Folks, please be easy on me, I just joined. I've got a 1999 Grand Cherokee w/4.7L Anyways, I washed under the hood the other day, let it sit overnight, now it doesn't want to start. If you pester it long enough, it'll start, but shakes, etc., and won't rev much if any above idle. Changed plugs, no difference. Ideas? Coils? Cam sensor?

 

Found it! Crankshaft sensor went bad. OBD scan read code 0230.. $27.00 form AutoZone and I'm back in business.