lumpy cold idle..

  1. Established Member Joined: Oct 2009 Birmingham Posts: 2073 Current - 56 1.9 astra Sri Owned - 54 C2 GT. Ow
    #1
    righttt got a small problem nothing really major but is rather annoying, recently when starting my car from cold its kinda lumpy dont always do it but has done it a few times now, the revs dont seem to rise or drop but can feel its not running right dont seem to do it once engine is warm, it kinda sounds like its been camed and not been mapped lol,

    two things could think could be a temp sensor? or the heater element in the lambda, anyone else got any suggestions to what could be....
  2. Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.
    #2
    You`ve partly answered your question mate lambda sensor coolant temp sensor are 2 a dirty ICV can also cause it as well as a MAP sensor.

    Steve.
  3. Established Member Joined: Oct 2009 Birmingham Posts: 2073 Current - 56 1.9 astra Sri Owned - 54 C2 GT. Ow
    #3
    Quote:
    Originally Posted by stevo67 View Post
    You`ve partly answered your question mate lambda sensor coolant temp sensor are 2 a dirty ICV can also cause it as well as a MAP sensor.

    Steve.
    yeah yeah i guessed the first two would probs have somthing to do with it, just wanted to know if was any others could be.
    can you clean the map sensor?
  4. Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.
    #4
    Quote:
    Originally Posted by Gazer View Post
    yeah yeah i guessed the first two would probs have somthing to do with it, just wanted to know if was any others could be.
    can you clean the map sensor?
    No idea if you could clean a MAP sensor mate.


    Steve.
  5. Established Member Joined: Oct 2009 Birmingham Posts: 2073 Current - 56 1.9 astra Sri Owned - 54 C2 GT. Ow
    #5
    Quote:
    Originally Posted by stevo67 View Post
    No idea if you could clean a MAP sensor mate.


    Steve.
    oh okay nice one