jorge.cardenas1
New Member
I have a 2004 expedition 5.4l, it has a misfire on cylinder number 4. I changed the coil pack. Still nothing runs the same. I disconnect the injector and coil and there is no diff on how the engine run. I connected a noid light to the injector and its sending the singal, also connected it to the harness side of the coil connecter and i have signal. Check with an oscillocope and its 40v approximatly and the other are at 80 what do you reccomend i check next?
