Engine shutting off while driving

Hi,

It sounds like it could be related to the crankshaft position sensor. When they start going bad, they are affected by heat. Once they cool off, they can work again. Interestingly, oftentimes they don't set a code.

Take a look through this link. It explains common symptoms of a bad crankshaft position sensor. See if anything mirrors what you experience.

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

If that seems like the issue, here is a link that explains how in general one is replaced. To confirm, check to see if there is spark to the plugs or if there is an RPM signal using a live data scan tool.

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

Here are directions specific to your vehicle. The attached pic correlates with the directions.

2008 Ford Truck Explorer 4WD V6-4.0L
Removal and Replacement
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Crankshaft Position Sensor Service and Repair Removal and Replacement
REMOVAL AND REPLACEMENT
CRANKSHAFT POSITION (CKP) SENSOR

Pic 1

Removal and Installation
1. With the vehicle in NEUTRAL, position it on a hoist.
2. Disconnect the crankshaft position (CKP) sensor electrical connector.
3. Remove the bolt and the CKP sensor.
- To install, tighten to 10 Nm (89 lb-in).

4. NOTE: Be sure the sensor wiring is routed away from the battery cable.

To install, reverse the removal procedure.

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

Take care,
Joe