Stalling, no light warning

Hi,

Does this seem to happen when the engine has warmed up only? If so, it may have to do with the crankshaft position sensor. When they start going bad, they can fail based on heat.

Take a look through this link and let me know if it seems to mirror what you experience:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

If you feel that could be the issue, here is a link that explains how, in general, one is replaced:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

The location of the one on the Jeep is a bit different. This one will be mounted on the transmission bell housing. Here are the specific directions for replacement. The attached pic correlates with the directions and shows location.

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2004 Jeep Truck Grand Cherokee 4WD L6-4.0L VIN S
Procedures
Vehicle Powertrain Management Sensors and Switches - Power-train Management Sensors and Switches - Computers and Control Systems Crankshaft Position Sensor Service and Repair Procedures
PROCEDURES
REMOVAL

CKP Sensor - 4.0L 6-Cylinder Engine

See pic 1

The Crankshaft Position (CKP) sensor is mounted to the transmission bell-housing at the left/rear side of the engine block. The sensor is adjustable and is attached with one bolt. A wire shield/router is attached to the sensor.

1. Disconnect sensor pigtail harness (3-way connector) from main engine wiring harness.
2. Remove sensor mounting bolt.
3. Remove wire shield and sensor.

INSTALLATION
The Crankshaft Position (CKP) sensor is mounted to the transmission bell-housing at the left/rear side of the engine block. The sensor is adjustable and is attached with one bolt. A wire shield/router is attached to the sensor.

New replacement sensors will be equipped with a paper spacer glued to bottom of sensor. If installing (returning) a used sensor to vehicle, a new paper spacer must be installed to bottom of sensor. This spacer will be ground off the first time engine is started. If spacer is not used, sensor will be broken the first time engine is started.

1. New Sensors: Be sure paper spacer is installed to bottom of sensor. If not, obtain spacer PN05252229.
2. Used Sensors: Clean bottom of sensor and install spacer PN05252229.
3. Install sensor into transmission bell-housing hole.
4. Position sensor wire shield to sensor.
5. Push sensor against flywheel/drive plate. With sensor pushed against flywheel/drive plate, tighten mounting bolt to 7 N.m (60 in. lbs.) torque.
6. Route sensor wiring harness into wire shield.
7. Connect sensor pigtail harness electrical connector to main wiring harness.

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Let me know if this helps or if you have other questions.

Take care,
Joe