The gauge on my '91 124 reads fine above 1/2. Below that it becomes erratic. The light works fine, of course, since it is operated by a different signal on the sending unit.

I replaced the sending unit and it made NO DIFFERENCE. I also tried a different gauge and that made no difference either. I cleaned tightened every ground connection in the car that I could find. That made no difference either.

So, I guess there are ghosts in my electrical system.

YMMV

__________________
2012 E350
2006 Callaway SC560

I have had this exact problem on my 300E and the 280E before it. Identical symptoms. I even contacted VDo about it. Replaced sender on both, didn't help. There was talk of a cold solder joint on the instrument cluster behind the fuel gauge that could fail over time, but I never got around to testing it.

__________________
Chris
2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
2007 GL450 4Matic - 62,000 Km - Obsidian Black Metallic, black leather, all options
1998 E430 - sold
1989 300E - 333,000 Km - sold
1977 280E - sold
1971 250 - retired

"And a frign hat. They gave me a hat at the annual benefits meeting. I said. how does this benefit me. I dont have anything from the company.. So they gave me a hat." - TheDon