finished conversion ,wont start ! please help

[rsweeney 40]

just finished , swapped engine loom , relays , ecu and immobiliser box.

when it was a gti the only way the ignition could be turned on is by pressing the fob.

Now the fob only locks and unlocks the car, and doesnt do anything to the ignition!

please help!

[Vw_owner 1]

ahh nightmare, rather you then me lol ,

i remember on my mk4 golf when my m8 was programming my keys he told me that theres a ring/sensor by the ignition barrel that picksup the signal from the key chip, have you swapped over this sensor from the old car? . one of my options was to remove my key chip and tape it to the sensor that way i didnt have to programme new keys to my ecu but we did it the right way and reprogrammed all my keys together.hope you get this sorted, must be itching to test drive it

[rsweeney 40]

ah, ring sensor? not the immobiliser box?

and yeah so bloody close !!

[Vw_owner 1]

not sure if its the same bud but there needs to be a sensor close by the chip in the key for it to read it then send that info back to the ecu and give it the green light to run, strip the old steering colomn trim off the old car and have a good butchers around the ignition barrel to see if theres a sensor looking thingy i think there called immobiliser pickup rings

[rsweeney 40]

yeah got it,but isnt it just as good to have the chip inside the key rather than attached to the ring ?

[Vw_owner 1]

looking at this mk4 immobiliser setup, looks like the sensors built into the ingnition barrel, the mk3's might be different? but then they might be similar, have a look if theres a plug going to it,

http://www.ebay.co.uk/itm/97-04-VW-GOLF-MK4-BARREL-KEY-TRANSPONDER-AND-ECU-/300607620292?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item45fd9c44c4

[Vw_owner 1]

yeah got it' date='but isnt it just as good to have the chip inside the key rather than attached to the ring ?

[/quote']

ah sorry no that was for my car and not relivant to yours, basicaly i only had one key for my golf and i wanted another but i didnt want the hassle of haveing to get my keys reprogrammed so one easy option i had was to remove the key tarnsponder/chip and tape it or stick it next to the pickup sensor thing by the ignition barrel, that way i can have multiple keys cut and they wouldnt need programming, but that also has a security risk so i got my m8 on his laptop with vagcom to wipe my key and reprogramm them all together.

[rsweeney 40]

ah im with you didnt read it right , just asking a guy on here about whether i need to change ignition barrel so it works with immobilizer box.

[Vw_owner 1]

you see the ring thing at the top by the immob box? i wander if thats what the sensor is???? http://www.ebay.co.uk/itm/VW-GOLF-MK3-MK-3-GTI-FULL-LOCK-SET-ECU-TRANSPONDER-LOOK-037-906-025-H-/120803097208?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item1c206cfa78

[rsweeney 40]

yeah thats it , do i need to change it ?

[Vw_owner 1]

im not 100% but have a look what your original car had it might be on a different frequancy or something idk, to be on the safe side i would swap everything to do with the immobiliser from your original vr6 into the gti. also the gti had an aftermarket alarm which might be tapped into them wires??????

[rsweeney 40]

swapped but still no ignition lights.

you'd know that to start the gti you had to use the fob - when i go to do start it and use the fob it just locks the car - where it used to turn ignition lights on

[UnitedMotorsport 55]

Did you cut any wires when you took the old engine loom out?

When you say fob, what fob do you have? Is it an aftermarket alarm/immobiliser.

The standard immobiliser system has no control on dash lights or control over switched live.

[Vw_owner 1]

^ yea it is an aftermarket alarm, i owned the car for a week as i had it given by a m8 who didnt want the hassel of selling it,then i sold it to mr sweeny for the conversion, didnt realise you left that alarm in dude, prety sure the only way to sort this out is to trace all the aftermarket alarm wires back and remove them back to how it should be.

and yea i remember you had to to turn ign on then press the button on fob then fire it up, maybe it might work if your not doing it in that order? , damn must be an absolute ball ache!!!!!!

[cbmotorsport 0]

The ring you are talking about is a reader coil that picks up signal from the transponder chip in the key. If you swapped the chip/ key , immobiliser box and ecu the. The fault is not that. It is the aftermarket alarm causing you problems . You will need to trace wires that have been cut for the alarm and rejoin them . They will be colour coded.

[rsweeney 40]

yeah removing alarm systmem this week , absolute pig. how many wires am i going to have to disconnect then connect to originals and how hard is it to do ? dash out job or can i do it with it in ? cheers guys

[cbmotorsport 0]

there could be anything from 2 wires to 15 wires depending on what the alarm is designed to immobilise. by the sounds of it , its switching the main ignition live feed to the ignition switch,and probably the red/black pin 50 to the starter motor mate. you can do with the dash in, but remove steering coloumn shrouds and lower dash from drivers side to make life easier.oh and dont cut more than one wire at once so you dont get confused hope this helps.