my jeep just started stalling after warm up. at first i thought i ran out of fuel. after a min i would start her and she would start fine than dies. i had to get it towed to my house. the next day on a cold start i started her up with no problems after about 10 mins warming up it stalls. than i started again than stalls 2 mins later. what is causing the problem. i returned the 6 months old fuel pump and got a new one just in case that was the problem (still under warranty. haven't install yet. rainy day).
btw i just bought new coil. not yet install (it's 2am)
Is it showing any codes? If it runs cold and not warmed up, that most likely means a sensor has gone bad. When cold, the ECU controls the engine by using a fixed set of curves, (open loop). When the engine reaches operating temperature, the ECU monitors the inputs from the sensors, and adjust the fuel and timing accordingly, (closed loop). If one of the sensors has gone bad...well you know the saying, "garbage in, garbage out".
i put on new fuel pump and coil. i also tighten the o2 sensor (was loose). after doing those i started her up and notice the rpm needle acting up just before the car stalled.
i will try what UZI4U said about the cat. cant do it now gotta go to work