running problem

[rens914]

i have a problem i can't solve
my SE turbo starts and runs fine till ?? i hear a clicking sound and it yust shuts off
or
it starts and runs miserably and sometimes at once runs better and revs superb
have made a test drive today with the car and it ran like a dream but i didnt return home. it yust stopped ????
i have checked the fuelpressure, changed the fuelpumpo and filter but it seems to me something like a sensor
i dont have freescan
is this something someone recognises ?
rens

[rens914]

thought of the inertia switch too but it still works fine
can't believe it's gone alien
next must be a ralay
cant figure out anything else