New crank positioning sensor

Hi,

As far as a relearn, the only thing is a variation relearn. If you replaced the sensor, the engine should start and run.

Note: I made the assumption this is a 6 cylinder. If that is incorrect, let me know.

If you look at the attachments below, they are the variation relearn procedures for this vehicle. Take a look through this link and let me know if you have questions.

Take care,

Joe

See pics below.

Hi,

When this happens, does it start right back up or do you have to wait? It could be related to the ignition control module. That is the component the coils mount to. If that is bad and the vehicle doesn't immediately restart, check for spark at the plugs. Here is a link that explains how that is done:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

I attached a pic below and highlighted the ignition control module.

Let me know.

Joe

See pic below.

Hi,

Okay, then my first suspect is the ICM. Check for spark when it won't start and let me know. If there is spark, see if the engine starts with starting fluid and then stalls.

As far as the sensors are concerned, you have no idea how much I agree with you. Between sensors, modules, the can-bus, and everything else, I'm becoming an electrical engineer. LOL

Let me know what you find.

Joe

Hi,

I couldn't agree more. Did it have spark when it wouldn't restart? If it did, we have a fuel related issue.

Let me know.

Joe

Hi,

The relearn for the crankshaft position sensor wouldn't cause this. If you still have spark when the engine stalls, we have a fuel-related issue.

When this happens, have you ever noticed dark smoke from the exhaust or a fuel smell? Also, have you checked your fuel pressure to make sure it isn't too high or too low? If it is too high, it could flood. The idea that you need to pump the throttle could indicate this type of issue. When you press the pedal to the floor, it shuts down fuel injection to eliminate flooding. When you indicated pumping it, that thought came to mind.

Here is a link that explains how to test fuel pressure. Consider doing this.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Also, there is a vacuum hose to the fuel pressure regulator. Disconnect it and check to see if there is fuel in it. If there is, the diaphragm in the regulator is bad.

Let me know what is found.

Take care,

Joe

Sounds like a plan. Let me know what you find.

I hope you had a good Memorial Day as well.

Take care,

Joe

Hi,

I'm not sure if there is a sensor that would be directly related to the fuel pump. If a crankshaft position sensor is failing, often they are adversely affected by heat and shut down. If the PCM doesn't see ignition, it will then turn off the fuel pump to prevent damage to the catalytic converters and flooding.

Is that what you are referring to?

Let me know.

Joe