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[shiny69]

Hi guys, hoping someone here can shed some light on my problem. I run a facelift 2.5 V6 and recently starting has become a lottery.
I can go to the car sometimes and it will fire up first turn, other times it just turns and turns. I have noticed that when it won't start the engine management light doesn't go out but it does when it starts, probably what it should do when it starts anyway. I have done the paper clip test and it's the usual two codes 12 and 31, nothing other than that.

At present the car is stuck at the front of the house, she wouldn't start at all today. Usually if I leave it for a hour or more and try then she will start. I'm really hoping it's not the ECU :-(

Anyone had a similar problem?

[JamesV6CDX]

Even without a code 19, likely to be crank sensor failure - classic symptoms

[shiny69]

Thanks James, I'll persue that avenue tomorrow and hope it's that and not the ECU. How easy is it to fit a new sensor?

[JamesV6CDX]

Piece of cake - see maintenance guide on here

[05omegav6]

Only buy a genuine sensor from a genuine Vauxhall dealer that you genuinely have to go to in order to buy it...

That means no Ebay/Gumtree/Eurocarparts etc...

Ignore this advice at your expense and on the condition that everyone will say "I told you so" when your cheap pattern sensor fails after a week or so

[shiny69]

Thanks Al, I was just browsing Ebay and pondering the quality to price ratio. I'll get down to the local dealership tomorrow but I imagine it won't be an off the shelf item!

[05omegav6]

Thanks Al, I was just browsing Ebay and pondering the quality to price ratio. I'll get down to the local dealership tomorrow but I imagine it won't be an off the shelf item!

You might get lucky

Just remember that although it might cost £80, or £50 more than an ebay special... you'll buy the £30 ebay special, closely followed by the genuine £80 one... so you might as well save the £30 for summat useful

[shiny69]

Hi guys,
            just a quick follow-up. New crank sensor fitted this morning, starts everytime on the nose. Thanks for all your help, much appreciated.

[05omegav6]

Hi guys,
            just a quick follow-up. New crank sensor fitted this morning, starts everytime on the nose. Thanks for all your help, much appreciated.

Swotwedo