VTS missfire, bogging down

1. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #1 7th April 2011, 20:25

   My 16v has been giving me alot of trouble and i cured it once by replacing the lambda but its back, it will run but very lumpy and when it revs its got a missfire and obviously when you drive it it bogs down and has no power, the missfire clears after around 3k. Any ideas people??
2. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #2 7th April 2011, 20:46

   Anyone????
3. Nick_j_r Regular Poster Joined: Feb 2011 Ruthin North Wales Posts: 308 Saxo VTR, 205 CTI S16

   #3 7th April 2011, 21:07

   exhaust leaks? remove throttle body and clean so its spotless, remove all sensors and clean so there spotless, check spark plugs, plug into diagnostic? try another coil pack? all i can think of at the minute hope it helps
4. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #4 7th April 2011, 21:18

   Iv tried all that dude lol
5. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

   #5 7th April 2011, 21:45

   hmm wierd it must be gettin fuel anyway if its goin after 3000rpm
   check for any air leaks in the inlet manifold/check the idle control valve to give it a clean.
   cant be much
6. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #6 7th April 2011, 22:10

   Iv tried all of that and now lost for reasons.......
7. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #7 7th April 2011, 22:11

   Its had a hole throttle body off a running vts that had been rolled, 2 lambdas, map sensor, fuel filter...................
8. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

   #8 7th April 2011, 22:13

   are all the injectors fine and firing correctly?
9. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

   #9 7th April 2011, 22:24

   I cant be 100% sure on them, is there anyway i could find out??
10. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

    #10 7th April 2011, 22:26

    hmm, theres a place on here that cleans them for £45 i think i would give them a shout, and i would check ur wiring loom to could well be a wiring problem 2
11. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

    #11 7th April 2011, 22:31

    Iv put another injector loom on and checked basically the hole engine loom and it all seems fine. The injectors seem ok to behonest as you can hear them all quirt but i guess one could be blocked abit but the way its running i doubt a partly blocked injector would cause it to be that bad. I really am lost to what to try next.... iv tried every sensors and a regulator, pump, ecu.............
12. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

    #12 7th April 2011, 22:34

    have you done a compression test on each cylinder?
13. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

    #13 7th April 2011, 22:37

    Yep thats all fine, it had a headgasket just under a year ago aswell so it shouldnt be that. Iv put new plugs in and tried another coil too, crank sensor. You got anymore suggestions on other sensors i may have missed?
14. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

    #14 7th April 2011, 22:39

    map sensor?
15. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

    #15 7th April 2011, 22:41

    Tried that one lol. Iv tried:
    x2 lambdsa
    Map sensor
    ICV
    Position sensor
    Air temp sensor
    Crank sensor
    Engine temp sensor
    Ecu
    Fuel pump relay
    Fuel pump
16. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

    #16 7th April 2011, 22:42

    where u get the icv?
17. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

    #17 7th April 2011, 22:56

    From a written off 02 vts, i got the hole throttle body with all sensors on and took them off and cleaned up then fitted.
18. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

    #18 7th April 2011, 23:16

    how did u install the icv?
19. citroen_saxo_vtr Saxperience Forum Bum Joined: Mar 2006 Norwich Posts: 2823 Vectra sri 2.6 v6

    #19 7th April 2011, 23:20

    What do you mean by install?
20. kyle4256 Established Member Joined: Feb 2008 dundee Posts: 1844 saxo vts

    #20 8th April 2011, 08:21

    there is a method to install the idle control valve after fittin it