Engine starting problems 1.2

[beng29]

Right, i have a clio 1.2 16v dynamique and im having problembs with it starting, its turning over but theres no fire, and sometimes it wont even turn over. I have done a full service so i know its not the sparks , and cant see it being the alternator.

after ive been a little drive and turn off the ignition if i go back to it within 5 minutes it will not start, if i wait for like 15 mins it will eventually start.

any help appreciated! thanks

 

[sbridgey]

starter motor??

 

[shieldsy172]

Sounds like maybe a crank sensor ?

 

[beng29]

already replaced , immobiliser fault