Transmision bad
 

Ok i have a 2005 f150 4.6 automatic 4x4 and i was coming home the other day and i went to change roads and when i let off the gas the trans made a klump noist then would not do much it dont have enough power to pull out hardly ant the screen popped up trans fault and the od light was blinking. so do i just need to get a trans and put in it or do i need to take it to ford to let them say something asout it no warranty

You need to have the codes read before changing anything. It could be something minor.