anything at that mileage. Get the dealers to check codes as that will give a good indication of what's wrong. Could be a simple misfire due to a failing coil pack or spark plug or throttle body sensor. Maybe even a gummed up EGR valve. All these issues should show up as a code.

    If you wanted instead, you could try some fuel system cleaner or check when your spark plugs were last changed etc, but you're probably best seeing your local friendly Toyota dealer.
     
    #7 GrumpyCabbie, Nov 11, 2014
  8. dame3780

    dame3780 Member

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    I've been having the same issue for at least 15k miles. Did you ever get it figured out? Mine happens after letting off the gas and slightly accelerating between 15-30mph. Every time. Rattle sounds from the passenger/glove box area. It's annoying and I'd like to see what you may have done to remedy the problem. Thanks
     
    #8 dame3780, Feb 15, 2016
  9. dame3780

    dame3780 Member

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    Update: My rattle was diagnosed from Toyota as a loose strut bracket. It is still at the dealer. Will give an update once I get an opportunity to drive it. Working with ext. warranty so it's taking some time.
     
    #9 dame3780, Feb 27, 2016
  10. ilovegirls

    ilovegirls Member

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    What's a strut bracket? I have a weird rattle going over bumpy roads.
     
    #10 ilovegirls, Mar 5, 2016
  11. dame3780

    dame3780 Member

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    I believe it to be the top mount holding the strut in place. Toyota is also replacing the right lower control arm. Still waiting for repairs to be completed.
     
    #11 dame3780, Mar 6, 2016
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