Proton 1.5 jumbuck stopping

[Hypo]

Jumbuck
Stops when driving, happens mostly in summer.

Any common causes?

 

[4piknup]

Crank sensor near harmonic balancer. I think its the wiring on the plug. Try wiggling it while its running.

There is a jumbuck yahoo group. Join up and ask them, there has been talk about the cas, I just cant quite remember what goes wrong