Will not start

Hi and thanks for using 2carpros.com.

A crank no start can be caused by many things, however, you already identified there is no spark. My first suspect is the crankshaft position sensor. Take a look through this link:

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

Now keep in mind, the problem doesn't have to be intermediate. When they fail, it can do exactly what you described. However, I am concerned that you heard a "pop" noise. In 35 years of working on cars, I have never heard one pop. Usually, they fail due to rust and begin leaking. So, please confirm for me it was the freeze plug.

Now, the easiest way for me to identify a bad crank sensor is by checking for an RPM signal with a live data scanner when the engine is cranking. If you don't have one, see if a parts stores will lend or rent one to you. Here is a quick video that shows how one is used:

https://youtu.be/b2IJGfImVvw

If you determine the sensor is bad, here is a link that shows in general how one is replaced:

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

Here are the directions specific to your vehicle for sensor replacement:

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The Crankshaft Position Sensor is located on the passengers side of the transmission housing, above the differential housing. See pic attached

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The crankshaft sensor is located on the passengers side of the transmission housing, above the differential housing. The bottom of the sensor sits above the drive plate.

REMOVAL
1. Disconnect electrical connector from Crankshaft Position Sensor.
2. Remove sensor mounting screw. Remove sensor.

INSTALLATION
1. Install sensor and push sensor down until contact is made with the transmission case. While holding the sensor in this position, install and tighten the retaining bolt to 12 N.m (105 in. lbs.) torque.
2. Connect electrical connector to Crankshaft Position Sensor.

Let me know if this helps.

Take care,
Joe