Hey Scotty, got a question for you... I have an 07 Durango with the 4.7L (non Hemi) that was working fine. Then it all of a sudden just wouldn't start. The lights and radio works, but the starter won't turn over the engine. I at first thought it was a bad battery or connections, so I replaced it with a known good one. Still no worky.Then I took the starter out and used jumper cables to test the starter out. It didn't work so I thought the problem was solved. I bought then tested a new starter the same way, and the new one worked so I installed it, but the truck still wouldn't turn over!
I then turned the key to the run position and jumped the starter while installed. I could get the starter to crank the engine over, but it wouldn't fire. I even sprayed starting fluid in the throttle body just for funsies.
I checked the starter fuses and relays, they are good. I locked and unlocked the doors with the keyfob thinking it might be some weird factory security system issue I had heard of, I also put a Innova 3030 code reader on it, but no codes are showing up.