Removal of fuel sensor

[Shardsofglass]

Hi all, I'm a new member and was searching for information regarding the fuel tank sensor removal on my 92 W 124. it didn't seem that there was enough room between the tank and the rear parcel shelf to allow removal without using force, something I didn't want to do. I overcame the problem very easily I simply lay in the trunk, put my knee against the parcel shelf and with little force this allowed easy removal. A new sensor still hasn't fixed the flickering so I'm thinking now it must be a wiring issue. If anyone has managed to fix this, I would be glad to hear.

 

[gsxr]

Common causes for a flickering fuel level gauge is either the sending unit (which can be disassembled and cleaned internally), OR the gauge itself. It's unlikely to be the wiring, but you can check that for grins.

Welcome to the forum!

 

[liviu165]

I recently solved a similar issue on a different car that uses a similar gas level gauge. It turned out that it was the calibration trimmer that is located into the gauge, right under the dial. I removed the trimmer, pressed a bit with the fingers (with gloves so no electrical conductivity is added) and I measured the resistance between the pins that are included in the circuit: 86.4 Ohms. I soldered myself few resistors in series to build the same resistance and that solved the issue.

I need to do the same on the other car I have and I intend to make a writeup, but below is the picture of the part that causes the issue.




EDIT: Just like @Shardsofglass, first thing I did was replacement of the fuel sender in the tank. After I did that and noticed that it did not solve my problem, I decided to focus on the gauge.