Hello I'm new to F150 and this forum hope I can get some help here. I just bought a 2000 F150 with a 5.4 (125000 miles) last month and it has started missing real bad at idle and under power I don't get a check engine light. I replaced the plugs and checked the coils the primarys all read 1.0 ohms and the secondarys read any where from 5.4 to 5.6 kohms do you think all my coils are bad? My manual tells me .3 to 1.0 ohms on the primary and 6 to 11 kohms on the secondarys.