hi i have a expert 2.0 hdi the mil light kept coming on n off. so i change the fuel filter (seamans) and once i dont that all hell broke lose. now my cab has many different codes. starts up everytime idle no problems drives well but once you are up to speed say in 4th or 5th take your foot of the power then try to reapply engine has cut out apply clutch cabs out cold have to take key out of ignition to get it restarted as if you dont will never start. also when in idle when you turn cab off it over runs 2/3secs but if u have small revs cuts out staight away. also if u hold the revs at 2000 after 5 secs will rev itself up as if you have applied the power hard. i have checked the wiring and found some dodgy wires replace no different changed the filter again nothing. changed the fuel rail sensor nope changed the fuel temperature sensor nope. peugeot say they think its sucking in air from somewhere??? live data showed idle at 298 and then 1000 but is in limp mode. then 1300 out of limp. codes where for feul pressor sensor/fuel temperature/air flow meter/ feul regulator and clutch sensor. HELPPPPPPP only way to drive cab is to drop the cluth each time u need to coast.