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[GmasterT]

It seems after leaving it a few hours, it only wants to start when the cas under the starter is unplugged (normally while attached to another car for jumper power!)

Once running for a min, it drops the idel, skips abit and throws the gearbox into safe mode. I gather then that the cas is knackered?

Also, replaced the 2 seals for the oil cooler going intothe oil filter housing and its now leaking worse than before.

Just wanted to run this by you guys as with all the time and money spent on it, if it doesnt start behaving soon, Im getting shot 

[GmasterT]

£100 + vat for the sensor?  Surely not!

I get the impression its genuine part only?  :-/

[Welung666]

I'd only ever buy genuine crank sensors.

[GmasterT]

I know what youre saying, but if this isnt the cure then I would have spent another £100 on it, only for it to be beaten with a large hammer and fire!!!!

[Welung666]

What codes are you getting from it (if any)?

[Welung666]

Pity we aren't nearer, you could have temporarily borrowed the one out of mine to confirm.

[GmasterT]

Code 31... and the fact it only wants to start (eventually!) with the thing unplugged 

And yeah... thanks though 

[GmasterT]

Right... Im close to getting rid of it now!  :-? 

Changed the crank sensor, no difference

Still have to unplug it, eventually get it going then plug it back in again. After that it will start fine, unless left for over 8 hours or so.

Getting codes 31 (No rpm signal - Is the crank sensor the only thing that this would indicate too?) and 48 low battery, which I am not suprised as its been getting a caning recently. Also been having to hit the starter now as its getting warm through constant cranking, its just over a year old and I cant face buying another, but I have run out of ideas now

[Kneepad]

The only reason you're getting code 31 is because your engine is not running i.e. no RPM
signal.
Ignore that it's not part of your problem.

Code 19 is the crank sensor error.

Are you getting fuel?
Are you getting a spark at the plugs?

[GmasterT]

I ran it into work with both of those codes flashing at me the whole way though...

Getting fuel, has over a 3rd of a tank and a new lift pump arrangement, plus its churning out the black smoke when cranking.

Doesnt have spark... TD

[Omegatoy]

IF this on the td it sounds like a fuel drainback problem?
if its a petrol version  then ignore this post!!!

[Omegatoy]

I ran it into work with both of those codes flashing at me the whole way though...

Getting fuel, has over a 3rd of a tank and a new lift pump arrangement, plus its churning out the black smoke when cranking.

Doesnt have spark... TD

aha ign ore my last post!! if its chucking out black smoke when being cranked then the problem is not fuel, sounds more like a timing issue to me?

[GmasterT]

maybe timing... but as I say, it starts with it unplugged from cold. Plus, Im sure that even though it will need the glow plugs/cold start from when I came to work this morning, if I go to start it again now I know it would...

The new lift pump is glugging away... however, the more I think about it, the more I feel its fuel related... Possibley fuel system losing pressure somewhere across the day?

[Kneepad]

I ran it into work with both of those codes flashing at me the whole way though...

There is no way you should be getting a code 31 when the engine is running.
The fact that you're getting black smoke when cranking indicates you are getting enough fuel, maybe even too much.
I can only refer you back to welung's post, try and get hold of a genuine Vauxhall crank sensor.

What code reader are you using which is flashing code 19 and 31 while you're driving?

[GmasterT]

Its a genuine but 2nd hand known working crank sensor. And it was paperclip flashes on the way to work