[jedi-knight83]

2006
Manual
168000 miles
Never any problems starting and the stuttering / misfiring is intermittent

Car started stuttering at lower revs and cut out a couple of times at traffic lights.

There were various fault codes including fuel rail pressure sensor and fuel filter.

Changed fuel filter.

Car ran perfectly for 80 miles and then stuttered a couple of times and then started doing it more regularly again.

Seems to do it a lot when I'm going around a fast turn (from m25 to m11 for instance).

Scanned for faults again and got

4B90 - Rail pressure monitoring on engine start
3F31 - Rail pressure sensor signal
4587 - Fuel filter

cleared faults again and drove another 140 miles, again seemed fine for 50miles or so and then immediately started stuttering going from m25 - m11, IE a fast sweeping left hand bend at 60mph.

Faults back on the car today are

3F31 - Rail pressure sensor signal
4587 - Fuel filter

[rasa bmw]

maybe fuel pump,,but id get fuel filter changed as they are cheap,unless its been done lately,ive changed mine 4 times in 50 k miles in my e46 and also e90 as soon as i got it.

[jedi-knight83]

Originally Posted by jedi-knight83

.....including fuel rail pressure sensor and fuel filter.

Changed fuel filter.

Car ran perfectly for 80 miles.......