GolfGTIforum.co.uk

General => The garage => Topic started by: natty3105 on 11 March 2011, 09:48

Title: mk3 gti 16v cuts out after 30mins of driving
Post by: natty3105 on 11 March 2011, 09:48
Hi
I've just bought a golf gti 16v 1996 and i had it 2 adys and i was driving along and and she cut out on me the revs went mad then she just cut out .
Then she would not start.
But after a while of sitting still she might start or might not .
It tokk me 2hours to drive 10miles
So if anyone can help i would be greatful.
I noticed trough looking on here that people have had the same sort of problems as i have so i have already changed the rotery arm and the dizzy cap and 3 of the relays .
please help
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: rubjonny on 11 March 2011, 10:41
crank sensor would be my first guess
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: natty3105 on 11 March 2011, 20:14
thanks
That was going to be the next thing that i tried
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: DECKED-MK3-DUB on 13 March 2011, 00:02
Didnt the 16 v suffer from dizzy units ? as in the whole distributar not just the cap and arm etc.... or was that the 8 v ??
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: richw911 on 13 March 2011, 17:58
crank sensor would be my first guess

+1 or fuel pump relay
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: rubjonny on 14 March 2011, 11:18
if you suspect the dizzy you can just unplug it, ecu will fall back to batch fire mode but run perfectly fine
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: pompeydjb on 07 April 2011, 18:13
 :sad:
My Golf 3 16v is dead same problem
I have changed the
dizzy cap
leads
the dizzy
plugs
air mass meter
crank sensor

mine also has a flashing oil light im at the end now if its not fixed soon its off to the scrap yard its been a year now

and i changed the fuel pump relay

Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: danny_p on 07 April 2011, 19:37
16v dosent have an air mass meter.   
Title: Re: mk3 gti 16v cuts out after 30mins of driving
Post by: Bassman Rob on 18 April 2011, 22:47
Just a thought on this one. I had this same problem and checked all the usual.

In the end, I discovered that it was the quite expensive after market immobiliser that was fitted in the car. I think there were three areas where the power could get cut from. Two I found were the main fuseboard under the driver dash for + which was a thick wire. The immobiliser circuit that had failed was wired to the sense circuit for the fuel pump relay. It was by pure chance I found the immobiliser unit being 2-3" long and roughly 2" in diameter and bolted up under the dash/steering wheel area. the unit felt very hot so thought something might be up with it although it worked fine and incidentally does if it's the fuel pump relay cut off circuit.

To check, I removed the fuel relay, made a thick wire of 4 inches in length as it has to handle quite a current, and crimped a 3.8mm spade terminal on each end. Then I twisted the spade terminals a bit so they were slightly bent and that way they stayed in and on the fuseboard when I plugged the spades into the terminals where the big relay spades go. The other two smaller pins on the relay are the sense circuit. I left those for the time being.

The car ran perfect and did not cut out after 20 mins.

For good measure, I made up test light and wired that into the sense terminal holes where the relay would go. Sure enough the light went out after 20 mins drive and would come on again after 5-10 mins. I knew then that the immobiliser was at fault so I rewired the two fuel relay sense wires directly to the fuseboard and just taped up the immobiliser wires out the way for that circuit.