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Exhaust fumes in cab

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Ldeal, Nov 5, 2024.

  1. Ldeal

    Ldeal New Member

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    2011 Prius
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    Three
    2011, seems today getting exhaust smell in the cab. Seems worse when letting off the gas pedal, coasting.. 186k miles. No codes. Gas mileage has dropped on this tank full also. Still runs smooth.
     
    #1 Ldeal, Nov 5, 2024
  2. Kenny94945

    Kenny94945 Active Member

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    Location:
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    Vehicle:
    2016 Prius v wagon
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    Four
    Look for exhaust fume traces at the joints and/ or a crack.
    Check all the exhaust system bolts.

    I'd start there.
    Let us know what you find :)
     
    #2 Kenny94945, Nov 6, 2024
  3. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Vehicle:
    2010 Prius
    Model:
    Touring
    Presumably nothing done recently, say head gasket? How about oil fill cap or dipstick: both in place? Any other maintenance? If you’re parking outside: check underneath, maybe someone trying to get the catalytic converter but failed.
     
    #3 Mendel Leisk, Nov 6, 2024
  4. Ldeal

    Ldeal New Member

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    Vehicle:
    2011 Prius
    Model:
    Three
    Oil change recently, cap tight and dipstick all way in... I have noticed it really happens when let off gas coasting to stop sign. Gas milage dropped to like 38mpg too.
     
    #4 Ldeal, Nov 6, 2024
    Mendel Leisk likes this.
  5. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
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    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    How long have you had it?
     
    #5 Mendel Leisk, Nov 7, 2024
  6. Ldeal

    Ldeal New Member

    Joined:
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    Location:
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    Vehicle:
    2011 Prius
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    Three
    Owned for 9 months, 24k miles on ot since I have owned it
     
    #6 Ldeal, Nov 7, 2024
    Mendel Leisk likes this.
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