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Thread: When engine temp gets to normal RPMs start droping

  1. #1
    Join Date
    Dec 2014
    Location
    Latvia
    Posts
    9
    My Cars
    1992 BMW touring

    When engine temp gets to normal RPMs start droping

    Hi!
    Maybe somebody can help.
    When engine gets to operating temp. (needle in middle)
    RPMs start slowly dropping and then after 10 minutes or so in start stop traffic the car stalls. After waiting hour or so i can start it again.
    Another way to start it is after cranking it i hit the throttle and it drives again a bit jittery but drives, until i need to stop.
    M52TUB28

    What might be the problem?
    Thanks
    Last edited by mixboyq; 03-19-2018 at 06:48 AM.

  2. #2
    Join Date
    Apr 2015
    Location
    Netherlands
    Posts
    164
    My Cars
    2000 E46 328i
    Might be a vacuum leak or faulty cam shaft sensor.

  3. #3
    Join Date
    Mar 2015
    Location
    west chicago il
    Posts
    509
    My Cars
    01 E46 330i 5sp man spor
    Could be dirty icv

    Sent from my SAMSUNG-SM-G870A using Tapatalk

  4. #4
    Join Date
    Dec 2014
    Location
    Latvia
    Posts
    9
    My Cars
    1992 BMW touring
    Thanks for input

    Solved problems it was broken membrane on fuel rail so fuel got in to oil and oil in fuel. Also one cracked vac tube. But main problem was the membrane.
    it was discovered by checking oil stick and there was double oil level.

    The car has never been so smooth, while driving and in idle.
    Last edited by mixboyq; 03-20-2018 at 03:06 PM.

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