Thanks @cruiser54 for the advice. Admittedly this is a parts cannon move, I’m a bit of a novice with engines. A couple mornings ago I drove my mj to town, parked it for 30 minutes and when I got back it would turn over but not start. Thought it was starter, tapped away at it still no start. A friend suggested plugs, and sure enough I changed just the plugs out and she fired right up. When I explained the situation to my mechanic, he’s worked on all my vehicles and he’s been honest and reliable, he said it sounded like my crank sensor was bad. Not really sure but I tend to take his word for it and he knows the truck pretty well. I’ll do the test and see what happens, I’ve never modified or done anything with what may be the original cps. Thanks again for your help!