GTI cutting out, oil light flashes

[big mat]

I've done a few posts here about my 96 8v and here's an update!

I have replaced these so far:

1. ECU relay (30)
2. Fuel pump relay (167)
3. Another of the obvious relays (58???)
4. New throttle body and vacuum hose
5. Engine speed sensor/crank angle sensor (its the same thing)
6. Fuel pump which includes lift pump/swirl pot (vw mechanic with 30 yrs experience said this could be it)
7. Dizzy cap
8. New cambelt (not really relevant but it was due for it but timing is fine so its not the belt/tooth problem)

And... ITS STILL DOING IT!!! Bas***d thing.

Remeber the advertising slogan in the 80's/90's. It went "If only everything in life was as reliable as a Volkswagen" Thank God its not!!! We would have topped ourselves!!!!

VW stealership can find nothing. And I'm running out of ideas. Anybody got any? I'm thinking its coming back to something electrical. I read on here about the oil pressure regulator can fail and tell the car to switch off.

Cheers
Mat

[oneblueleg]

I'm not sure I should say this... and I know it's going to tempt fate, but I think the ECU relay has solved my problem, though it's only been a week or so... it's looking promising...

[EvilScotsman]

Its a slim possibility but something no-one has looked at so far for cars that dont respond to the usual fixes - is the immobiliser. The VW one built into the ecu.

I wonder if someone who's car does this got it scanned right away by vag com or something would have gotten an "engine start blocked" code from the ecu? Just thinking outside the box lol, I read a post on a US site from a guy who instrument cluster (later VR6's etc) has the transponder in it and was intermittently causing an open circuit and triggering the immo. Another had a low signal from the chip in the key (all gti / vr6) and the car wouldnt start.

I x-rayed my key at work an it has a small chip the size of an anadin capsule at one edge of the plastic bit. Its read by an inductive wire loop round the ignition barrel. If that wire is moved off the barrel or breakes or unwinds it wont work or will be intermittent too.

[Mr Blue]

I had this problem

Changed the Relay for a later white one....

still had cutting out problems. Changed the crank sensor (or pulse sensor). The wires were broken!

VW charged me £113 for a new one on trade! still flippin expensive

You have to take off the engine mount bracket which longs your life out abit

Old against the new pulse sensor..




EDIT: went out for a long drive and it has not cut out yet (thank God)

[bsting]

Nice one. My 8v AGG is running as sweet as it will ever get, no issues for weeks now 
The idle is perfect.

A 16v ABF is going into her at the moment (I planned to do this months ago) and got a complete doner car in 06.

The 8v is going in the doner (a 5dr GTI)

For those that are still having cutout issues (and have replaced all of the above) if you have a second key (later OBD2 chipped ones) try that for a while. It may be an immobilizer problem....

Hope it helps

[oneblueleg]

I'm not sure I should say this... and I know it's going to tempt fate, but I think the ECU relay has solved my problem, though it's only been a week or so... it's looking promising...

Still going well... crosses fingers... ECU relay... yey!

[weasel]

How much of an arse is the crank sensor to get out? is it like those ABS sensors and shear the head of the bolt, then snap half the sensor off in the engine, or do they come out fairly easy?

[firstgolfgti]

I've been reading this thread with great interest.

My Golf GTi 8v ADY engine has been doing the same thing and am now unable to drive without it breaking down. Could some one tell me is the crank sensor also known as the Knock Sensor. Because I can't find anything about the crank sensor the Haynes manual.

The cars currently at my local garage, they've changed most things but at no cost as they have a supplier who credits them if the items don't cure the fault - nice.

The list of items that have been changed/tested by myself or the garage

1. Fuel Pump Relay
2. ECU Relay
3. HT leads
4. Spark Plugs
5. Earthing Points
6. Ignition Coil
7. Hall Sensor
8. ECU has been tested nothing nasty found

Might take the spare key up there see how they get on with that.

[Mr Blue]

hi mate

the crank sensor is also known as the pulse sensor. Yours is deffo nackerd and is causing this problem

try EURO PARTS for this as they are way cheaper than VW

[Mr Blue]

How much of an arse is the crank sensor to get out? is it like those ABS sensors and shear the head of the bolt, then snap half the sensor off in the engine, or do they come out fairly easy?

you need to remove the front engine mount bracket so need at least 2 jacks. one to lift the car and the other to support the engine while the bracket is out. The sensor is behind this bracket and is held in by an allen key which is likely to round.

the engine mount bracket has the flippin starter motor attached (yay )  The bolts go through the starter motor and into the bracket.


hope that helps. im crap at explaining