Saturday, February 14th, 2009 AT 8:30 AM
My truck hesitates when starting then has a lobe when idling replaced plugs wires with autolite and wires from autozone crankshaft sensor and fuel cleaner sometimes it idles rough took to dealership for diagnostic code po300, po304, po316 dealership said not o2 sensor or firing problem or fuel said could be intake gasket leak but friends and research lead to coil pack in my eyes everyone says catalytic converter could that cause a misfire and if so is anyway to test before buying couple really expensive catalytic converter or should I try gasket first or coil PLEASE HELP FORD CANT EVEN FIGURE IT OUT IN 6 HOURS