I have a f150 with a 300. Has an idle problem. If you slowly push down the gas it does fine. Slam it to the floor bongs down and back fires. It had the duel tanks I replaced the front pump and fuel filter. But noticed it was filling up the rear tank. Looked it up saw the recall on the bad check valves. So I removed the rear tank and plunged the lines. It idles much better still has a quiver to it. Still back fires and bongs if you put it to the floor. Map senor is good. Could be tps? Or could the one pump not be pump up enough pressure?
Jun 10, 2014 at 3:10 PM
