06 f250 powerstroke
 

I was having some trouble with my truck. It would run for a few miles then it would die and wouldn't start back up. I thought it mite be the fuel filters, so I got new ones. I also thought it mite be the icp sensor so I replaced that as well. Now it starts fine and seems to run great, untell I put it into gear and the rpms drop and it doesn't go into gear. I have know idea were to go from here. Any suggestions???

are you getting a check engine light. get the obd2 read on it that might help

Yes the check engine light is on.

Have you hooked up an obd2 and read why the light is on. If not than auto zone will do it for free. Oh and the light will stay on if the engine is not started but the key is on so watch for that.

Thank you all