Question about BMW 335

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I have an intermittent starting problem with my BMW 530 diesel year 2000, it starts for 5 or so starts and fails to fire next time even with engine cranking at good speed,either engine hot or cold.When left for five minutes or so starts on first attempt. A new battery,a new camshaft sensor and a new fuel forwarding pump -underneath passenger seat- have been fitted . This seems to be a type fault on this model, as posted on the internet ,but nobody gives the defining answer. Nothing shows up on diagnostics as when the car gets to the garage the problem has self righted

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  • Tom Dolan May 24, 2010

    If problem is an intermittent type fault why does it start perfectly on all the other occasions.can't see how recalibration is going to fix this.??

  • Tom Dolan Jun 04, 2010


  • Tom Dolan Mar 10, 2013

    the fault was in a starting relay, the mechanic drove the car for a few days and when the car wouldn't start he connected the diagnostic box and found the fault..That's how to fix an intermittent fault.Tom Dolan BE,IMEE



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Hi! You may need to have your engine calibrated. Once done, I believe you'll be good. Its like you done everything but missed something. Hope this helps and good luck!

Posted on May 12, 2010

  • dj_relly999
    dj_relly999 May 24, 2010

    Thats the tricky part when it comes to diesel powered engine. They may run good today and tomorrow may not. I suggest that you have your PCM (powertrain control module) checked too, when its faulty it trips sometimes. We may be dealing with a faulty PCM too.



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