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2 Cylinders dont work

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    2 Cylinders dont work

    Hi, my engine is M52b28TU(dual vanos) and problem is: 2 cylinders dont work and max rpm when hiting pedal first time is 6k than engine starts to vibrate and max rpm is 4k. I cheked injectors - they are ok, i changed 1 lambda sensor, Spark plug sockets are ok too.
    BTW: before hiting pedal to the metal everything is ok.

    What could be wrong?
    Last edited by Tomas; 03-22-2012, 11:36 AM.

    #2
    It rather sounds like the DME is detecting multiple misfires on one or more cylinders and then shutting the affected cylinders down. Once shut down, a cylinder will stay shutdown until the engine is shut off and re-started.

    Potential causes include intake leaks, injector problems, coil/boot/plug problems, flaky intake cam sensor, or a flaky crank position sensor. There may be fault codes stored in the DME that can help with the diagnosis.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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      #3
      Thanks!

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