97 grand cherokee misfires
 

Fuel pump replaced
crank sensor replaced
throttle position sensor replaced
tune up less than 10000 miles ago

after the engine warms up if i sit at a stoplight or try to get on the gass on the highway it spits and sputters....rpms go up and down out of control and it knocks and bangs itself up to speed......it runs fine cold!

please help!


it's the 6cyl