My 1.6 used to conk out all the time when I first bought it.
Was typical really.. the person I bought it off delivered it to my door and it seemed to be running fine. As soon as he went, I started it up to move it and it just died, great!
Changed the plugs and filter, still no joy. Bodged the accelerator pedal to keep it running and it worked for a little while, but then kept getting worse.
In the end I got it plugged into a computer, which told me my throttle body was knackered, so I got a second hand one and I've not had any problems since
