Remove it an take to a machine shop. Unless it has an obvious crack which can be seen with the naked eye, you will need to let them check it out. They can determine if it is cracked or warped.
If your truck is a 97 or 98 F150 4.2 V6 your head might not be cracked. The factory gaskets for the intake manifold on my F-150 didn't seal correctly and gave out at 120k miles and replacing the gaskets solved my problem.
Ford Dealer can help you. And tell you if there is anything wrong with your 2003 F150.
how do i program it
check lugnutpatterns.com the will tell u what u need to know
It uses a timing chain
No idea! If anyone knows how to do this please tell!
Get a wiring diagram and read it on the can.
Examine and read the dipstck, it will tell you what fluid to use.
An auto xray scanner can determine if a O2 sensor is bad.
LOOK ON THE BACK OF THE FUSE COVER AND IT WILL TELL YOU WHAT EACH ONE IS DOING. DOUG
The only positive way to tell if a cylinder head is cracked is to remove it and have a specialist pressure test it.
You do not list what year it is and expect an answer. All I can tell you is to purchase a Purolator Cabin Filter for your truck, as it comes with complete instructions.
there should be an axle code or the door jam. Then you can call your local ford dealer and the can tell you, but some of the owner manuals had a list of the axle codes in them.