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.
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my car was running perfect then ran out of gas and so i put 20 in and made it home it aint been running sence it will start but when u try to give it gas sometimes it will hesitate and fire up to 3000 then go back down and die and other times it will die as soon as u hit the gas. also it only idles if maf is unpluged sonn as u plug it in it will die. and i dont kno if this has anything to do with it but there is no gas comeing back trough the return to the tank plz help me somebody
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Take the vaccum line off the fuel pressure regulator and plug it , then see if it runs better or worse. The vacuum side should be dry with no fuel in it if there is fuel on that side the reulator is bad. Also since you ran it out of fuel change the fuel filter because it has probly sucked up a lot junk from the tank. and that's why your not getting any or little return it just isn't pumping enough to even keep the car running so its not gonna send any back
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