Important! : 16v bad idle,hunting with video

1. Aaron Saxperience Post Whore Joined: Jan 2008 ..... Posts: 5231 ..............

   #1 1st April 2011, 17:48

   16v jp4 engine.
   
   first start it started up and didnt idle at all! only ran when accelerator down.(2k revs)
   
   since then ive changed
   icv, tps,map,crank,lambda,knock.
   
   When i changed crank the engine idled.
   
   But very bad as video shows.
   Now ive checked injectors which are all firing.
   spark plugs for spark which is very good.
   Coilpack is fine too!
   
   What can it be?
   
   Ive checked timing
   and its correct
   
   heres video
   
2. seddon89 Frequent Poster Joined: Jul 2010 gateshead Posts: 807 vw golf GTI citroen saxo forte 02 plate vw polo

   #2 1st April 2011, 19:27

   has it got a vacuum leak on the intake?
3. Aaron Saxperience Post Whore Joined: Jan 2008 ..... Posts: 5231 ..............

   #3 1st April 2011, 19:32

   Nope.
   the hose is from the inlet to servo is in & is fixed....
   my brake lines arent in MC though
4. seddon89 Frequent Poster Joined: Jul 2010 gateshead Posts: 807 vw golf GTI citroen saxo forte 02 plate vw polo

   #4 1st April 2011, 19:36

   the brake pipes wont affect it mate, there aint a split in the servo pipe is there, has the manifold been off?
5. Aaron Saxperience Post Whore Joined: Jan 2008 ..... Posts: 5231 ..............

   #5 1st April 2011, 19:40

   no split no. ive checked. sprayed wd40 to check for any leaks.
6. seddon89 Frequent Poster Joined: Jul 2010 gateshead Posts: 807 vw golf GTI citroen saxo forte 02 plate vw polo

   #6 1st April 2011, 19:44

   wd40 wont really show a leak mate, is there any other vacuum pipes
7. Railroader Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx

   #7 1st April 2011, 19:58

   What did you do just before the problem started? it looks like you've been mucking about with it. Did you reset the ICV when you installed it? That means switching ignition on and off a few times.
8. malcanator L-plater Joined: Nov 2010 Posts: 47

   #8 2nd April 2011, 18:27

   Sounds like an issue i had a few years back with one of my vts's,
   That turned out to be the lambda sensor in the manifold,
   The heating element had packed up and it wasnt getting to the operating temperature, is it better when the cars warmed up.
9. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #9 2nd April 2011, 18:39

   ecu???
10. kristel10589 Saxperience Post Whore Joined: Feb 2007 Posts: 5362

    #10 3rd April 2011, 18:04

    ICV is obv ok as it is letting the engine rev, just not constant.
    Won't be a air/vacuum leak as the engine will just rev high with the extra air being let in.
    
    How much charge has the battery got? Alternator working ok to charge the battery?
    
    Soapy water is best for checking leaks.