Temporary missfire issues

[andyrew_69]

saxo vts with a temporary missfire, if i leave car sat ticking over for few mins, it will start missing then cut out, and all driving along sometimea and occasionally when put foot down it will missfire...any ideas?!

i have changed map sensor, idle control valve, throttle position sensor, spark plugs and coil pack, any ideas? injector? lambda sensor? thanks