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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
got an owner's manual?? and these foxes seem to wear out the sending units in the fuel tanks quite often. i replaced it in my 87 when i had it and my current 88. the teeth/ribs/whatever on them wear down, so the needle from the floater piece just runs right by it and it reads off. so.. its not the gauge, its your sending unit -- 9 times outta 10