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Slow rev down after a hard acceleration

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Pdaddy, Nov 20, 2024 at 10:08 PM.

  1. Pdaddy

    Pdaddy Member

    Joined:
    Dec 10, 2013
    155
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    Vehicle:
    2010 Prius
    Model:
    II
    After a hard (not harsh) acceleration and letting up on the gas pedal the car slowly revs down. This does not affect performance and no codes are showing. Any idea what could cause this and if it will lead to other problems?

    This is a 2010 with about 280k miles..

    SM-G960U ?
     
  2. BiomedO1

    BiomedO1 Senior Member

    Joined:
    Mar 27, 2021
    1,856
    938
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    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    When was the last time the throttle body was cleaned out?