Hyundai Trajet Sensor Location

Discussion in 'Hyundai Trajet' started by TheDragon, Sep 18, 2009.

  1. TheDragon

    TheDragon Guest

    My car goes from bad to worse

    I now have an engine check light on, the engine runs very rough at idle

    If I disconnect the sensor top right of the engine 3 wires, the engine runs
    better but still rough.

    Anyone know what it is? I have the service manual but nothing shown there
    TheDragon, Sep 18, 2009
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  2. Rubaiyat of Omar Bradley, Sep 18, 2009
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  3. TheDragon

    Partner Guest

    What engine? what year?
    Partner, Sep 18, 2009
  4. TheDragon

    John Guest

    Not sure what sensor you are talking about but with those symptoms I,d first
    be looking at a spark plug lead or coil.
    John, Sep 19, 2009
  5. TheDragon

    TheDragon Guest

    Its a 2.0L 16V. 2002 model Trajet.

    I opened the spark plugs today, none of them had the screw on tops (Little
    silver threaded caps), so got some tops and put them on. The plugs make a
    better contact now.

    Cylinder 4 right side one had liquid in there, indicating no spark, so
    removed all 4 plugs and placed on the engine block still connected to the HT
    leads. Turned over the engine and all 4 were good sparks, so its not any of
    the coil packs or HT leads
    Point to note, a strange layout, left pack does cylinder 2 & 3. Right pack
    does 1 & 4. But they can go no other way due to the lead lengths.

    Connected all back up engine running better but still rough at idle, once
    the engine is hot, its runs perfectly, but the Check Engine light is still

    Is there a way to read the codes without a reader? Or take a trip to the
    garage next week and see if they will read them for me.
    TheDragon, Sep 19, 2009
  6. TheDragon

    TheDragon Guest

    Have you tried reading the OBD codes? See

    Once I fixed the pool of liquid in Cyl 4 by fitting caps to the spark plugs,
    and running on 4 cylinders again. I removed the battery -ve lead for 5 mins.
    Check light has now gone out.

    Seems on this car even though the fault is clear, the light remains on till
    code is erased.
    Car runs ok when cold too now.

    The sensor issue on the to right of the engine has been repaired too, the
    connector plastic had become brittle and disintegrated. So just removed it,
    and put the 3 pins directly to the connector pins and surrounded the join
    with tape.

    Still no idea what it is, but its needed else the engine stalls if its on
    the wrong way round.

    TheDragon, Sep 19, 2009
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