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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-10-2001, 12:20 PM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
95 C280 Stalls out and/or very weak acceleration

My recently purchased C280 stalls, and/or spits and coughs when I try to accelerate. It's also very weak in acceleration. After doing this for a week or so, it stopped doing it and I was lulled into a false sence of security until it started happening again a couple of days ago only this time the 'check engin' light is glowing as well. I've done nothing accept change the fuel filter. That seemed to help some but the problem is still there. Thanks, Bob H
Reply With Quote
  #2  
Old 08-10-2001, 01:28 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Sounds like the engine is running very lean! IF you have the check engine lamp computer scanned for codes & there is a code P0 170 fuel trim or P0 105 air mass sensor code, you will need a new air mass sensor. MB part number 000-094-05-48(list IS $355 & $255 REMAN).
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #3  
Old 08-10-2001, 08:13 PM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
More information

I just this hour return from my mechanic (non-dealer) and he reports that he's getting a code 31. Apparently this at least in part agrees with your assessment because it mentions in the text that the car is running too lean.
It gets more complicated for me at this point because he then said that he was confused as well because he couldn't clear the code. I hope you know what that means because he tried explaining that he should be able to tell the computer to clear that code and he wasn't able to do that. So I asked what's next? He said that he had to check every code individually and that was a very time consuming processs. That sounded like a code for expensive and had him button it up until I could submit this on this forum. Here it is. Is there any hope?
Bob H
Reply With Quote
  #4  
Old 08-10-2001, 08:43 PM
Registered User
 
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Be sure he has a digital code reader. This will have the live data you need. If he doesn't, go to someone else.
__________________
Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS
Reply With Quote
  #5  
Old 08-11-2001, 10:08 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The overvoltage relay is a key part BUT doesnt cause this type of running problem. OBD2 code would be P0170, I have no idea what code 31 means.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #6  
Old 08-12-2001, 11:42 AM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
'95 C280 update

I'm still vacilating about what to do. If you have no idea what a code 31 is then it really it really casts doubt on my technician's credibility. I have'nt asked him if his computer is digital but he did assure me earlier that it's the latest state of the art analyzer. I'm not really in the mood to spend another $225 to another tech another, independent analysis, but it looks like either that or take a chance on a O2 sensor which seems to come up in these discusions. I hope I can afford to be in the company of MB. Bob H
Reply With Quote
  #7  
Old 08-12-2001, 04:28 PM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
I went to try and see if I could find out what Code 31 meant... and on an M104 motor (93-97), it said that code 31 was Not Used. This might not necessarily be the correct info though. Try searching yourself and see what you come up with...

http://www.autolib.diakom.ru:8000/CARS2/pribor/cs1000/manual/cs1000_mb.pdf

You can also try searching at http://OBDII.com and see if you can come up with anything... although I'm having trouble searching, I think because you need the full code.

Anyway, good luck, and keep us posted.
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
Reply With Quote
  #8  
Old 08-13-2001, 05:07 PM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
My mechanic (technician these days) says his computer is digital and that the machine tells him it's code 31 . He also mentioned something about 035, - fuel adaptation too lean. Not being a native, he's kind of hard to understand sometimes. He insists on his interpretation and acts as if he knows what he's doing but not being able to get any confirmation from the forum is very unnerving. I'm going to have to make a move at some time soon so I hope you will all keep trying to come up with a good course of action for me. Thanks Bob H
Reply With Quote
  #9  
Old 08-13-2001, 05:20 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Bob, sounds like he is reading the codes from the fuel system computer!! NOT the diagnostic computer that registers the check engine fault codes. There is a code 31 in the fuel computer & that is for a faulty front O2 sensor. & code 35 means that the fuel system is too lean. HAVE him scan the DM (diagnostic ECU) at pin number 19 to get the correct check engine info!! STILL sounds like a faulty air mass sensor!! VERY easy to install, less than 5 minutes.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #10  
Old 08-13-2001, 08:44 PM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
air mass sensor/meter?

Thanks MB Doc, you've given me a starting point. One more thing please. When I went to the parts shop to check on an air mass sensor the only item that came up was a air mass meter. Are they the same thing? Is it possible to get a part numbe just to be sure? Thanks again, Bob H
Reply With Quote
  #11  
Old 08-13-2001, 10:10 PM
Registered User
 
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Yes they are the same. There is only one on your car.
__________________
Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS
Reply With Quote
  #12  
Old 08-14-2001, 02:57 AM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
Decision time

I think I'm ready to dive in. Replacing the air mass sensor is a fast and easy job. I'll take your word on that. But before I put out the $250 for the part, could you describe briefly what's involved, where is the part I'm looking for, and anything else that I may need to know? Adjustments, etc. I'm not a total idiot mechanically but it doesn't take long in these newer engines for me to feel like one. Thank you for your patience and your help. Bob H
Reply With Quote
  #13  
Old 08-14-2001, 09:07 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The air mass sensor is mounted in the air charge tube just about 1 foot from the air filter assembly. 1 hose clamp & 2 quick release clamps. The electrical connection comes loose by twisting CC/wise. Iposted the CORRECT part number on the first reply-000-094-05-48 or 000-094-05-48-88(reman).
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #14  
Old 08-16-2001, 05:16 PM
Registered User
 
Join Date: Jul 2001
Location: Molalla, Or
Posts: 60
Replaced Air Mass Sensor

MB Doc
Well I finally bit the bullet and replaced the air mass Sensor. I wish I had better news to report. The 'check engine' indicator still comes on. Although I've only driven the care for a couple of miles since replacing the part, it does seem to run better. (a little slugishness at first but, I assume that can be accouted for by the fact that it's been sitting for a week or so) I hope it's not just wishful thinking.
Any other thoughts about the 'check engine' indicator? Thanks, Bob H
Reply With Quote
  #15  
Old 08-16-2001, 06:12 PM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The check engine lamp must be scanned to shut the lamp off, also after replacing the part you must drive at least 40-50 miles before the correction factor will return to normal!! You can turn off the lamp by removing fuse 31 or 32 (dependant on production date of car) with the key removed. IF you feel that the engine has better performance then you are on the right track.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Weak A/c On A 97 C280... vcci Tech Help 7 06-04-2004 04:33 PM
C280 Bad Miss on Even Slight Acceleration DougC280 Tech Help 4 05-10-2004 10:43 PM
96 C280 stalls on hot start orvals Tech Help 0 04-28-2004 03:46 AM
c280 engine stalls HELP Shoebox Tech Help 18 02-02-2004 04:04 PM
95 c280 bang/bump sound on acceleration barkford Tech Help 1 02-04-2003 01:09 AM



All times are GMT -4. The time now is 01:20 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page