99-03 7.3L Powerstroke Problems
Hello all. Having issues with my 99 7.3, it is an automatic with 4x4, non- catalyst. About 9 months ago I got a Check engine light with codes P1391 and P1396. I had a few plugs ohm poorly. I replaced all 8 plugs, valve cover harnesses, and one connector that was in bad shape. Everything worked...