all right here it is I have a 92 xj 4.0 5 speed.It fires right up and run great for about hour or until u start whippen on it,then u will be giving it steady throttle and it will start cutting out in short split second burst intermittenly,as if the battery is being disconnected for a slit second.and will eventually die and wont start until it sits for a while(half hr to 45 min).and will be fine for bit and then the same.i have replaced every sensor i know of,replace fuel pump,checked all battery connections and connection in general.Cant figure it,PLEASE ANY IDEAS OR HELP OF ANY SORT WILL BE WELCOME IM AT MY WITS END THANKS

 

You said you have replaced "every sensor I know of". Best to detail exactly what you have replaced so we know.

How about your crankshaft position sensor and ignition coil? They are the #1 and #2 suspects for thermal (heat related) failure. Cam sensor inside distributor is also in play.

 

Have you replaced your fuel filter?

 

Lets see at one point or another in the last year i have replaced the crank position sensor,map sensor,the two on the throttle body,the computer,the fuel pump and filter,entire distributor,cap ,button,wires ,plugs.Not sure if i ever did the ignition coil,so that will be next.Thanks for the responses,that would be cool if it were as easy as replacing the coil.Got my fingers crossed,if thats not it i will gladly take any more suggestions.
THANKS