Hi there what year is the megane ,what else is not working,you need to check all systems , also any lights coming on ,on the dash , ie whats the injection light doing , whats the red led on the dash doing , does the plip key work correctly , when you turn the igntion on can you here the fuel pump work for about 2 seconds, put as much info you can then we will see if we can help .
mark
May 2008