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Car knocks When Changing Mg2 to ICE in a hill

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by san, Nov 28, 2016.

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  1. san

    san Junior Member

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    I recently ( 1 month back)changed 12v battery (after 5 years) of my 2010 3rd gen prius.and recently changed the engine airfilter. when i drive in a hill (40-45 degree slope) sometimes engine knocks and misses for a while with a heavy noise.this happens when its change automatically from electric motor to the engine. During starting of the ICE it knocks ,this happens sometimes.not always and this happens only in a hill.not always.i noticed it on display bar when ICE kickstarts it knocks.in a flat road no issues at all.fuel consumption average 23-25km per litre.egr cleaning done 30000km back.want to know when running on electric motor(not ev mode) when battery gets down to low displays 2 bars then automatically its kickstarting ICE,from where it draws power to the mg2 to rotate engine?during that first rotation of engine it knocking vibrating.it happens only in a hill(climbing 40-45 slope), the thing is, it not happen everytime once in a 100 time
     
    #1 san, Nov 28, 2016
    Last edited: Nov 29, 2016
  2. tankyuong

    tankyuong Senior Member

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    That's what mine did before the crankshaft put a hole in the engine
     
    #2 tankyuong, Nov 28, 2016
  3. san

    san Junior Member

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    Thanks! Is it regarding engine oil issue?or engine oil pressure
     
    #3 san, Nov 28, 2016
  4. tankyuong

    tankyuong Senior Member

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    Lack of oil change
     
    #4 tankyuong, Nov 29, 2016
  5. san

    san Junior Member

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    Last week changed the engine oil after 9000km,using only 0w30 mobil1 full sunthetic oil.oil changed at regular intervals.once i used castrol edge professional 0w30 full synthetic that few years ago.then again switched to the mobil1 full synthetic.always used toyota filters.oil level is ok.no burning issue can u please explain
     
    #5 san, Nov 29, 2016
  6. san

    san Junior Member

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    Hybrid repair center here says the issue is may be fault in battery pack
     
    #6 san, Nov 29, 2016
  7. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    How many kilometers (or miles?) on this car?
     
    #7 Mendel Leisk, Nov 29, 2016
  8. san

    san Junior Member

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    135000 km
     
    #8 san, Nov 29, 2016
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  9. san

    san Junior Member

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    Transmission fluid issue? This engine knock with heavy metal strucking noise comes only for a second in about 45 degree slope.at this stage car engine stalling.need some expert opinion
     
    #9 san, Nov 29, 2016
  10. bisco

    bisco cookie crumbler

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    have you owned it since new?
     
    #10 bisco, Nov 29, 2016
  11. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Purely editorial: "45 degree slope"? ;)

    IMG_5946.jpg
     
    #11 Mendel Leisk, Nov 29, 2016
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  12. san

    san Junior Member

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    Yes.from 2010
     
    #12 san, Nov 29, 2016
  13. bisco

    bisco cookie crumbler

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    do you keep an eye on the oil level between changes? are you burning any?
     
    #13 bisco, Nov 29, 2016
  14. san

    san Junior Member

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    Yes rufely 40-45 degrees.
     
    #14 san, Nov 29, 2016
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  15. san

    san Junior Member

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    Yeah less than quarter of liter for 9000km
     
    #15 san, Nov 29, 2016
  16. bisco

    bisco cookie crumbler

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    that's very good, and shouldn't be a part of the problem.
     
    #16 bisco, Nov 29, 2016
  17. san

    san Junior Member

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    Thanks!
    Cant understand Why it happens only on a slope of a 35-40 degree climbing.can it be regarding engine oil circulation or a transmission oil level-circulation problem?
     
    #17 san, Nov 29, 2016
  18. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    I don't think any 2 wheel drive could manage that, but anyway: it sounds like an extreme slope you have, maybe it's pushed too hard by this. Other cars use this route?
     
    #18 Mendel Leisk, Nov 29, 2016
  19. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    More like extreme stress on the whole drivetrain. I've got a roof that's 32 degrees: I will NOT stand on it, without a rope. I tried once, just broke into a sweat, had to get off.
     
    #19 Mendel Leisk, Nov 29, 2016
  20. san

    san Junior Member

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    Thanks!
    Cant understand Why it happens only on a slope of a 35-40 degree climbing.can it be regarding engine oil circulation or a transmission oil level-circulation problem?

    Not exactly 40, may be 30-40 degree today it knocked in a car park with 30 degree angle
     
    #20 san, Nov 29, 2016
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