Hello I need help I have a 99 gt with a mis fire I had all the cool packs change new fuel rails new fuel filters plugs wires and anything I could of thought of to fix a misfire but it's still here I need help thanks guys
I went to local ford dealership had them in stay everything it was good as new then about a week later it came back I went to ford freaked out got my money back and the cel just came on so I'm bringing it tommorow to check the codes