Fuel tank sizes?

[RETed]

Originally Posted by Rotary Evolution

a common issue on the 2nd generation sending units is for the sending unit wires to fray near the bottom of the tank, throwing off their calibration at lower fuel levels.

i've been noticing it alot more lately as the cars are getting older.

I have no idea what you are talking about...

If it was indeed fraying, there would still be electrical contact.
When the wire completely broke, it would obviously lose signal.
Even if you had one wire still intact, the voltage is low enough that one strand of wire would still provide an adequate signal.

I just changed my fuel level sender in my 1987 turbo and saw no evidence of "frayed" wiring.
It was the potentiometer resistance sweep (common problem for any type of (non-sealed?) potentiometer) to degrade this way.


-ted