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 > Tech Help

LinkBack Thread Tools Display Modes
Old 08-08-2006, 06:32 AM
Registered User
Join Date: Jul 2006
Location: Austin, TX
Posts: 15
95 E420. Fuel gauge acting weird

I recently bought a 95 E420. The car is in very good condition but it has a few minor problems. Some of them I have been able to solve by searching through the threads on this forum and finding the solutions and hints that enabled me to fix them.
However, one of the remaining problems is the fuel gauge in the dash. It tends to display a random fuel level that doesn't reflect the actual level. At first I thought the sending unit in the tank was defective, but just before I fueled up yesterday the gauge showed a full tank while the light for low fuel level came on to warn me. Now I'm not so sure anymore that the problem is still the fuel sender in the tank. Does anyone have experience with this phenomenon?


Reply With Quote
Old 08-08-2006, 08:22 AM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Since that is a simple resistance circuit you have only 2 parts & the wiring between them...the sending unit is much less $$$ than the guage. either start there or try different resistors to see if the guage is the problem.

The sending unit should measure between 5 & 85 ohms..should be a SMOOTH change.
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
Old 08-12-2006, 01:25 PM
Registered User
Join Date: Jul 2006
Location: Austin, TX
Posts: 15
62 ohms on a tank that's about half to 5/8 full. That seems about correct.

Sometimes the gauge shows the actual level, other times the gauge shows "full". My guess is a bad contact in one of the connectors. Am I right?

Reply With Quote


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 06:17 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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