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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.
just do a full tune up and do the fuel pump & filter while your at it. then you knock all of that stuff out at once and the next time you have a problem it is very unlikely that a tune up is required