mk2 vr6 idle problem

[DAN-F]

just put a 97 mk3 vr6 engine into a 90 16vgti, used complete mk3 loom, car starts for a split second then dies, anyone know what the problem could be??

[mk2bal]

I'd say an immobiliser issue? Are you using key and transponder etc?

[DAN-F]

yea using key and transponder from the mk3 all the wiring is there, surely it wouldnt start at all if it was an immobiliser problem??

[Wayne]

yea using key and transponder from the mk3 all the wiring is there, surely it wouldnt start at all if it was an immobiliser problem??

Nope it will start then cut out.

[DAN-F]

so its def an immobilser fault then, ive taken the loom from the mk3 complete and plugged it back up exactly the same way, is there something that needs changing when fitting into a mk2?

[JamesS]

I would get the ECU de-immobilised by Unitedmotorsport. Recommended over on the mk2vr6 forum. Because power to ECU went and things were unplugged it has probably reset itself or some other weird electronic wizardry has happened.

United Motorsport
0844 3576 174
Sales@Unitedmotorsport.co.uk

Give them a ring

[Diamond Hell]

There's very little 'weird electronic wizardry' that can take place. 

so its def an immobilser fault then, ive taken the loom from the mk3 complete and plugged it back up exactly the same way, is there something that needs changing when fitting into a mk2?

Did you get the immobiliser box, key and transponder loop from around the ignition lock?

If not that is why is won't run - no go code from the immobiliser box.