What does fuel pressure sensor do if it was bad would it make your truck jerk want you running at even speed 30 or mph 40 1996 3.0 L 2wd?

yes it will but also your fuel presure regulator will do the same it is on your fuel rail on top of the motor it is round and has 1 vac line on it unplug the vac line off of it crank motor if gas is coming out of the regulator replace it