Last month, after the fuel tank was about half full the gauge needle plunged below the E and stayed there. Since then each time I fill up it goes back to F and works normally for about 100 miles, then it drops to the very bottom again. Any clues about how/what to fix?
Thanks, Mark


'87 4Runner with factory alloy wheels, 225X15 tires, 4banger and 5spd, 26 mpg @60-62 mph, 225k