2005 S40 T5 cutting out

[iainmd]

Originally Posted by Guru

I would tell them to do these two first and then go for a test drive before continuing with the rest, you could end up saving a lot of money.

The TCV is a cheap and easy to replace component that is often overlooked by mechanics in both diesel and petrol engines alike, but can cause all the symptoms you described and a lot more, even the "limp home" mode during or immediately after an aggressive overtake is most often caused by the Turbo control valve, but the poor EGR valve "in diesels" always gets the blame first for some reason or another, although the TCV sticks out like a sore thumb in the engine being it the only brown semi-cylindrical plastic component in an otherwise black engine bay enviroment.

Agreed. I'd go for the Fuel Pressure Regulator after that as your issue sounds very similar to mine but worse.

[whatsupdoc]

Thanks to everyone for the advice. I now at least have some direction as to what the problem may be. At this stage I have told them to replace the Fuel pressure regulator and do the software upgrade. If that doesn't work will change the Turbo Control Valve next - I have had the symptom that Guru described - where the cutting out started after an aggressive overtake of a long line of trucks - just count myself lucky it didn't happen while in the middle of the overtake!

[t5_monkey]

Anyone got a part number for the fuel pressure regulator?

cheers - Ben

[Miniguy]

Have replied in your main post