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
  #1  
Old 07-24-2013, 11:04 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
99 e300 td sluggish with major turbo lag

Hi all,

I have my 99 e300 diesel and I had chasers fuel problem for over a year. The lines in the tank were pittedand leaking at certain spots in the tank. This quieted it down a lot. However I believe this problem is fuel related. There is a fuel leak coming from the plate on the side of the IP also there are bubbles in the lines after the fuel filter. I have new genuine mb filters brand new and all new lines from the tank to the pre filter all new. And new gas tank as well. Recently the clamps that hold the muffler together right before the cat busted apart and bent the clamp. Possible too much pressure? I'm curious As to what diagnostic route I should be goin on? Anything I should check? Thanks my symptom is extreme power loss under heavy acceleration until the turbo kicks In way late and then it will go. It so sluggish it's almost dangerous when first taking off


Last edited by pnolet; 07-25-2013 at 11:00 AM.
Reply With Quote
  #2  
Old 07-25-2013, 12:01 PM
Registered User
 
Join Date: Jan 2005
Location: Chicagoland
Posts: 433
Have you checked your vaccuum lines going to the turbo? A leaking vaccuum line can cause your turbo to engage later in the RPM band.
__________________
Ed
-1984 Mercedes 190D 2.2 5-speed gray market(bought@30,000 miles) (Sold back to original owner@170,000 miles)
-1999 Mercedes E300DT (245,000 miles)
-1999 Mercedes S500 Grand Edition (80,000 miles)
Reply With Quote
  #3  
Old 07-25-2013, 02:25 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
Vacuum lines are good. Could it be a bad turbo. I'm working on a Volvo xc90 twon turbo at work And the turbo leaks so much it smokes like hell. Mine doesn't smoke that much but how can I check/test the turbo?
Reply With Quote
  #4  
Old 07-25-2013, 03:01 PM
Registered User
 
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
Check transducer and wastegate, then for a plugged/restricted cat.
__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
Reply With Quote
  #5  
Old 07-25-2013, 06:26 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
One problem that this model car has experienced is a plugged cat. This will slow the turbo by quite a bit. The only way I know to test the theory is to remove the V band clamp so there's a gap between the turbo exit and the pipe an drive it that way for a test run.

Yes it'll be kind of loud and soot up under the hood a little but if it goes like a scalded dog, there's your answer.

Also need to eliminate all the bubbles.
__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
  #6  
Old 07-25-2013, 10:27 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
The clamps at the cat busted it off so it already had that gap, so to further prove that I took the cat back exhaust off including cat. Still no change. How do I check the transducer or waste gate and where are they? Thanks
Reply With Quote
  #7  
Old 07-25-2013, 10:29 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
Can the ip itself leak? Not the delivery valves, sov or lines but the actual pump itself? I Ask because it leaks a thin black fluid around there looks like a mixture of oil and fuel smells like it too. But I still can't figure that out. Also the line from pre filter to fuel thermostat leaks down and is empty immediately after turning the car off. So it has to be leaking down somewhere. What about a faulty ip what are this symptoms?
Reply With Quote
  #8  
Old 07-25-2013, 10:31 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
There are 2 transducers, one for the turbo and one for EGR. They are identical so you can swap them for testing. The turbo transducer is located near the turbo inlet and the EGR transducer is located on the left side of the car, near the shock/spring tower.
__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
  #9  
Old 07-25-2013, 10:35 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
Quote:
Originally Posted by KarTek View Post
There are 2 transducers, one for the turbo and one for EGR. They are identical so you can swap them for testing. The turbo transducer is located near the turbo inlet and the EGR transducer is located on the left side of the car, near the shock/spring tower.
The black valve with the vacuum lines to it and the turbo? Or is that something else?
Reply With Quote
  #10  
Old 07-25-2013, 10:46 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
Black valve, 3 vacuum lines and an electrical connector. One line is a vent, one goes to the wastegate and the other to the vacuum source.
__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
  #11  
Old 07-25-2013, 11:27 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
Ill try tomorrow and post results
Reply With Quote
  #12  
Old 07-26-2013, 07:34 AM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,346
Hey Evan do later manuals have a test procedure for the transducers? I've thought about using them to control vents.
__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42
Reply With Quote
  #13  
Old 07-26-2013, 02:45 PM
Registered User
 
Join Date: Feb 2004
Location: Walnut Creek, CA & 1,150 miles S of Key West
Posts: 4,874
FYI - The prefilter fuel line draining back to the fuel thermo is normal. Ignore it.
__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)
Reply With Quote
  #14  
Old 07-26-2013, 04:09 PM
Registered User
 
Join Date: Jun 2011
Posts: 59
Ok is there anything else I can check for the source of the sluggish acceleration
Reply With Quote
  #15  
Old 07-26-2013, 06:07 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
If you have access to a scan gauge, you can connect it to verify the boost levels and the MAP sensor operation. Conversely, you can also "T" a standard pressure gauge into the MAP sensor feed to measure boost.

Also, when the car is idling, remove the vacuum line on the waste gate and connect a vacuum gauge to it to verify there is 100% vacuum present. As a test, you can also connect the vacuum supply line going to the transducer directly to the waste gate so you get 100% boost all the time. If you regain your performance doing this, you can take a closer look at the transducer.

Rolf,

The transducers are variable vacuum devices controlled by a PCM signal from the ECU. If you can do with a "on/off" control rather than variable one, you might do well with an EGR purge or "switchover" valve.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Last edited by KarTek; 07-26-2013 at 06:20 PM.
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 01:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page