renix stalling need help please

ok so just the other day all the sudden my jeep stalls so i try to start it an it started but i put it in gear and it just stalled so i started it up and kep it at highre rpm's (4500)and it would run fo a littler bit but once it dropes below it starts to miss fire and stall and it just reapeats everytime i start it so i just put a new cps in it and it still is doing it and i checked i got plenty of spark and good fuel pressure
so if anyone has run across this problim or fixed a problim like tis i would greatly appreciate any info on what it is or might be
thank you
alec

check the IAC motor. maybe the throttlebody is gummed up

buy a multimeter, check your tps, cps, map, mat etc...
get a fuel pressure guage and check fuel pressure.
i just did all of this and found out just about everything on the jeep is fine. including my grounds, so now im moving to injectors and the coil.
clean out the throttle body
check all injector connections,
do a tune up