I'm wondering if it is at all possible to clean the electrical contacts of the sending unit because of the effect of what you guys call "olephins". I have a sending unit on my 1983 F-150 that when if I hook it up outside of the tank and move the float up and down, my gauge will work correctly. However, after a day of working perfectly inside the tank, the gauge all of a sudden stopped working and now I am wondering if it can be cleaned to a state that which it may function again. As far as the unit itself, it is in good condition, no rust or broken contacts, etc. The two male connectors on top of the unit that the round rubber female connector plugs into is in good shape, as is the other connector. This afternoon, I also tried dropping the tank enough to pull off the connector and wire up a seperate ground off the frame of the truck to the sending unit. This did not make any difference, and I have already replaced both wires running along the frame up to the gauge, so I know there is no problem there.
Anyway, can it be cleaned, and if so, what should I use to do it?
Thanks for any help Sharky