1994 3.5 Eagle Vision/Intrepid Driving car and engine revs fell then endine died. Tried starting back up and it would not start. Have checked for spark and 1 & 4 are not firing. Do have spark at 2 & 5, and 3 & 6. Changed ignition coil pack and get the same results. Could timing Belt have jumped. Tried used PCM that also did not help. Thanks