Luxury

2001 Ford Taurus Flex Fuel 3.0, 117,000 miles. Fuel gauge reading erratic. Gauge fluctuated between full and empty no matter what the fuel level was. Fixed with FFV module replacement.

The FFV module is mounted with one bolt behind and to the bottom left of the climate control module which interfaces the sender with the fuel gauge. It is a 6 pin rectangular module (5 wires are pinned out on the connector side) encased in epoxy, part # YF1U-14A069AA. You do NOT have to remove climate control / radio assembly to access/change this out. Simply get to it from underneath.

$44 from Ford, maybe less elsewhere. Fixed the problem. Cheaper than replacing a $250 sender and a heck of a lot easier (providing you have tested resistance from the sender and found it was good)

Keep in mind, again, this is a FLEX FUEL model, so you may not have this on a standard 3.0.