idle problem

  1. Regular Poster Joined: Jul 2011 Kent Posts: 287 Mk1 Saxo VTR
    #1
    when on idle it sometimes feels like the revs go up and down slightly but doesnt register on the speedo. could this be timing belt or what? thanks
  2. Frequent Poster Joined: Jan 2010 Newcastle Posts: 526 BMW E46 Touring Breaking VTS
    #2
    Give the ICV a clean?
  3. Established Member Joined: Feb 2011 Rochdale Posts: 1896 mk2 saxo 1.4 furio in possi blue
    #3
    would show on the dials though if it was icv wouldnt it?
  4. Infrequent Poster Joined: May 2011 Cwmbran, South Wales Posts: 248 Saxo 1.1
    #4
    Quote:
    Originally Posted by mcjacko1987 View Post
    would show on the dials though if it was icv wouldnt it?
    sure would matey
    1 user thanked this post:
  5. Frequent Poster Joined: May 2010 Hatton, Derby Posts: 821 BMW 328 M sport
    #5
    Coil pack, spark plugs, fuel filter

    Anyone of those, mine does it and my coil pack is knackered
  6. Established Member Joined: Feb 2011 Rochdale Posts: 1896 mk2 saxo 1.4 furio in possi blue
    #6
    unless the icv is playing up but at the same time the throttle position sensor (TPS) is playing up too. that way the icv is idling wrong now and again but the TPS isnt registering it
  7. Saxperience Post Whore Joined: Aug 2010 Little Mill, South Wales Posts: 7547 Mondeo ST TDCI Saxo VTS
    #7
    Wouldn't register on the speedo as the car isn't going anywhere (would on the rev counter however), cleaning your ICV is a good start but theres many other things that can cause this:

    MAF Sensor
    Temp Sensor (Green One)

    To name a few
  8. Frequent Poster Joined: May 2010 Hatton, Derby Posts: 821 BMW 328 M sport
    #8
    Sorry should have read it better, clean the ICV as the first port of call, then my money would be on the temp sensor
  9. Regular Poster Joined: Jul 2011 Kent Posts: 287 Mk1 Saxo VTR
    #9
    i meant rev counter sorry and will try all of these
    thanks