When I park my car and I try to turn it back on it wont start I have get a jump

The battery

i thought that's what you meant,but i had to ask to clarify..don't get that acid on your hands,arms,clothes,etc! you have the 5.0L engine,so get you a group 65 type battery,>>specs are>> 850 Cold Cranking Amps (1000 Cranking Amps) ***. 150 reserve minutes. this battery at the ZONE is $144.99 plus your old battery or go to Walmart,it's cheaper,made by the same company,with the same warranty,same CCA and it's $93.76 plus your old battery! 5 year warranty=3 years free replacement,prorated for 2 years!!

Battery k now but truck when its cold turns on once it warms up nd shut it off wont turn on checked relays nd fuses nd replaced coils how do i know if my ignition switch is bad when truck turns on it very rough

K battery k now but still when truck is cold turns on but when it gets warm wont turn back on checked gas pump relay nd fuses

you may have a failing fuel pump.fuel pressure needs to be tested with a fuel pressure test gauge..A little test you can try is,next time it does this,spray a little starting fluid in the throttle,see if it starts for a short period and cuts off after the fluid burns off,CAREFUL when doing this!.

Would the o2 sensor have anything to do with the problem and how can i check it

the only real way is a scan tool with live data and a good mechanic and this is not free..that is the only way,without guessing and throwing parts/money at it..