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

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..

How can check if my ignition switch is bad nd when it does turn on it turns on like with no power very rough

the ignition switch is mounted on the bottom of the steering column..are you talking about the ignition key cylinder?

Where you stick the key in

Ford key cylinders are so easy to change,less than 2 minutes! BUT,if you have the PATS Security chip in your keys(thick black keys)may say PATS on it(one of mine does)you will have to have the dealer reprogram them or your truck ain't going to start...