Originally Posted by f250_02
yea im not to familiar with powerstrokes so what are GPR's and CPS
GPR= Glow Plug Relay. If you look in the 7.3 tech files, there's a thread that shows you where it is on top of your engine. The CPS is your Cam Position Sensor. I figured since your truck has such low miles, it might not have been replaced yet. Your CPS is just above your crank pulley, has a wiring harness running to it, & is held in with 1, 10mm bolt. There's a recall on these & you can get a new one from Ford for free if it hasn't been done yet. Since your truck won't start, you might have to go to Ford or IH & buy one.