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Thread: 1.6 BGU Idling problems when warm - diagnostic help?

  1. #11
    Join Date
    Jan 2015
    Location
    Melb
    Posts
    157
    Users Country Flag

    Maybe you booster is faulty. Do you get any reserve assisted pumps of the pedal after you turn the engine off?

  2. #12
    Join Date
    Jan 2017
    Location
    Melbourne, VIC
    Posts
    17
    Thread Starter
    I get 2-3 pumps before boost is exhausted, unless the engine was acting up when I turned it off. Does that sound like a problem?

  3. #13
    Join Date
    Jan 2017
    Location
    Melbourne, VIC
    Posts
    17
    Thread Starter

    New info:
    I checked the measuring blocks while the car was running poorly today. IAT was ranging from 125-132*c.
    The IAT sensor works normally. Reads ambient when cold, warms up to expected temps (sub 80) when running properly.

    Would a stuck open EGR cause high temps at the intake, or am i on the wrong track?

    Edit: EGR Valve was causing the issues
    EGR passed adaptation when cold so I'd ruled it out. Today I checked when the engine was running bad and it failed adaptation.
    Once the engine was cooled I cycled the valve to make sure it was closed and unplugged it. Car ran perfect on a long mixed drive.

    In short, the lightly sooted EGR valve jams up when hot.
    Last edited by ball; 24-04-2017 at 08:12 PM.

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