Gas engine stumbles before cutting off

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by theegg, Jun 2, 2008.

  1. theegg

    theegg Junior Member

    Joined:
    Jun 2, 2008
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    Location:
    Georgia
    Vehicle:
    2018 Prius
    Model:
    IV
    I have 8500 miles on my 08 Prius. Recently, when I come to a stop, the gas engine sounds like it is "stumbling", the car shakes noticeably & then the gas engine cuts off. It tends to do it a lot when I start the car, drive a few yards, and stop before pulling onto the street. The car will have sat for 4 or 5 hours, and the ambient temperature in GA has been in the 90s. Is this engine behavior common? It doesn't do it all the time. And I haven't noticed any decrease in performance. Suggestions please.:)
     
    #1 theegg, Jun 2, 2008
  2. Sufferin' Prius Envy

    Sufferin' Prius Envy Platinum Member

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    Totally normal operating procedure for a Prius.
    Suggestion: Relax and smile each time it does it . . . you are saving gas!
     
    #2 Sufferin' Prius Envy, Jun 2, 2008
  3. Neicy

    Neicy Member

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    Location:
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    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    Perfectly normal. If you do a search for "stages of operation" you'll get lots of info. The one I'm attaching has some great links at the bottom.
     

    Attached Files:

    #3 Neicy, Jun 2, 2008
  4. Rakimb17

    Rakimb17 Junior Member

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    Location:
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    2008 Prius
    I switch to the Mobil 1 0-w20 oil about 1500 miles ago and my car hasn't stumbled like that since. In fact my passengers can't even tell when the engine cuts out.
     
    #4 Rakimb17, Jun 2, 2008
  5. Sufferin' Prius Envy

    Sufferin' Prius Envy Platinum Member

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    I too switched to Mobile 1 synthetic . . . 45,000+ miles ago, and I still feel the hard stumble every once in a while.

    Oil has little to do with it.
     
    #5 Sufferin' Prius Envy, Jun 2, 2008
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