I have a 2001 Jeep cherokee sport 4.0l 4x4 that has a P0351 code. I have access to all data and have done all the test it says. Cylinder 1 and 6 have no spark so coil driver one circuit is my issue. When probing the terminal coming into the coil rail, The wire for driver one stays light on a test light constant while the other 2 drivers pulse. Ive checked resistance on power and ground side and they pass. any ideas? Also, it will not rev past 3000rpm it goes into fuel cutoff mode. If i cycle the key it will run for about 2 minutes normally. fuel pressure is constant 50psi. PLease help!!