illegal. WOF time...
Join Date: Mar 2012
Location: New Zealand
To save you the trouble - yes it's the crank sensor. The crank sensor lead is a chocolate brown one on the top of the motor at the back - there are several. The lead when disconnected and engine off should have a resistance of 860 Ohm between the pins. If the resistance is 1 then the sensor is dead.
Jack the car up, put it safely on stands, disconnect the exhaust from the manifold to move it out of the way. Get a 5mm hex key and crawl under and reach up, following the lead to a small round plug on the back of the block under the starter motor. The plug is held in by a single allen head bolt - undo, remove, reach up and remove the clips holding the lead to the back of the engine. Get a friend to help by jiggling the lead so you know you are working on the correct one. Tie a knot in your old lead so you don't accidentally reinstall it instead of the new one.
Now get the friend to dangle your new crank angle sensor down the back of the engine. Ensure the old one came out with the orange coloured oring still attached, otherwise pick it out of the hole. Insert new sensor with new oring into the hole, do it up, clip the lead to the retaining clips, come out from under, plug it in, start engine.
Go back underneath and reattach exhaust after apologising to neighbours.
Problem solved, no money spent other than on new part.
Hope that helps.