vr6 conversion wiring

[sythesy]

can any one help me with my wiring,it stared off as a 1.4 so every thing is running off one loom.all i have is the vr6 loom (ecu side?)
havent got a clue myself any help greatly recived

 

[raddo-dave]

its all straight plug in, i would also use the vr6 head light loom

 

[sythesy]

all lights work,it turns over but no fuel or spark ???????????????????????will have to get a volt meter

 

[sythesy]

does the ibiza have some sort of immobiliser its on a 99 V reg this would explain the no fuel and no spark

 

[suj]

most do mate, i think there's a thread about disarming the immbo on here

 

[CraigW]

its all straight plug in, i would also use the vr6 head light loom

Now I like the sound of that. would make the job much easier.

 

[Cupra Kid]

Yes they do have immobiliser, its coded between the key and the ECU, so if you've stuck a new ECU in then the codes won't match and it won't start.

 

[raddo-dave]

i put the vr6 ecu on and it started straight up so i presume the immobiliser is on a seperate control unit behind the dash

 

[raddo-dave]

are u using obd1 or obd2 vr6 engine???

 

[sythesy]

im using the obd1 it had no chip on the vr6 key

 

[raddo-dave]

did u put all the relays from the vr6 into the ibiza fusebox???

try relay 109 i think its the relay for the ecu

 

[sythesy]

i have now,but it still has no fuel or spark.any more ideas on how to disarm the immobiliser isearched on here but couldnt find anything

 

[raddo-dave]

have u used the vr6 ignition barrel?

i just stuck with the ibiza key and barrel

only other thing i can think of is did the vr6 loom have an aftermarket alarm/immo on it?

 

[Fl@pper]

back to basics then

first things first - ignition on is the fuel pump priming at all ? With no engine or motor loom in at all by connecting the battery up with the ignition on i should get a small burst of fuel at the very least

 

[sythesy]

it did have an alarm but nothing was conected to the loom when i took it out it was a cheap do it yourself alarm
and can you always hear the pump prime

 

[raddo-dave]

if u take the back seat up u should be able to hear it nice and clear

 

[sythesy]

am i right in saying the fuel pump needs a permanant earth ?

 

[Fl@pper]

just had a quick scan at my wiring scribble notes from when mine was playing up

pin 4 / Brown wire = earth

pin 1 / red-yellow = +12v from fuse18 (20a)

remove the fuel pump relay and put +12v down pin 4 to hear it run continuosly to test