power loss on 2003 sprinter 311cdi lbw?
Occasional power loss when driving unable to accelerate above 3000 rpm.
Maintains speed but nothing when you try to accelerate.
When you stop and turn off engine then restart everything returns to normal.

STEVE, November 2008

I have the same problem, changed the boost control valve no change. Seemed to come on after changing the fuel filter and all the ancillary pipes/ fittings. Van runs lovely to about 50 miles then power and revs drop. I had the heater on last week and van went 150miles no issue - so I suspect either a fuel air blockage that develops when it comes up to temp or some sort of cooling system fault, but struggling to find which. Paid to have the codes read but so many it was a joke- am pretty sure I don't have a crank fault with 70k on the clock ! So what's the best way to get air out of the fuel system before I start on the merry go round that is Mercedes dealer ships?

Gilly, July 2016

hi ive also got a problem, up the first hill of the day but not everyday, loss of power, exhaust seems to sound louder and a stronger whistle from the turbo when i take my foot off, also a smell of un burnt fuel, could it be a dodgy exhaust box or cat?
it runs fine after i turn it off and back on, been plugged in at the merc garage and a new turbo control valve was fitted, van seemed fine for a week but same problem on same hill today, any help please as i dont want to be paying the £55+vat per hour again and again.

neil, December 2014

Check waste gate control solenoid and waste gate control cyl.,solenoid prone to corrosion,follow vacumn pipe from waste gate and you will find it,

Wm rob, November 2014

have 04 311 sprinter it has intermitent loss of power for about 3seconds and then it goes

alan, July 2013

hi what is the filter on the turbo boost valve pipe by the bulk head please mark

mark sweetman, May 2013

ive got a mercedes new shape sprinter ive just got it top speed 80 mph my mate repaed it now i get 90 to 95 mph is that rite mine is the 311 model i had a recovery truck vw grafter 109 i remaped that and with a load on it done 130 mph it flew

mark, January 2013

i had this/ with a couple of lights came on dash? abs and another? turn ignition off and on whilst free wheeling it would go but come back.. the cure was a simple brake switch under pedal.sorted now

martyn foxwell, December 2012

This has just happened on mine, go up a slight hill, and you go backwards.
Nasty when towing a race car.

So we are saying it's the boost control valve.

I have a 2000 311cdi, driving me mad.

tony hunter, September 2012

The van smokes time and again once in a while

julius Mugadfzaweta, April 2012

we run a fleet of ambulances they all do this untill you pump the clutch once or twice

Chris, June 2010

I am mobile if you are in London and i have the Das xentry merc computer for all diagnostic and key coding purposes. www.williamsdiesels.com

Dean Williams, November 2008

common fault is the boost control valve it is located below drivers headlight under air box it has a multiplug on it and a pipe going to turbo we have changed lots of these for the same symptons

mat, November 2008