by Paul Taylor » Sat Jun 05, 2010 5:32 pm
Hi all,
For the last 2 weeks my fuel gauge has just been reading "----------" all the time.
So today i decided to pull the sensor out of the tank.
Not knowing exactly what i would find, it turns out to be a alloy tube, about 20" long.
Once all the fuel drained out, i decided to strip it apart. There is a single screw on the bottom. Once this is removed, pull off the bottom cap.
You can then work off the top part, and gently pull the unit out of the tube.
There is a float inside that slides up and down a central shaft which has resistive windings.
The float is connected to the top part of the sensor by a lightly coiled brass wire.
This brass wire on mine had broke away from the top, so hence the circuit was broken.
With a carefull bit of soldering, i re-attached the brass wire to the top of the sensor. And then carefully re-assembled.
Now my fuel gauge appears to be working correctly.
Will know more over the comming weeks, after a few re-fills.
I will do a full computer reset when i fill the tank tomorrow.
2016 Mercedes A200d 2.2 AMG, 7sp DCT.
2003 Renault Laguna II 3.0 24v V6 Diamonique Auto.