1998 Jeep Grand Cherokee will suddenly stall and sometimes stall then shut off while I am driving. When it stalls I will push the gas multiple times and it does nothing for the first few times. After pushing the gas a few times suddenly it takes off and runs fine. Is this a fuel pump or sensor problem?

Okay, here\'s some more. My manual covers 1984-2001, but only Cherokee, not Grand Cherokee. It may help you though. The CPS detects flywheel teeth as they pass the sensor, conveying engine speed and crank angle to the PCM. So yours has to be mounted on the bell-housing, even with V-8 engine. The only test of it I can see is to check resistance between B and C terminals-marked on the connector. It\'s a three wire connection. The meter must indicate no continuity (infinite resistance or open). Of the several sensors the PCM uses to advance or retard ignition timing, the CPS is the only one that will stop the PCM from signaling to cut voltage to the coil primary--spark, you know. Both the crank position and the cam position sensor is used by the PCM to control and synchronize fuel injector pulsing. So, your stalling, I think, CPS, or ignition module, or PCM...or an even worse nightmare the wiring associated with them, Sean. that order of severity for me...keep looking for tests, you\'ll find it. Okay, here\'s some more. My manual covers 1984-2001, but only Cherokee, not Grand Cherokee. It may help you though. The CPS detects flywheel teeth as they pass the sensor, conveying engine speed and crank angle to the PCM. So yours has to be mounted on the bell-housing, even with V-8 engine. The only test of it I can see is to check resistance between B and C terminals-marked on the connector. It\'s a three wire connection. The meter must indicate no continuity (infinite resistance or open). Of the several sensors the PCM uses to advance or retard ignition timing, the CPS is the only one that will stop the PCM from signaling to cut voltage to the coil primary--spark, you know. Both the crank position and the cam position sensor is used by the PCM to control and synchronize fuel injector pulsing. So, your stalling, I think, CPS, or ignition module, or PCM...or an even worse nightmare the wiring associated with them, Sean. that order of severity for me...keep looking for tests, you\'ll find it.

By stalls, you do mean it completely shuts off every time, don't you? if it still runs, but only idles, I mean you are pumping the gas pedal while trying to start it? By stalls, you do mean it completely shuts off every time, don't you? if it still runs, but only idles, I mean you are pumping the gas pedal while trying to start it?

Thanks for the input. I get gas at multiple gas stations here in town so maybe I will try getting it from just one and see what happens. Thanks for the input. I get gas at multiple gas stations here in town so maybe I will try getting it from just one and see what happens.