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Author Topic: 2003 TDI Auto Still stopping intermittently!!  (Read 572 times)

Offline bigjeeze

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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
  • Region: South West
  • Country: United Kingdom
2003 TDI Auto Still stopping intermittently!!
« on: July 21, 2019, 11:36:18 AM »
Hi Guys,

This fault is driving me nuts! It's just cost me £15K!!! ( I had to buy the Mrs a new car!!!)  When working correctly everything is fine, but on the odd occasion with no warning the engine just stops. It sometimes starts almost straight away but can also turn over and not start so that the battery runs flat.  I have removed and checked the pump in the fuel tank - No blockages and appears to be running OK. I have replaced relay 109 twice now and still the fault appears.   Any ideas? Where to look - I have no ideas left!.

BJ
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Offline johnnyroper

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  • Posts: 2693
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  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #1 on: July 21, 2019, 01:55:07 PM »
Have you ever changed the crank sensor?

Offline brianh

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  • Model: Galaxy Mk2
  • Spec: 2001 2.3 Ghia LPG
  • First Name: Brian
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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #2 on: July 21, 2019, 05:15:10 PM »
When working correctly everything is fine, but on the odd occasion with no warning the engine just stops. It sometimes starts almost straight away but can also turn over and not start so that the battery runs flat.

When its refusing to start, can you get the diagnostics to speak to it at that point? When i had this issue with both my mk1 and mk2 (though both were petrols) they would not speak to the diagnostics at the same point where they wouldn't start. I would suspect this is down to the immobiliser not being deactivated (IE your typical relay 30/109 issues).

If it doesn't want to connect in that state, its something on that circuit causing a problem, either a bad connection somewhere (Relay contacts in the fusebox, fuse holder, any of the wiring between). From memory the ecu for the immobiliser is accessible from the footwell (you can follow the wires from the coil round the ignition barrel to the ecu) is that properly seated into the socket?

If it does connect, but fails to start its doubtful that its the immobiliser - the door led should give some clues if it is that, as it tends to flash rapidly if there is an issue with it.

Offline bigjeeze

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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #3 on: July 21, 2019, 08:47:30 PM »
No Johnny I haven't changed the crank sensor.  I am not sure such a random intermittent fault would be caused by the crank sensor. It feels like a fuel issue possibly caused by something electrical.
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Offline bigjeeze

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  • Posts: 307
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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
  • Region: South West
  • Country: United Kingdom
Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #4 on: July 21, 2019, 08:52:08 PM »
Thanks Brian,

I am wondering whether it is an immobiliser issue - but if so again, why the random nature.  On a previous occasion when the car stopped it was on a roundabout - I managed to get it off the roundabout and pulled in to a verge on the left whereby the car was tilted to the right, and when i tried to restart it fired immediately.  Now that may be a pure coincidence but it seems more fuel based to me.  Any ideas on that score?

BJ
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Offline brianh

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  • First Name: Brian
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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #5 on: July 21, 2019, 09:03:14 PM »
I know my MK2 would randomly cut out when the solder joints went - I had it a couple of times heading up the A34 where it would stutter, then carry on just fine. It then decided to stop on the M40 after that, and would not restart, got out to have a look at the fusebox under the bonnet, closed the bonnet, closed the door (probabbly a bit harder than I usually would), pulled phone out to try and get hold of RAC, whilst waiting for them to answer tried starting it again and it fired up. Had much the same happen on the A3, the only pattern I'd noticed was it would only ever do it after it had been running a while - typically about 60 miles so would suspect its a heat related thing. Resoldered the relay joints (which had clearly gone dry when i pulled the relay out as you could see a gap on them) and it stopped the cutting out issue and no more starting issues. only noticable difference is the starter on mine didn't crank, but given its a petrol that may be just the way they are.

I didn't think it would be immobiliser/relay related given the mk1 when i had problems with the relay, never cut out once it was started. The mk2 on the other hand does. I did initially blame the hardwire kit for the dashcam which I'd put on the bottom righthand fuse - which I later found out to be the power supply to the ecu as if you pull it with the engine running it will cut out - you don't have anything extra on that fuse do you (its one of the few I could get the fuse holder onto which was ignition switched hence why I'd used it)

Either way, if you can find a cheap obd scanner you can keep in the car, and try scanning when it plays up, that might give you an answer - if it won't talk you know its some sort of immobiliser issue, if it will then its looking like something else is the cause. The door LED might be enough to tell you if it works as well?

Offline johnnyroper

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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #6 on: July 21, 2019, 10:11:40 PM »
Immobiliser could explain the non start but I wouldn’t think it would cause the cutting out as once started the immobiliser has no bearing on it. Relay issue could as it would kill power to ECU giving symptoms of immobiliser fault.
As above a code reader ideally with live data could be the key as it will show any parameters out of spec when car does play up assuming it connects to ECU. A failed crank sensor does not always show a fault but would stop fuelling Similar to what you describe. Not sure a cam sensor on a PD does that usually they cause difficult hot starting when failing again not always giving a code.

Offline mike wilson

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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #7 on: July 22, 2019, 09:37:28 AM »
A long time ago, in a galaxy far away 8 -) this was caused by the cardboard inner off the inside of an additive bottle top being loose in the tank and occasionally blocking the fuel outlet.  Might be worth investigating.

Offline bigjeeze

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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #8 on: July 29, 2019, 04:14:10 PM »
I have just swapped the fuel pump form my other galaxy to this one and will see what transpires. I had as good a look as I could in the tank without being able to remove it and I could not see any floating detritus or otherwise.

I'll let you know how it progresses.

BJ
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Offline bigjeeze

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  • Posts: 307
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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
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  • Country: United Kingdom
Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #9 on: August 15, 2019, 09:18:39 PM »
Well so far so good. I'll keep you in the loop!
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Offline bigjeeze

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  • Posts: 307
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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
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  • Country: United Kingdom
Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #10 on: August 27, 2019, 06:58:18 PM »
Just a brief note. I have been using the Galaxy and all has been well until this morning. It stopped again!  So it wasn't/isn't the pump!.

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Offline brianh

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  • Posts: 617
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  • Model: Galaxy Mk2
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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #11 on: August 27, 2019, 09:31:42 PM »
Have a prod around with the crank sensor - Not on the Galaxy, but I've had one that gave me grief on a Focus for months until I found what it was (when it failed completely pulling out of a petrol station leaving me stuck in the middle of the road and refusing to start). Might be a bad connection or a dodgy sensor, but that might help narrow it down.

Offline bigjeeze

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  • Posts: 307
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  • Model: Galaxy Mk2 Auto
  • Spec: 03 Tdi Ghia Auto
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  • Country: United Kingdom
Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #12 on: August 28, 2019, 08:38:50 PM »
Thanks Brian - will do.  On the way home last night ( a short 2 mile journey) the warning Engine Garage! came up and the glow plug light was flashing.   Stopped and restarted and it went away. It was fine this morning but again on the way home the same thing. Stopped and started and all well again!
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Offline brianh

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Re: 2003 TDI Auto Still stopping intermittently!!
« Reply #13 on: August 28, 2019, 10:15:48 PM »
I think the flashing glow plug light is usually down to the brake pedal switch?

Either way, if its done that, I'd expect a code read should be telling you why now? Though of course it may be something else entirely!

 

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