w211 320cdi wont'go

[andysej]

Just been out in the car for a short run, everything ok initialy but after a couple of mile I put my foot down and not much happened. Experienced this once before a couple of weeks ago. Acceleration is very steady, no kick down etc. Pull over and stop the engine, restart and bingo, everything back to normal

Was serviced by MB in November and been running perfectly. Not had a look at anything yet, but thinking of checking MAF sensor. Will probably end up taking it to MB for code reading.

 

[Dieselman]

Probably the inlet port shut-off motor or EGR valve are sticking.

 

[andysej]

Thanks for the advice. I'll have a look. I have also noticed that the cowls around the ends of the exhaust pipes are getting dirty (exhaust soot) much quicker than usual, this may point to egr also?

I'm not sure about the inlet port shut off motor That's a new one to me

 

[andysej]

Took the car into MB dealer today for them to have a look. Codes read and diagnosis was inlet port shut-off motor faulty.

Thanks for your earlier diagnosis Dieselman, you were spot on

Car fixed under warranty no probs.