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Old 03-09-2013, 08:47 PM   #1
BigBassape
 
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Default Help! acceleration issue!

I'm up in bloomington Illinois. My 2003 Sprinter started acting up this morning. Basically it wont accelerate past 2500 RPM (give or take a couple hundred RPM). I recently had the intake replaced via the recall, and put an EGR valve on it. There's no Check Engine Light, and according to the Ultra gauge, my boost is normal and I'm not having any noticeable drop in MPG. I'm 400 miles from home, and while I can get highway speeds out of it, climbing hills and any kind of real acceleration is non existent.

any ideas?

thanks!

geoff
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Old 03-09-2013, 08:54 PM   #2
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Default Re: Help! acceleration issue!

BBa,
Do you have a spare fuel filter?
Did you fill up with fuel recently? Was it "winter fuel"?
If not might try one of the diesel anti-gel products.
Does it only do this when the engine is cold.... or after half an hour of driving which will
warm the fuel in the tank via the fuel return from the engine.
Also, since your is an '03 with not in tank boost pump, check your clear fuel line for
air bubbles.
Cold weather often hardens the plastic fuel lines and the o'rings leak a bit of air into
the system.
Roger
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OM-651 I4 2.143 liter two stage turbo charged with 36.9 PSIA MAP Limit Valve
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Had 2006 T1N 3500/158|2010 NCV3 519/3500/144|2011 & 2012 NCV3 519/3500 170
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Old 03-09-2013, 09:00 PM   #3
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Default Re: Help! acceleration issue!

I filled up last night at a RoadRanger in Springfield. I don't have a spare filter. but the Filter only has 11,000 miles on it. I was told at the dealer that my Water in fuel sensor was bad. but it ran great yesterday all the way up here.

is the 2500 RPM thing a version of LHM? it's the same in all gears.

the weather is in the 40s, no colder than it has been all winter. It does it constantly. I just drove it 70 miles to bloomington for the gig tonight.
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Old 03-09-2013, 09:24 PM   #4
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Default Re: Help! acceleration issue!

BBa,
It only takes one tank (or even a few gallons) of gelled or dirty fuel to plug up your fuel filter.
Since you have the '03, which has to pull the fuel all the way from the tank up to the pump on
the top front of the engine any restriction in your fuel filter will slow the supply of fuel to the
low pump and starve your engine for fuel.
I would stop and put a fuel filter in first thing.
Since you have no LHM, indicated by the CEL, have you checked for codes with your UltraGauge EM?
Will your UG EM give you are readout for fuel rail pressure?
I don't know the number off the top of my head, but if you post it, I'm sure there are several members
who know what it needs to be vs what pressure you are getting.
My guess is that you have some sort of restriction in the fuel supply line and the filter is the most
likely failure/restriction point.
Since it's Saturday, you might find a MB or Freightliner dealer who can change the fuel filter if you don't want
to attempt it.
They could also run the diagnostics on the fuel system and rail pressure and probably fix the WIF sensor.
Roger
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2014 Sprinter 516 series (3500 DRW) 170"/4325 mm wb Hi Top Short Back
OM-651 I4 2.143 liter two stage turbo charged with 36.9 PSIA MAP Limit Valve
7 Speed 7G-Tronic, manually shiftable, automatic transmission.
Suspension Seats, Active Safety Package +, Parktronic, OEM Hitch/wiring
OEM back up camera, Bi Xenon light package, fog lamps, headlight washers.
Had 2006 T1N 3500/158|2010 NCV3 519/3500/144|2011 & 2012 NCV3 519/3500 170

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Old 03-09-2013, 09:38 PM   #5
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Default Re: Help! acceleration issue!

my ultragauge (for whatever reason) doesnt' seem to be able to read codes. Also no luck on a fuel filter here in town today. Not awesome at all. I'm gonna go look and see if I see any air bubbles in at the filter now. I'm suspecting it's bad fuel. what are my options? just run it out? is there an additive I can put in to help clear it?

thanks for your help!
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Old 03-09-2013, 09:45 PM   #6
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Default Re: Help! acceleration issue!

There are some diesel fuel conditioners you can add that might help, but if your fuel filter is partially restricted with dirty fuel, the conditioners probably won't clear
that sort of problem.
The fuel flow is from the tank to the engine, so you might try removing the fuel filter and back flushing it somehow to wash the junk out.
Have you tried the local auto parts stores?
Many of them have fuel filters for Dodge/Freightliner Sprinters. Maybe not a factory OEM filter, but on a Saturday, you may have to take whatever they have.
Roger
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2014 Sprinter 516 series (3500 DRW) 170"/4325 mm wb Hi Top Short Back
OM-651 I4 2.143 liter two stage turbo charged with 36.9 PSIA MAP Limit Valve
7 Speed 7G-Tronic, manually shiftable, automatic transmission.
Suspension Seats, Active Safety Package +, Parktronic, OEM Hitch/wiring
OEM back up camera, Bi Xenon light package, fog lamps, headlight washers.
Had 2006 T1N 3500/158|2010 NCV3 519/3500/144|2011 & 2012 NCV3 519/3500 170
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Old 03-09-2013, 11:02 PM   #7
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Default Re: Help! acceleration issue!

Managed to locate a fuel filter at NAPA. Added some conditioner just in case as well. Installed the filter and then killed the battery cranking it to prime the filter. Sheesh. Waiting on roadside assistance for a jump. Hopefully that will fix it!
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Old 03-10-2013, 12:02 AM   #8
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Default Re: Help! acceleration issue!

Won't start! I primed the filter too.
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Old 03-10-2013, 12:32 AM   #9
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Default Re: Help! acceleration issue!

primed filter. no luck. pulled the outlet hose off (that goes to the pump) and put it in a small bottle of fuel, and it wouldn't draw the fuel out. I'm guessing my pump is shot.
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Old 03-10-2013, 06:25 AM   #10
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Default Re: Help! acceleration issue!

Quote:
is the 2500 RPM thing a version of LHM? it's the same in all gears.
Yes, it's one of the Limp Home Mode possibilities :
there's a flavor of LHM which locks you in 2nd gear,
there's a flavor that limits your RPM to 2500 (but doesn't interfere with shifting)),
and i'm sure there are others.

Vic has frequently posted the "what limits you to 2500 rpm" section from his training manuals.
I'll try to dig up a citation (or copy thereof), but it'll take a few minutes...

--dick
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((as always: this post may go through a couple of post-posting edits... so maybe give it ten minutes before commenting))
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