A32 - 3.0v6 engine jerking

Discussion in 'The Cefiro Club Malaysia' started by cooper1275, Feb 15, 2008.

  1. sb3

    sb3 Senior Member
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    CTK22, you have solve your jerking problem by engine swap, good for you. But has anyone ever solved the jerking problem without engine swap ? No really I mean fixed the jerking problem? Why so many VQs have these problem after certain years of usage? Is that a engine flaw or what. I've notice that even in the states they r having this similiar problem. I don't hear a camry or an accord having such problem (same manufacturing year). I'd reaaly like to find the culprit. Any suggestion?
     
  2. ctk22

    ctk22 Senior Member
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    no idea what's actually the problem. Maybe due to heat that's causing the decay of sensors' ability? U know, this V engine produce a lot of heat.
     
  3. weikee

    weikee Senior Member
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    I mention some of the things you can look at before, maybe you just dig back the history. I solved mine.
     
  4. Omari

    Omari 5 Year | Silver

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    Hi to all,
    I have similar problem on my a32 30. Asked a few friends. One of them open hood, star engine, engage D. He notice slight movement of engine, he said maybe engine mounting koyak. Maybe true as he had same problem on 2 old cars before.
     
  5. 12savefuel

    12savefuel Senior Member
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    Guys with reference to the Original jerking problem during idle in D or N problem, if you have tried all the options as previously described in the forum, I suggest to try changing 2 new O2 sensors, as this controls the AF ratio at idle. It feels like a lean misfire stumble rather than rich misfire stumble.

    As with reference to detonation, yes the VQ30 does detonate and is intake air temp related. It will detonate from -0.2bar all the way to 0bar with high load on the engine like A/C on and a slope in 2nd, 3rd, 4th gear. It will even detonate starting at -0.3 bar if your EGR system is blocked or faulty. I have tried it and if you disable the EGR system it will detonate at -0.3bar so make sure your whole EGR system is clean and working well.

    You will only have this problem when you engage from N to D or switching between gears. The problem if I understand it right is that in D when idling it will misfire and stumble. Which a broken engine mounting will not solve. If the mounting is broek when moving between the gears you will feel a "klok" feeling. The feeling that other are getting is a stumbling and misfire like when your heart skips a beat. It will idle smooth then miss, then idle smoooth then miss 2 -3 times them smooth again, all while in D but will never stall. The VQ engine should be smooth all the time.
     
    #85 12savefuel, Feb 25, 2013
    Last edited: Feb 25, 2013
  6. mrs88

    mrs88 Senior Member
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    Plug coil socket disconnected n wiring improper/broken.
     

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