I have a 2008 f 250 super duty gas v10 i have never had problems with it start always starts right up and strong. After coming out of the story today I tried the remote start and it tried to turn for a couple seconds and stopped. I replaced the battery and starter and still nothing. i hear the relay when trying to start with both keys or remote start but nothing from the starter all lights are working . Any feed back and advice is appreciated greatly.

 

You say you have a remote start system in your truck? If that is the case are you sure you didnt accidentally put your truck in "Valet Mode"? If you truck is in valet mode and you try and start it, it wont start, your lights will act as normal but the truck will not start while it is in that mode.

Check your users guide and look and see how to take your truck out of valet mode. Follow the instructions carefully as it can be a little tricky with some systems.

You also may want to check your hood pin and make sure that is okay. sometimes they go a little wonky after a while and even the hood is close it shows the connection as open and wont allow the vehicle to start.

There is also a chance your remote could have lost its programming, it doesn't happen often but it does occur. Use the second remote to try and start it. and see if that works. You might also want to try and change the battery in the initial remote your were using as the battery could be weak.

It is possible when you changed your battery in the truck that the remote starter either lost it's programming or is in a service mode which would mean a trip to the place where it was installed or to Ford if it is a factory system.

Your users manual should have a trouble shooting section in it that may help you as well. I would start by checking the things listed off in my post and go from there. Hope this helps