Immobiliser problems

  1. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #1
    Right i've just taken the engine out of my 2000 plate vtr, with 1 plug ecu and fitted a 2003 vtr engine with 3 plug ecu (obviously swapped the engine looms over). I've also swapped the ignition barrel, transponder ring and immobiliser box over from the newer vtr to mine.

    When i switch the ignition on everything comes on as it should, however the immobiliser light on the dash just flashs when you try and turn the engine over and it won't start.

    Can anyone help me out with this? Can't see where i've gone wrong?
  2. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #2
    The ecu is locked you got something wrong somewere, as if its the original immo for that ecu it will unlock it.
  3. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #3
    This is what i can't work out, the newer vtr started fine before i took the engine out. Then today i've swapped all the immobiliser box and transponder ring etc over onto my car, connected the battery, and gone to turn it over, but all it does is keep turning and not firing and noticed the immobiliser light keeps flashing?!
  4. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #4
    I take it when the ignition is switched on, the immobiliser light should come on then go straight out again? showing that the immobiliser has been switched off?

    when i switch the ignition on i can hear the fuel pump prime and also hear the fuel pump ecu, under the main ecu, click after a couple of seconds when the ignition is switched off.

    so does this look like the ecu has locked itself for some reason?
  5. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #5
    Am i right in thinking that even if the ecu has locked itself for some reason, as i have everything from the original car fitted (immobiliser box, transponder ring etc), then it should unlock itself again if i can reset the ecu?

    I've not disconnected the battery for the night (getting a wee bit cold in the garage , so i'll leave it disconnected til tomorrow night when i get home from work.

    If anyone can shine any light on this, it will be much appreciated?
  6. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #6
    Well you done something wrong mate you not got immoblisers mixed up?
  7. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #7
    yeah i did think that myself but no its definitely the right one lol. If the ecu has locked itself, will it unlock having all the right immobiliser bits present? Or once its locked, its locked?
  8. Established Member Joined: Dec 2009 near manchester Posts: 1190 vtr'd FURIO....
    #8
    Try to wiggle the ignition pick up ring first
  9. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #9
    i did try wiggling it but when i reconnect the battery tonight i will try that again
  10. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #10
    Yerr if its the immoboliser for the ecu it will unlock 100% i know because i locked mine when i did conversion forgot to plug immo in and key light was flashing, plugged immo on fired up first time.
  11. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #11
    Right tried it again tonight and no different, tried wiggling the transponder coil and doesn't make any difference, the immobiliser light still flashes

    After reading a few old posts i've read how if the ecu is left powered down for a while it can lose its programming, and the car has been sat powered down for a while before i got round to fitting it into my saxo, does this sound quite probable?

    If i were to get my ecu unlocked, would i then just remove the immobiliser box and transponder coil and it should (by rights) start up?
  12. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #12
    if however this doesn't sound right that the ecu would lose its programming and codes, then the only thing i can think is that the transponder coil has gone, as i've checked everything in the engine and all of the loom is wired up, including all earths etc.
    Done a few engine changes in the past, but usually on older cars, so don't have immobiliser issues lol.

    As already said, any help is appreciated.

    If i were to get the ecu unlocked, as already asked, would that mean i could remove the immobiliser box and transponder coil? Not too worried about running the immobiliser, as the car will mostly be used a track toy, but could always see about a decent aftermarket one eventually
  13. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #13
    If you want your ecu unlocked i can do it, and no you wont need the immoboliser no more, i also got a vtr unlocked ecu you can buy.
  14. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #14
    How much mate to unlock mine? its a 3 plug VTR one (think i said that in the first post lol), or how much do you want for your 3 plug VTR ecu?
  15. Saxperience Post Whore Joined: Nov 2010 Kent Posts: 8439 Gen 7 Celica 190.
    #15
    Pm me your number mate.
  16. Infrequent Poster Joined: Nov 2004 Lincolnshire United Kingdom (England) Posts: 212 2000 Citroen Saxo VTR 1992 VW Corrado G60
    #16
    PM sent