Have you scanned the system for fualt codes? An O2 sensor will never cause the engine to stall out like this, NEVER.
SOURCE: 2000 grand jeep cherokee dies while slowing down
Its not unusual for the crankshaft sensor to intermittanly fail. The crank sensors are not real expensive and are not extremely hard to change.
The Crankshaft Position Sensor (CKP) is mounted into the engine block above the starter motor. Engine speed and crankshaft position are provided through the crankshaft position sensor. The sensor generates pulses that are the input sent to the powertrain control module (PCM). The PCM interprets the sensor input to determine the crankshaft position. The PCM then uses this position, along with other inputs, to determine injector sequence and ignition timing. The sensor is a Hall effect device combined with an internal magnet. It is also sensitive to steel within a certain distance from it.
Below is a pic of the sensor location.
Good luck.
Regards,
SOURCE: jeep grand cherokee stalls after warming up
You need to check components again when the engine is hot and in no-start condition, otherwise, you will get bad info...obviously whichever part is doing this works fine cold. ones that react most to heat are crank pickup, ignition coil and the fuel pump.(bad ones get hot and bind up)
SOURCE: 99 jeep cherokee sport suddenly dies with no warning.
I had a similar problem with my 99 Cherokee, it would start and then would not idol without holding down the gas, after it warmed up it would run fine for the most part it would sometimes die at a stop light or sign. I was told to replace the blower motor for the carburetor, works great and gas mileage improved.
SOURCE: 1999 4.0L Jeep Grand Cherokee shuts down after 20-30 minutes.
I'd suggest the ignition control module, however I'd have a certified mechanic check it out just in case...
SOURCE: 95 jeep wrangler: gauge indicates 0 oil pressure
Wire on oil sending unit may have fallen off or sensor itself may have gone bad. Check both. If engine has no tapping noises, likely it's not a pressure problem.
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