4.0 dies ??

Hopefully someone has experienced this or knows the cause. The engine will die while driving, when I try to restart it, it will start, sputter, and die again. Eventually after several retrys and holding the RPM's above 4k on restart it will stay running and idle normal again. Both sensors on the throttle body are new. Any Ideas?? CPS maybe??

Yup, It sounds like the CPS is kaput. Replace it. If it's old, it'll fail sooner or later anyway if it isn't already.