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[Toledodude1973]

Update, when i turned ignition to 2 the throttle clicking continued i went into relay box and disconnected top loom of wires from ecu this stopped the clicking, i re-connected with ignition key in same position i.e.not moved from 2 and clicking remained quiet i turned key and car started first time but in limp mode 1100rpm with spanner light and tc lights on, once ignition turned off back to clicking noise!    This shows fuel getting there anyway,could this be crank sensor omegod? £60 odd quid gamble , as i say twiglet hopefully coming round saturday with tech 2 and hoping for comms connection any other ideas greatly received. Feeling bit more hopeful now

[Big_Al]

Update, when i turned ignition to 2 the throttle clicking continued i went into relay box and disconnected top loom of wires from ecu this stopped the clicking, i re-connected with ignition key in same position i.e.not moved from 2 and clicking remained quiet i turned key and car started first time but in limp mode 1100rpm with spanner light and tc lights on, once ignition turned off back to clicking noise!    This shows fuel getting there anyway,could this be crank sensor omegod? £60 odd quid gamble , as i say twiglet hopefully coming round saturday with tech 2 and hoping for comms connection any other ideas greatly received. Feeling bit more hopeful now

Just thinking out loud here Paul, . . . Twiglet , if he comes ,   might   . . .&  I stress might  . .   have a spare known good

used crank sensor you could try for elimination purposes.

[albitz]

I have a known good spare he could try,providing the one from a 2.5 is the same as 2.6.
Having said that,from whats just been described it doesn't sound like a crank sensor problem,although Im far from an expert.
Any signs of moisture/ corrosion/ poor connections anywhere around the plug etc at the ECU when it was unplugged ? 

[Andy H]

I carry a spare sensor in the boot (next to the spare wheel). In 150,000 miles of Omega ownership I have had to fit two new crank sensors, I haven't used the spare wheel once 

The crank sensor would normally be my first suspect but I don't understand why the clicking relays 

[Big_Al]

I have a known good spare he could try,providing the one from a 2.5 is the same as 2.6.
Having said that,from whats just been described it doesn't sound like a crank sensor problem,although Im far from an expert.
Any signs of moisture/ corrosion/ poor connections anywhere around the plug etc at the ECU when it was unplugged ? 

I have an old 2.5 one in the shed  .  .different from the one on my 2.6 though.    Although there are 2 types of 2.5 sensors I think.

Also my 2.6 is bosch    & the  2.5 is siemens  as far as I can remember .

At least trying another known good one on Pauls  car would be another item eliminated from causing the problem IMO

[Andy H]

If the crank sensor is working the tacho needle will move and the warning light will go out when the starter motor is cranking.

Old, known good, crank sensors often fail when they are disturbed so keep an open mind if swapping to a second-hand sensor doesn't have the anticipated result.

I still think it is a basic electrickery problem. Have you had the cowl off and had a good sniff around the ignition switch? It is not unknown for Vauxhall ignition switches to self destruct.

[Toledodude1973]

yep took the cowling off column all seemed ok,no sign of any moisture i think its something being sent to the ecu but dont know what it is?As i say when engine running in limp mode spanner on and tc on, could a crank sensor go on 62k or is it an age thing.?

[Andy H]

I wasn't concerned about moisture. The failure occurs if a fixed contact overheats and melts the plastic switch base. The contact then sinks into the plastic and a ridge prevents the contacts making properly (which causes more overheating)

[Toledodude1973]

couldn't see any melting or smell burnt plastic, the moisture bit was about the ecu wiring, sorry for confusion, answering more than one post at once----thanks again, with you oofers helping i'll see this car back on the road yet !

[zirk]

bit nervous of the relay bypass (not good on electrics) Zirk i would need you to run it by me in baby talk sorry! Crank sensor has not been ruled out (couldnt get any fault codes due to comms error last time ,trying again soon with tech2 so might work
really appreciate help, rang up auto specialists other side of Ipswich, most unhelpful bloke wanted £40 to pick car up(5 miles)£45 +vat to possibly diagnose fault(same cost if cant comunicate with car) when i said i'll have to get car back after diagnostics he said probably be too much cost to fix car so get  a scrap yard to take it away ! This is a 62k car surely  it cant come to that can it?

If your not comfortable with it then dont do it, tbh I would be wacking 12v directly on the fuel pump itself or as close as I could get to it, rather than shorting relays out, but that just me. 

[Toledodude1973]

Now the bonnet struts have run out of gas..........i give up!

[RobG]

Now the bonnet struts have run out of gas..........i give up!

Some here if needed

[Toledodude1973]

Thanks Rob will need some, providing i can get some joy with Twiglets tech 2 hopefully on Saturday

[Big_Al]

Now the bonnet struts have run out of gas..........i give up!

Nice bit of 2 x 1 par  timber cut to length to wedge in as a temporary measure until rest of the problems are sorted .

Get it wedged into 2 nice locations where it can't slip though  . .   don't want it slipping & the falling bonnet removing any of your body parts 

Any more progress on the main problem  ?

[Doctor Gollum]

Now the bonnet struts have run out of gas..........i give up!

Nice bit of 2 x 1 par  timber cut to length to wedge in as a temporary measure until rest of the problems are sorted .

Get it wedged into 2 nice locations where it can't slip though  . .   don't want it slipping & the falling bonnet removing any of your body parts 

Been there, done that. It hurts