GTI cutting out, oil light flashes

[JULEE]

I am going to try and adjust the throttle cable and see what happens.

Will let you know the outcome.

I did change the black striped pipe but nothing good happened - as you say the bore is only small.

[rheenos]

Hi everyone, i have been experiencing the cutting out with oil lights for around 6 weeks now, also the car wants to stall at lights etc.... after reading this forum (lots!) and 3 weeks at mates garage it looks like the ignition relay has done the trick with the random cut outs at least 

This worked for me, it looks like different things work for different people as i tried relay 30, crank sensor etc etc.... Just takes a while to find it!

As for the stalling when dipping the clutch? have looked at another thread under the mk3 section starting with "trouble shooting mk3 gti 8v engine......" - very usefull! this weekend will clean out throttle bodies and fit new air mass sensor as mentioned there - so should cure the traffic light dance with the throttle and clutch!

Must say this is the first vw I've owned and the support network/forums are fantastic! would have sold up by now otherwise, thanks 

[JULEE]

The sysmptoms of my GTi were :-

Stalling when slowing, mainly at junctions. Seemed to happen when clutch was dipped at junctions/lights, though the stalling could be got round by dancing a little on the clutch/accelerator. The rev counter showed erratic idling at 800, dipping to 750.

Just bought some carb cleaner for a fiver. Took the hard pipe off on the side of the throttle box to check the condition of the butterfly and it was caked especially around the edges, where I believe the clearance is rather important.









This pic shows the edge of the butterfly after I scraped off a little gunk.

So, I cleaned it out with the carb cleaner. Sorry didn't take any piccs after clean.

After re-assembly, I took it for a test drive. I niticed that the idle was a lot more sharper at around 925 and it was stable. Took it for a drive, purposely finding as many lights and juctions as I could, and guess what. It did not stall. It has only been on a 15 minute drive but this used to be enough for it to stall umpteen times. I will let you know how it goes.

As I was cleaning it, I found the hose connected to the hard piping full of gunk. Can anyone tell me what the red circled box is in the following picture, and what the red arrowed hose does - this was full of gunk!!
I would like to perform a more thorough clean when I know what I am doing.




Hope some of this helps anyone out there with similar problems.

 JULEE   

[EvilScotsman]

Julee - thats the engine breather box - under that cover (its hard to pop off but does just pull off from the back when the screws are out) - thats where the crap in the TB comes from.

My TB was dirty too and you are right, the gap is tiny and critical to the idle speed. I took the TB off and gave it a right good seeing to(lol) and now it idles perfectly all the time. I was able to have it idling wi the throttle cable disconnected so that was a red herring. I still have a kind of soft misfire between 2k and 3k as a lot of folks have mentioned too, so im thinking the MAF needs cleaned, or the fuel pressure regulator is fooked - haven't got round to those bits yet. Doesnt do the misfire thing when its started in the morning, just when its warmed up. May be the ECU temp sensor too i guess

[rheenos]

Quick update:

I planned to clean out throttle bodies this weekend - but was put off with the thought of taking so much apart.  Was advised to simply take off the air filter box and squirt carb cleaner into the air intake (needed the misses to accelerate as it makes the engine want to stop)...

It worked! have covered nearly 100 miles since and hasn't faulted! 

Hopefully my ordeal is over???!!!! In the past few months have had:

Wing mirror stolen 
Bumped into in a car park by a little boy in a bazzed up corsa 
Engine died randomly - 3 weeks in garage 
Engine stalls 
Exhaust replaced 
Wheel bearing replaced 

So I'm hoping to have a break from problems.... please!!!!!!

[oxb1l]

 
MY CAR RUNS !!!
I have replaced the 30 relay,cleaned the throttle body,replaced the perished hoses,had a new fuse box fitted as we were loosing earths(this was noticed due to noises coming from the box) and finally the engine speed sensor cured it !!
BUT the computer was getting all the correct signals from the sensor and would run sometimes but not others this was due to perished coating on the wires hence touching bare wires =NO GO
but when they weren't touching it would go ok.
these wires are not visibly damaged only after removing the sleeving was this found.
hope this may help someone else
drove Edinburgh to Glasgow no probs sailed its mot
Honda civic VTI for sale !!!

[Ragy]

Hi i have been suffering from the same problem.....

I have already changed the the ecu relay and the ignition coil but with no joy.

Is there a difference between the 'ecu relay' and the 'hall sensor'?

cheers guys..........  
 

[boneybradley]

Hall sendor/sensor is on the side of the dizzy..and the ecu relay is in the fuse box. both cause crappy idle problem's and another thing ragy there is also a fuel pump relay that's unreliable and would be worth swapping

[bsting]

The part # for the 'crank angle sensor' is...

037 906 433

You can buy non-vag, the brand is called 'FACET' (made in italy)
Its the same part with the same # on the box and a bit cheaper too.

The 8v AGG and the 16v ABF use the same sensor, not sure on others

[bsting]

Hi there

How is everyone getting on?   bloody golfs
Hey, for me i did this....changed the crank angle sensor, and fitted a new #30 relay.

The car fired up sweet and idled as good as. Let her warm up and took her for a wee fang....touch wood....all is well.
I will clean up the throttle body as well and run a bit of AV-GAS in her to really clean things up!!!!

The #30 relay part # is 165 906 381 - WLO 50 237 007

Make sure you get a light grey/brown coloured one with 'made in germany' on it and it comes brand new in a vag box.

Do not bother with the Tunisian (my old one) or Malaysian made crap if they are still on the market.

Hope that helps, and everyone is ok 

The fuel relay is #167 you will see it there too, i might do mine as well.
But will see how i go with what i have done so far...