Sprinter 313 Lack of power below 2200 rpm?

[Stevey]

Hello Everyone.
Just " upgraded " from a lovely old 312D sprinter to a 2001 313CDI version. The new van runs fine but seems to have no pull below about 2200 RPM then the power comes in pulling very strongly like a train. This make driving the van around town a pain as you have to keep the rev's up all the time Is this normal ? and if not any idea's - Thanks Steve

 

[dava]

Couple of things, but you realy need to see if there are any fault codes stored as this will help diagnosis.

Air pressure sensor, (004 153 31 28) located on the intercooler pipe pass side front between rad and bat tray, wire going to it, it's held in by two torx screws into the metal pipe between the to hoses.

Turbo pressure converter (000 545 05 27) and the vacc pipes associated with this, try blowing through them and listen for air leaking out. This is located under the air filter drivers side bit awkward to get to so you have to take the air filter box out or get it from underneath.

Again hope it helps.

 

[Stevey]

Hello Dava. thanks for the info.
I have just got the van back from a service yesterday and had mentioned this lack of power and was told there was no fault codes showing ?.
They changed the injector connector plugs and leads and the brake light switch. I was told the engine management system get's a signal from the brake switch ? ( it was working the brake lights ok ). Unfortunately it's like driving 2 different van's. Below 2200 rpm it's a pain to drive and above 2200 rpm the engine note changes and everything seems fine, smooth and powerful.
I will have another look around again tomorrow. Thanks for your help

 

[dava]

Still think it's one of the two. Spoke to some of the lads today and they agree with me. We are fortunate in that we can put one in to try, the the air pressure sensor may not show a fault code as it is working just not below 2200 rpm. Check your vacc pipes etc first as that's the cheapest option and a easy fix.

 

[Stevey]

Hello Dava.
Got the garage to check over those points you mentioned, unfortantly it wasn't those items and apparantly it turned out to be the Turbo.

Thanks for your help.

 

[Cnics]

It would seem odd for it to be the turbo itself as it appears to be doing its job. Mine is a little underpowered below about 2200 at the moment (mines a 311). I occasionally lose the turbo alltogether and have to switch off and restart it to get it going again, this is some sensor on the turbo so i'm told rather than the turbo itself.

 

[dava]

Check the items I've listed, by switching it off your probably resetting it. Also turbos are a common occurance, there variable vain and collapse after a while. Ususally on return journeys from Uranus and other galaxys