Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #31  
Old 04-26-2014, 09:05 PM
E300D's Avatar
Registered User
 
Join Date: Apr 2004
Location: USA
Posts: 404
yes both 2005.

identical cars

Reply With Quote
  #32  
Old 04-27-2014, 06:23 PM
Registered User
 
Join Date: Sep 2003
Location: Ft Lauderdale FL
Posts: 204
You said you did the sensor on the back of the fuel rail. The one on the back of the fuel rail can not be changed it is set at the factory and the book says to change the whole rail if that is a problem. Mercedes does not change them at the dealerships just the rail. If you removed that sensor. I am willing to bet you got it in there good enough for it to run without an error code but not as good as the factory settings. It is adjustable maybe before you buy a new one for $325 you should micro adjust it. I think you should mark the rail in both directions and mount a pointer on the sensor. Adjust it left one notch and then test it. Adjust it right one notch. Until it runs really good. If it starts to throw code you know you did it wrong.

Good Luck with that.
Reply With Quote
  #33  
Old 04-28-2014, 06:55 PM
E300D's Avatar
Registered User
 
Join Date: Apr 2004
Location: USA
Posts: 404
I have purchased a new one and we actually swapped it out and it did not make a difference at initial diagnosis. It was a sensor at front of the hp pump.

From what I have heard, the press regulator is not adjustable.

Thanks
Reply With Quote
  #34  
Old 04-28-2014, 07:37 PM
dude99's Avatar
Registered User
 
Join Date: Nov 2009
Location: Vancouver, BC
Posts: 1,492
Do these cars have a fuel strainer in the tank that could be plugged?
__________________
1998 Ford F150 -My current Daily
1989 J-spec 420SEL Wife's Daily
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
1997 E290 Turbo Diesel Wagon -traded for above, an amazingly comfortable car to drive, great drivetrain, but the rust, oh my god the rust
1992 BMW 525i -traded in
1990 Silver 300TE -hated the M103
1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one
1979 Silver 300D "The Silver Slug" -Sold
Reply With Quote
  #35  
Old 04-28-2014, 10:12 PM
65aircooled's Avatar
Registered User
 
Join Date: Dec 2013
Location: The Free Republic of New Joisey
Posts: 139
Quote:
Originally Posted by grease lightnig View Post
You said you did the sensor on the back of the fuel rail. The one on the back of the fuel rail can not be changed it is set at the factory and the book says to change the whole rail if that is a problem. Mercedes does not change them at the dealerships just the rail. If you removed that sensor. I am willing to bet you got it in there good enough for it to run without an error code but not as good as the factory settings. It is adjustable maybe before you buy a new one for $325 you should micro adjust it. I think you should mark the rail in both directions and mount a pointer on the sensor. Adjust it left one notch and then test it. Adjust it right one notch. Until it runs really good. If it starts to throw code you know you did it wrong.

Good Luck with that.
Quote:
Originally Posted by E300D View Post
I have purchased a new one and we actually swapped it out and it did not make a difference at initial diagnosis. It was a sensor at front of the hp pump.

From what I have heard, the press regulator is not adjustable.

Thanks
Why do I ge the feeling that you guys are talking about two complete different things? HP pump and fuel rail...
__________________
W211 B-PILLAR TRIM PANEL REPLACEMENT
My Continental Tire Experience

By Land:
2005 E320 CDI (Unnamed as of yet)
2011 Toyota Tundra DC limited 4x4 "Big Red"
1965 euro import VW Beetle "Mojo"
By Sea:
22' Grady White Seafarer "SeaSun Pass"
Reply With Quote
  #36  
Old 05-01-2014, 02:03 AM
Registered User
 
Join Date: May 2009
Location: Salt Lake City, UT
Posts: 477
The bio diesel has ruined your injectors I have seen this many times ... There is a tester for the leak quantity of the injectors if u want to confirm but pretty much garuntee they are ruined as well as the pressure regulator
__________________
1987 300D 180k
1985 300SD 330k Helga
1992 300D Lola 269k- Sold
1986 325 coupe Bessie >300k Original engine(ODO Broke) sold
2006 2500HD Druamax Linda- Tows boat and looks pretty in garage thats about it
Reply With Quote
  #37  
Old 05-01-2014, 03:31 AM
Skid Row Joe's Avatar
Banned
 
Join Date: Oct 2007
Location: #KeepingAmericaGreat!
Posts: 7,071
After being away adventure travelling for almost a month, I returned home to Texas and once again have the pleasure of driving my 06 E320 CDI every day or so a few miles - it struck me that it is almost; overpowered, if anything. You have to watch that these massive-powered creatures don't get away from you when pushing the throttle on 'em. I am thinking that the foreign versions of the 05/06 E320 I6 CDI, the E270s, are probably a little more tame to handle and better mated for power, than these monster-powered 3.2 liter turbo sedans that we have here in the States.
Reply With Quote
  #38  
Old 05-01-2014, 06:18 PM
Registered User
 
Join Date: Sep 2003
Location: Ft Lauderdale FL
Posts: 204
Common Rail

Did you change the back of the Common Rail "We did the sensor at back of fuel rail." Because that would be bad. I was wrong I looked it up a new rail is $750. And Yes I have a spare in my garage that has an adjuster nut on it. It might not be adjustable but it can be adjusted.
Reply With Quote
  #39  
Old 05-02-2014, 12:20 AM
E300D's Avatar
Registered User
 
Join Date: Apr 2004
Location: USA
Posts: 404
Drove the car today. Running smooth and no smoke. Fuel pressure rail peaks at about 23000 psi..turbo peaking at 32 psi...

The dealer has flow tested the injectors before I bought the car..not sure if I can trust them or not..they also performed engine compression test. All seemed to be well

So if I am peaking at 23000 psi ..how could the pressure regulator at back of rail mis adjusted?

How can injectors be fried if car runs smooth and no smoke.


It seems like a software or sensor issue..but ..
Reply With Quote
  #40  
Old 05-02-2014, 11:34 AM
Registered User
 
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,560
If the injector spray pattern/atomization is messed up, I can see the results being low power and poor fuel economy due to poor combustion - it kinda makes sense. But then I would also expect there to be an observable difference in the way the engine runs - either idle noise, or perhaps additional black smoke under acceleration.

Unfortunately the piezo injectors are very expensive (~$500 each), so swapping them on speculation isn't feasible. I wonder if there are services which can test/evaluate/recondition them?
Reply With Quote
  #41  
Old 05-02-2014, 01:03 PM
Registered User
 
Join Date: Jul 2001
Posts: 902
For not too much money you could dyno the car and have hard evidence of lack of power.

Rgds,
Chris W.
'95 E300D, 418K, not too much power, but enough
__________________
Objects in closer are mirror than they appear.
Reply With Quote
  #42  
Old 05-02-2014, 07:33 PM
65aircooled's Avatar
Registered User
 
Join Date: Dec 2013
Location: The Free Republic of New Joisey
Posts: 139
Quote:
Originally Posted by jcyuhn View Post
If the injector spray pattern/atomization is messed up, I can see the results being low power and poor fuel economy due to poor combustion - it kinda makes sense. But then I would also expect there to be an observable difference in the way the engine runs - either idle noise, or perhaps additional black smoke under acceleration.

Unfortunately the piezo injectors are very expensive (~$500 each), so swapping them on speculation isn't feasible. I wonder if there are services which can test/evaluate/recondition them?
No Piezo injectors in the CDI, still won't be cheap tho
__________________
W211 B-PILLAR TRIM PANEL REPLACEMENT
My Continental Tire Experience

By Land:
2005 E320 CDI (Unnamed as of yet)
2011 Toyota Tundra DC limited 4x4 "Big Red"
1965 euro import VW Beetle "Mojo"
By Sea:
22' Grady White Seafarer "SeaSun Pass"
Reply With Quote
  #43  
Old 05-21-2014, 09:48 PM
Registered User
 
Join Date: Sep 2011
Location: Port St. Lucie, Florida
Posts: 39
I am having a similar issue. When I first bought the car I was getting 32MPG in town. Over the last year or so the fuel economy has been slipping to the point now where I'm at around 26MPG for the same type driving. No codes in the computer according to ScanGage. Power has always been lower than it should be as indicated by the 9 plus second 0-60 time.

I keep track of the fuel economy on Fuelly.com so that helps in comparisons. Air, fuel filters, Glowplugs, thermostat(with temp sensor) have been changed. I cleaned the EGR valve, the MAF sensor, MAP sensor, and dielectrically greased most all electrical connectors under the hood in an attempt to maintain the vehicle and also to regain lost power & fuel economy. I even removed and reseated the fuses in the fuse box to ensure I didn't have any high resistance contacts there.

After reviewing the information online about how this injection control scheme works and the various sensor inputs I am wondering if I have a fuel temp sensor problem or perhaps an O2 sensor issue. Both those inputs help the vehicle decide how much fuel to use by way of adjusting fuel rail pressure and fuel injection duration. I am currently testing my fuel temp sensor which according to CDI literature should be a NTC(negative temp coefficient) type. Not sure what the resistance per temp spec on it is however.


I wonder if the OP has considered checking or replacing the fuel temp sensor or perhaps the O2(Lambda) sensor?
__________________
Josh


2005 E320 CDI

2002 VW Jetta TDI

Last edited by Josh8loop; 05-21-2014 at 10:10 PM.
Reply With Quote
  #44  
Old 05-21-2014, 10:04 PM
65aircooled's Avatar
Registered User
 
Join Date: Dec 2013
Location: The Free Republic of New Joisey
Posts: 139
That's interesting. I have not had the car for long, in fact I have put less than 3K miles on it. My in town mpg's have always been around 26.5 to 28 and no more than 35 for highway, though I like to keep the go pedal on check to keep the EGR clean
I always thought the power was very good, but now I am starting to wonder if my car is suffering from the same and I just don't know better
I have no hard or soft codes either and the car runs as smooth as butter. I have read at least one member's comments about his car feeling like a "rocketship" and a "wild horse" that could easily slip out of control.
The only two cars I ever drove that gave me that particular feeling was a V10 Dodge Viper and a Porsche 911 turbo, and my CDI, although a very peppy car, doesn't even come close to that.
I hope my low mpg's are more related to my right foot rather than a motor related issue.
I'll be getting the bag of popcorn for this one...
__________________
W211 B-PILLAR TRIM PANEL REPLACEMENT
My Continental Tire Experience

By Land:
2005 E320 CDI (Unnamed as of yet)
2011 Toyota Tundra DC limited 4x4 "Big Red"
1965 euro import VW Beetle "Mojo"
By Sea:
22' Grady White Seafarer "SeaSun Pass"
Reply With Quote
  #45  
Old 06-06-2014, 03:39 PM
Registered User
 
Join Date: Sep 2006
Location: MA
Posts: 525
Just a data point.... I purchased my 05 in 2010 with 130k on the clock. It now has 229k and 99% of those 99k miles were on homemade BD.

Mine still accelerates like a bat out of he** just like it did the day I got it. I won't even let my 16yr old son drive it because of the acceleration.

I recently had some shifting issues, so I sprung for the aftermarket tranny dipstick and did fluid and filter change. Back to normal health now.

During some of my shifting issues, it was evident that the tranny seems to have the ability to restrain the engine. You may want to look at the tranny as a contributor to your problem.

On BD, I will get 32mpg all day long. The very rare occasions of pump diesel, it will get 37.

__________________
Mark in MA
05 MB E320CDI 358k Granite Grey Metallic
05 MB E320CDI 240k Black
05 MB E320CDI 180k Tectite Grey
99 Dodge 2500 Cummins 5sp 144k
83 MB 300SD 354k
62 Jeep CJ-6 120k
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 04:21 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page