Hi i have a 1994 f150 with the 4.9 il 6.I have replaced rotor cap plugs and wires made sure timing is 10btdc and replace all the broken/vulcanized vacum lines i could find .i have replace the egr solenoid checked the egr replaced fuel filter, pump, and pressure regulator and checked voltage on the tps.if I ease into the gas pedal it will acelerate ok but if I try to get in to it if will chug out and die. I haven't been able to pull codes by either the paperclip method or with a tester all it will do is flash so rapidly I can't count it and go solid Please help