Just recently my fuel gauge started jumping around wildly.

For example, in the course of driving to work today, I saw swings from on E, to 1/4 tank. I've seen the effects of driving on a hill, and these are much more dramatic. Can someone explain where the sensor is in the tank and what could cause this?

Thx.


2000 CSVT #1172 of 2150 Toreador Red Birthday 1/4/2000 *Drop in K&N/FMS Wires/AutolitePP Plugs *Sylvania SilverStar/Indiglo Gauges *Pioneer Premier P730/Sound by Audiobahn *White HVAC Panel/Elky Mesh Mod/35% tint