SLK 200 R171 Starting Problem

Discussion in 'Engine' started by Stevo2800, Jul 15, 2016.

  1. Stevo2800

    Stevo2800 New Member

    Messages:
    1
    Joined:
    Jul 11, 2016
    Car:
    R171 SLK 200
    We bought an 06 SLK 200 with 117k miles on the clock in October 2015. Since April 16 we have had intermittent starting problems which neither our independant (MB trained) mechanic nor an MB main dealer have been able to trace.

    All the electrical services appear to work as they should when the key is inserted and turned. In the start position the engine always cranks over and usually she starts straight away.

    On odd occasions however, she cranks over but does not start. It may take 2, 3 or 4 attempts. After leaving her for a while and trying again, she may start ok, or not.

    Sometimes she starts but cuts out after a few seconds as the revs drop. Pressing the throttle does not prevent this.

    Some times she fires on 2 or 3 cylinders for a bit before cutting out.

    Once she is running she pulls strongly without any hint of misfire and is a joy to drive.

    On one occasion only she cut out while changing down to turn off a fast A road onto a pub car park.

    So far, the prevous owner has changed the fuel pump, and we have changed the battery and the crankshaft position sensor.

    The fault codes noted by our mechanic are:

    2061-001 alternator serial interface
    201F-002 cooling fan fault
    2027-001 battery voltage too low (P0562)

    But the battery always holds charge, and she never runs over temperature.

    Over to you guys. What can we do next?
     

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