sounds like you need to replace the coils,do all 4 of them and change your spark plugs. The onboard computer will need resetting may cost a ton from renult,if you are lucky it may reset itself.
jezza.pee
February 2010
the engine management (the black box) has detected a fault car will need to go on a code reader to narrow the fault area down ie fuel injector, spark plug, coil pack plug leads .
wirecutterman
February 2010
I can answer this question...
A flashing 'engine' symbol has appeared on the dashboard of my megane ?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.