I'm hoping someone can help me. My 2000 4.4 triggered the SES light last week. The code was P1340 which is a Misfire on multiple cylinders at start-up. The light was on for a day or so (5-6 starts) then went off. Over the past week it has came on and off in the same pattern. I have noticed no problems with starting or performance. There have been no other codes triggered. Could this be related to the cam pos sensors? I replaced the front passenger side about 1500 miles ago. My thought was to buy another sensor and rotate it thought each cps position and see if it resolves the problem. Anyone had experience with this???