Diagnosis Help! Immobiliser Problem?

[davinjones]

I need help diagnosing a problem with my R33 Series 2 skyline.

Every now & then the car just shuts off while I am driving. Engine cuts off & when I come to a stop and try to start it again it turns over ok, but will not start.

After a few minutes it is able to be started again.

The mechanic noticed that when it happens, the lights on the dash dont come on when the ignition is turned to ON, which point towards the immobiliser playing up.

The auto electrician suspected a faulty ignition switch, so it was replaced. The battery was also old, and so was replaced with a bigger battery just in case it had something to do with it. This was done after the first two times, and now the problem has happened again. Ruling out those things as the cause.

Things i have noticed about the 3 occurences (not including the times the mechanic got it to happen):

- It has happened within 5 minutes of starting the car.

- First two times it happend turning into the exact same driveway of the same train station.

- All three times it has happend when I have been turning right (3rd time was a big intersection right hand turn, first 2 into the train station driveway).

I realise this is most likely a fault with the immobiliser, but i dont want to have to replace the whole system if not necessary, and especially if its not the cause.

Any help would be very greatly appreciated!!

[ELMOHASA33]

so it has a after market imobiliser ?

do you have keyless entry? if so have you tried takin keys out of ignition and cycling the locks then start?

[davinjones]

so it has a after market imobiliser ?

do you have keyless entry? if so have you tried takin keys out of ignition and cycling the locks then start?

Yes it's an after mark immobiliser.

It was a 3 point immobiliser from Brant car alarms, that's about all i remember.

Doesnt have keyless entry.

The problem isnt when i initially start the car, it starts up fine initially, and then it cuts out while im driving, and then for a few minutes after that it cranks but wont start.

[eeiko321]

Yes it's an after mark immobiliser.

It was a 3 point immobiliser from Brant car alarms, that's about all i remember.

Doesnt have keyless entry.

The problem isnt when i initially start the car, it starts up fine initially, and then it cuts out while im driving, and then for a few minutes after that it cranks but wont start.

your best bet is ringing Brant's car alarms....

but in the meantime.. try resetting the alarm....by Dsiconnecting the battery for 2 minutes......

sometimes this can resolve few issues....

[ELMOHASA33]

yeh mate best bet ring brants or take it to a better auto lec not to bag the bloke you already took it to but thats pretty easy to fix he could of at least disabled it for you until ya got the chance to take it back to brants sorry but i just dont go much on mechanics who claim to know bout late model cars "then they just throw parts at them until its fixed its just a waste of your time and money"

[davinjones]

Thanks guys...

Yeah I spoke to brant and they are going to take a look at it, and seem pretty confident they will be able to fix the problem.

[Turbz RB-25]

dude, I had a VERY simular problem like 1 week ago, I was prepared to launch my car off a cliff!!!

My dash lights didn't turn off however.

You can try the following things:

1) AFM

2) Fuel Pump

3) Harnesses to sensors

4) Ignition control Module

5) Crank Angle Snsor

Good luck with it mate, mine turned out to be a loose connection in the AFM.