Redtop not sparking ? for no obvious reason !!

[archangeldk]

Hi there, have a Corsa B running a redtop or C20xe , and for some reason it will just not spark.
I have replaced the coil, checked all leads , new spark plugs, checked the rotor arm and dizzy cap all of which are fine, connected the coil negative to battery negative to see if there was a poor earth, no difference, connected the battery (live) straight to the coil (live) and still nothing.

Been at it for two days now but its coming down to a lot of head scratching and i cant think of anything.
Anyone here have any suggestions ?

Cheers

Dave

[sam919]

http://www.vauxhallownersnetwork.co.uk/showthread....

Some finger pointing at the crank sensor and power to the ECU.

[jt racing]

Fuel pump relay sends a signal to the ecu to spark, they are known to go pop...
Cranks sensor also let's it know when to spark so try that too.
Lots more things but they are the most common reasons.

[archangeldk]

Thanks, had my thoughts on the crank sensor as it had been brushing against my manifold an the insulation is a bit fooked.

will try that an let you know how i get on.
Thanks again
Dave

[archangeldk]

Hi there, tried the Crank sensor still no luck , cant seem to locate the fuel pump relay although i can still get fuel from the fuel rail so im now severely confused :S

[sam919]

Try your input into the ECU, if you trace back the wiring diagram to find the 12v supply then get a multimeter and see if its getting there. Fuel pump - Stick your mm on continuity and disconnect each relay one by one, noting the wiring positions, put a lead onto the supply/pump and then test each of your wires that you have just taken off i.e. varyfying the wire that supplies the pump.

[SXi Lad]

Lol...don't have much luck with cars huh....fked the focus and corsa.

[archangeldk]

Its running now, put a new module for the coil and its running brilliant cheers for the advice , an btw focus was done an fixed an sold lol its now this weecar thats become my track project , its awesome