01 September 2025

Fuel Gauge repair

 

The fuel gauge is located within the oil pressure, ammeter cluster. The fuel gauge has never worked since I owned the car. The wiring to this has always been suspect and suspected this was probably the main issue. 


The gauge is held in the back of the cluster by a couple of screws. The printed cover on the gauge is held in place by a couple of burrs, I tried lifting these without success. I ended up drilling them out to release the cover.



On removal it is clear someone has been here before as the bobbins are facing the wrong way, suspect someone has loosened the bobbin coils and they rotated snapping the wires from the soldered joints.


Thanks to MGA Guru for the image below. 


With a steady hand and a pair of magnifiers and dental hook we measured the resistance across each part of the gauge and re soldered the joints. The wires are tiny.. I can't even see them without magnifiers.

Cleaned the contacts with emery paper and then re-assemble. 


150 Ohm resistor. Showing signs of heat but still functioning


Testing 





No comments: