Thought I'd leave it a while after replacing the fuel filter to see if it happened again. Unfortunately it did and this time I got a code 4530.
Just feels like the turbo isn't doing anything .
Any help would be great
yep your right now got a code for it its turbo related,
below link is for bmw and different turbo system but a lot of the details stand for yours as well, the controller valve lives at rear of engine above the drive shaft on back of engine a total pain in arse to get at, can get at it from top remove airbox, the link shows what ot looks like, it has a vent pipe with a filter in it sometimes the foam gets blocked and effects the valve, new valve europarts £60 ish,
need to know you have vac feed from pump on side of engine using that hand pup thing should be able to see what pressure its got 14-25psi is about what it is,
after that the vac pump on the vnt actuator and pump suck pressure to 14 psi ish the lever should move to the bump stop and just hit it around this pressure,, better still make note of the pressure out of vac pump and set the vnt 3psi under it to be on safe side worth a punt,,
would also check the turbo turbine is happy no big movements and its not a bearing problem within the turbo https://www.e90post.com/forums/showthread.php?t=1066141