July 19, 2005 at 5:48 pm
#59502
Frank,
Sorry, I missed your post on the 13th, but I’m glad to hear that you found the problem.
When you open up the sender unit, you will find that it is very simple; just a wire wound resistor with a contact that is moved by the float arm. After 40 years, some of this stuff just gets tired.
In my opinion (yes, I know), the vast majority of electrical gremlins in Alpines and Tigers are caused by poor grounds. Instead of using ground wires, Rootes mostly depended on the mounting fasteners to provide a ground circuit (or not, as the case may be). Of course, after 40 years, the wiring harness also tends to be a little “crunchy”, but that is another issue.