I have a jeep grand Cherokee Laredo 1999, I have a problem with the ignition coil code, I have changed the part already twist from auto zone the first time the engine was really powerless and this second time the motor still kinda of shaking. When goes down the acceleration but when you accelerate it kinda of run almost 90 good, my brother in-law he said that it might be the computer, but not sure about it, when I have this problem the truck was in running shape until it quit on me the first time, so that's the main reason we changed the ignition coil, also the first time we ran the diagnostic tool it marked PO 350,351,352, when we changed the ignition coil part it went down to two codes only PO350,351.the second time we changed the same part it only marked PO351 only, if anyone can help me out on this matter before I buy a new computer will be really appreciated!!