Hesitant acceleration around 12 mph

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Jeet Kh, Jan 13, 2025 at 9:28 AM.

  1. Jeet Kh

    Jeet Kh New Member

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    2011 Prius
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    My 2011 Prius with 136k miles, has started to show hesitant acceleration 12 mph; once past that everything else is fine.Suggestions regarding what it could be and how to fix it will be greatly appreciated. Thanks.JK
     
    #1 Jeet Kh, Jan 13, 2025 at 9:28 AM
  2. bisco

    bisco cookie crumbler

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    with engine on or off?
    if on, completely warmed up?
    possibly the egr circuit or throttle body, any warning lights?
    have you done regular recommended service, especially 120,000 miles or km equivalent?
     
    #2 bisco, Jan 13, 2025 at 9:01 PM
  3. Jagjit Khosla

    Jagjit Khosla Junior Member

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    Thanks bisco,
    All maintenance except changing engine coolant and spark plugs has been done. Hesitant acceleration experienced a couple of times shortly after leaving driveway. Once a rough engine at start also occurred; temperatures a few degrees below freezing. No warning light whatsoever. If, it is egr circuit or throttle body, what needs to be done. Thanks
     
    #3 Jagjit Khosla, Jan 15, 2025 at 5:08 PM
  4. bisco

    bisco cookie crumbler

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    check out @NutzAboutBolts youtube page. i believe he covers both of those topics
     
    #4 bisco, Jan 15, 2025 at 8:44 PM
  5. bisco

    bisco cookie crumbler

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    here's one from merv on the egr, very entertaining guy

    watch
     
    #5 bisco, Jan 15, 2025 at 8:46 PM
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