Cx 25gti auto lumpy tickover
  • Register
  • Help
Results 1 to 5 of 5
Like Tree5Likes
  • 3 Post By UFO
  • 1 Post By johnmowcop
  • 1 Post By Bruce Llewellyn

Thread: Cx 25gti auto lumpy tickover

  1. #1
    Tadpole
    Join Date
    Mar 2015
    Location
    United Kingdom
    Posts
    13

    Default Cx 25gti auto lumpy tickover

    Help anyone please.

    Advertisement


    Tickover at 1000rpm lumpy, any slower it will cut out. When reverse selected it cuts out unless I keep revs on with right foot on throttle and left on brake.

    Recently had trouble with the big blue solenoid, cleaned connections now it starts ok (thanks to this forum for that). Not sure if this is connected to the above.

    Regards

    JohnT

  2. #2
    UFO
    UFO is offline
    CitroŽn Tragic UFO's Avatar
    Join Date
    Aug 2001
    Location
    Gerringong, NSW, Australia
    Posts
    9,721

    Default

    It will be a leak in the engine air intake. Look first at the concertina hose from the air filter to the intake manifold. It may have a radial crack in it. Can usually be easily repaired with wide duct type tape (eg uber wide electrical tape) OR the jubilee clamp where that hose connects to the intake has become loose.

    When you change into reverse the engine moves backwards on the mounts and that's just enough to pull the hose a little bit and the manifold gets too much air and the engine stalls.

    Also take the opportunity to look at your engine mounts as the engine may be flopping around on worn upper (dogbone) or lower mount.
    JohnW, Greg C and johnmowcop like this.
    Craig K
    2009 C5 HDi Exclusive

  3. #3
    Tadpole
    Join Date
    Mar 2015
    Location
    United Kingdom
    Posts
    13

    Default

    Thank's UFO.

    Checked this and found that when messing with the blue solenoid I had disconnected the air hose to the inlet manifold and not reconnected it properly. Did'nt realise sucking air at that point would cause the problem, Why is that anyone know?

    JohnT
    UFO likes this.

  4. #4
    Fellow Frogger! Bruce Llewellyn's Avatar
    Join Date
    Oct 2011
    Location
    Toowoomba
    Posts
    647

    Default

    Yes,

    The airflow sensor is upstream of the hose, and a leak means the engine is getting more air than the computer thinks it is so doesn't give sufficient fuel.

    Bruce.
    UFO likes this.

  5. #5
    Tadpole
    Join Date
    Mar 2015
    Location
    United Kingdom
    Posts
    13

    Default

    Thanks' for the response Bruce.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •