poor start a2 90 bhp tdi

[pc759]

hello
this is what i think has happened and invite comments to say yes or no.
Ive checked through a search for people who have had similar.
Got out of school today the carwas a little reluctant to start (first time ever!)
Never mind i thought, could be pilot error with key i began to question whetehr i'd waited for the light to go off...
I needed fuel so went up the road and put in £20 or approx 15 litres
When i came back: car not starting so i cranked it until it did as i didnt want to be stuck anywhere. At this point my glow plug light started flashing and hasn't gone off and the engine light on the other side is also on permanently. Neither of these were there when starting from outisde work. So i think ive caused a crank speed sensor signal by turning the engine over until it started I will need to get it cleared and see what happens
What do you think?

[spike]

Hi pc759
Poor starting on diesels is often caused by fuel leaks / fuel filter problems causing loss of system prime but this does not normally trigger any warning lamps.
The engine won't start if the crankshaft speed sensor fails but a faulty camshaft position sensor could give the symptoms you describe. Take a note of any fault codes before they are cleared when you have the diagnostic scan.

Cheers Spike

[pc759]

hey guess what ??
got in the car this morning and somewhere on the way to work the lights went off of their own accord!!
Interestingarticle on the a8 electronics in car mechanics magazine this motnth BTW whic mentions the camshaft signal sensor etc
well alls well that ends well but i wont hold my breath





Paul

[pc759]

Hey guess what? the undiagnosed and ignored gremlin from above has returned...
I have to extend my cranking even when parked on an incline and last service was done by audi so this makes me think that the fuel lines are ok and system is prime manintaining at rest and anyways it drives fine once going ( although on reflection i am a little miffed at recent otherwise unexplainable increase in consumption to a poor 52 mpg).
If it was the crankshaft sensor it probably wouldnt start in anycase at all would it? And i have managed to get it going each time
Glowplugs only 2/3 working? Does anyone know how to check these and i wouldve thought they would last longer than 52k miles . My journeys are 2x 15 miles x 5 days p.w would this cause premature loss of life expectancy?
Any comments gratefully received
BTW went to see frankie boyle last week he was gooood
see laughter lounge for 2 gags bbc wont broadcast
Paul

[murdo]

Get a VAG COM scan done by someone who knows what theyre about. Youre also lucky enough to be less than an hour away from Skipton Autos!:D