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Z3 1.9 Rough idle after start up

Discussion in 'Z3 Roadster & Coupé' started by alan36, Dec 7, 2011.

  1. alan36

    alan36 Newbie

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    After I fitted a new thermostat to the car last weekend when I start it from cold now it runs really rough for a minute or two. It used to start no problem at all and now sometimes it actually cuts out unless I rev the engine.

    What could this be peeps.

    Alan
     
  2. Brian H

    Brian H Zorg Guru (V)
    British Zeds Scottish Zeds

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    Alan,

    The cam sensors are prone to failure which will cause rough idling and stalling. The sensor is easy to fit but it may be worth getting a code reader to hook up to the car to see if there are any error codes.

    Is your engine a M43 or M44?
     
  3. alan36

    alan36 Newbie

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    How much are they and are they BMW only
     
  4. r37

    r37 Dedicated Member

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    sensor here £70 inc vat

    instructions here (for a 1.9)

    EDIT: or here for only £40 inc vat
     
  5. clairemad

    clairemad Regular Member

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    dont waste any time getting cheapy sensor like I did its just a waste of time and money :ymblushing:

    Get a BMW one mine cost me £97
     

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