Fuel gauge problem - Page 3 - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 61 (permalink) Old 10-13-2011, 02:57 PM
BenzWorld Junior Member
 
Date registered: Dec 2009
Vehicle: 1996 E320 & 2003 ML320
Location: Mickelton, NJ
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have an 03 with the same fuel gauge issue. Has anyone had success using the# 5 fuse trick or is there something else I need to do to fix this on the 03?
Ed
triguy450 is offline  
Sponsored Links
Advertisement
 
post #22 of 61 (permalink) Old 10-13-2011, 04:18 PM
BenzWorld Senior Member
 
mbenz80's Avatar
 
Date registered: Dec 2009
Vehicle: 1999 ML320
Location: Chicago suburb
Posts: 441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Mine is working perfect now, that is because I had to replace the fuel pump assembly.
When I checked the old pump, contacts on sending unit were dirty, coated with soot.

1999 ML320 242K miles
2001 ML320 162K miles
2003 Lexus GX470 297K miles
1980 280SE W126 EURO 142mph top speed (sold)
mbenz80 is offline  
post #23 of 61 (permalink) Old 10-13-2011, 04:29 PM
BenzWorld Elite
 
megadamp's Avatar
 
Date registered: May 2008
Vehicle: 1999 ML320
Location: Manchester England
Posts: 2,721
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 69 Post(s)
Bernard do you think it would work if you cleaned it and put it back?.
megadamp is offline  
post #24 of 61 (permalink) Old 10-13-2011, 05:38 PM
BenzWorld Senior Member
 
mbenz80's Avatar
 
Date registered: Dec 2009
Vehicle: 1999 ML320
Location: Chicago suburb
Posts: 441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Fuel pump update - open hart surgery

Yes, it will.
But a bit of work have to be done to take the pump out.
I actually did that and put it back together but two days later my low fuel pressure problem came back, I could only do 35mph maximum. Sending unit and primary fuel filter built into pump are in first picture.
Here is my old fuel pump after cleaning, last picture is Pierburg fuel pump motor with bad (worn out) carbon brushes.
Attached Thumbnails
Click image for larger version

Name:	DSC01470.JPG
Views:	1168
Size:	60.7 KB
ID:	403386   Click image for larger version

Name:	DSC01471.JPG
Views:	770
Size:	59.8 KB
ID:	403387   Click image for larger version

Name:	DSC01472.JPG
Views:	580
Size:	58.9 KB
ID:	403388   Click image for larger version

Name:	DSC01548.JPG
Views:	300
Size:	60.2 KB
ID:	403389  

1999 ML320 242K miles
2001 ML320 162K miles
2003 Lexus GX470 297K miles
1980 280SE W126 EURO 142mph top speed (sold)

Last edited by mbenz80; 10-13-2011 at 05:41 PM.
mbenz80 is offline  
post #25 of 61 (permalink) Old 10-13-2011, 05:48 PM
BenzWorld Elite
 
Date registered: Jul 2006
Vehicle: 1999 E55, 2001 E320, 1990 560 SEC, 2004 ML350, 2001 ML55, 1995 S500, 1998 SL500, 2010 E550 Sport zoo
Location: NW Arkansas, La Jolla CA, Hong Kong
Posts: 6,744
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Fuel pump issue to the side for the moment, fuel sensor issues in the tank can often be recoevered using Stabil Blue (Marine Formula) in two tanks of gas over a 500 mile or so interval, the Stabil cleans up the fuel sensor in the tank... actually really good for that specific issue as well as prevents that specific issue.
fabbrisd1 is offline  
post #26 of 61 (permalink) Old 12-21-2011, 03:12 PM
BenzWorld Junior Member
 
Riqv's Avatar
 
Date registered: Oct 2009
Vehicle: 2000 ML55 AMG
Location: Pleasant Hill, CA
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Does anyone know where exactly Fuse #5 is in the RSE2 Fuse holder for a 2k ML55?
Riqv is offline  
post #27 of 61 (permalink) Old 12-22-2011, 01:06 AM
Lifetime Premium Member
 
Date registered: Aug 2006
Vehicle: 02 ML320 06 ML500
Location: Bronx, New York
Posts: 13,345
Mentioned: 10 Post(s)
Tagged: 1 Thread(s)
Quoted: 660 Post(s)
Lifetime Premium Member
Here it is.
Attached Images
 
43sqd is offline  
post #28 of 61 (permalink) Old 12-22-2011, 01:42 PM
BenzWorld Junior Member
 
Riqv's Avatar
 
Date registered: Oct 2009
Vehicle: 2000 ML55 AMG
Location: Pleasant Hill, CA
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
yet again 43sqd, thank you!
Riqv is offline  
post #29 of 61 (permalink) Old 06-06-2012, 03:54 PM
BenzWorld Newbie
 
Date registered: Jun 2012
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hi:

I have a 2002 ML320, which has been experiencing the symptoms of the faulty fuel gauge.

I tried the workaround of unplugging the fuse.

When unplugged the fuel needle (and other controls) continued to show levels. They did not "fall to zero" like when you turn the car off. What DID happen is that the car would not turn on. The ignition worked but then it seemed as if the fuel pump was off because it would not start.

Is this what is supposed to happen when unplugging the correct fuse for the workaround?

After unplugging and reinserting the fuse, the car of course worked normally, but I did not see any material difference with the behavior of the fuel gauge.

Does that mean that the only solution is to change the sender (with fuel pump)?

Thanks
Izwebusr is offline  
post #30 of 61 (permalink) Old 06-06-2012, 05:03 PM
BenzWorld Elite
 
megadamp's Avatar
 
Date registered: May 2008
Vehicle: 1999 ML320
Location: Manchester England
Posts: 2,721
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 69 Post(s)
My fuel gauge is at times a little off. But what surprised me was if i use texaco fuel which in the uk is owned by chevron, may be wrong but i think i am right, contains techron as a fuel additive. If i fill my tank my fuel gauge starts working better without a shadow, and it does not take long. The expense kills me though.
megadamp is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Vans/Trucks/SUV/Others > W163 M-Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
     
    User Tag List

    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode



    Similar Threads
    Topic Author Forum Replies Last Post
    The Ultimate Solution to the Fuel Gauge/Fuel Sending Unit Problem jengel111 W163 M-Class 4 03-10-2013 11:22 AM
    Fuel Gauge Problem BobGreenfield R170 SLK-Class 4 11-27-2007 09:04 AM
    Update on Fuel Gauge Problem: Got Fuel Pump Replaced Today tjhsiao W163 M-Class 4 10-25-2002 04:47 PM
    Fuel gauge problem Guest (MBNZ) R129 SL-Class 3 07-25-2002 06:42 AM
    Anyone with fuel gauge problem? Guest (MBNZ) W203 C-Class 2 11-04-2001 09:18 PM

    Posting Rules  
    You may post new threads
    You may 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 Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On

     

    Title goes here

    close
    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome