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New crank positioning sensor

Tiny
RUSTY61
  • MEMBER
  • 2001 CHEVROLET CAMARO
  • 80,000 MILES
What is the relearning process and how does it take?
Wednesday, May 25th, 2022 AT 8:27 PM

14 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
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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.
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Wednesday, May 25th, 2022 AT 9:39 PM
Tiny
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My car gets up to normal operating temperature and then shuts down. I just replaced the cam and crank position sensors. I really don't understand it. I would appreciate any ideas that you could give me about what the trouble is and how to fix it. Thank you.
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Thursday, May 26th, 2022 AT 10:34 PM
Tiny
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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.
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Friday, May 27th, 2022 AT 8:47 PM
Tiny
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No, it's not starting back up it turned over but won't start. It acts like it's out of gas and it's not. Why did they put so many sensors on these cars in the 60s and 70's? We didn't have these problems. I'll give it a try tomorrow. Thank you.
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Friday, May 27th, 2022 AT 11:10 PM
Tiny
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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
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Saturday, May 28th, 2022 AT 8:50 PM
Tiny
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I did, it's getting spark. It started I let run it got up to normal temperature and just shut down and wouldn't start back up. I didn't try it after that. I had other things to do fortunately I have a motorcycle to ride. I'm at a loss as to what the trouble could be. One guess I could make is too many sensors these cars nowadays I spent $60.00 in sensors and 3 days of work and got nothing but I started out with.
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Saturday, May 28th, 2022 AT 9:41 PM
Tiny
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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
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Saturday, May 28th, 2022 AT 10:11 PM
Tiny
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I didn't try it right away. I had a few things to take care of and the guy helping me had to go. I'll try it in the morning. What would make it stop pumping fuel after it gets to normal temperature? I replaced the cam and crank positioning sensors earlier this week. When I try to restart it acts like it's not getting gas. That's why thought the 2 sensors were bad. I had a check engine light on but after I replaced the sensors it went out. Oh well, nothing I can now might as get some sleep. Good night.
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Sunday, May 29th, 2022 AT 12:15 AM
Tiny
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It is getting spark when it shuts down. It will start up if I pump the gas but when stopped it shuts off. It starts easier when it shuts off than it used to. Could the sensor still be relearning?
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Sunday, May 29th, 2022 AT 4:51 PM
Tiny
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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
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Sunday, May 29th, 2022 AT 8:40 PM
Tiny
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I never noticed the smell of fuel. It's a holiday so let's take the day off, I could use a break from working on stuff. I'll try some stuff and let you know on Tuesday. Have a nice Memorial Day, talk to you later.
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Monday, May 30th, 2022 AT 2:11 AM
Tiny
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Sounds like a plan. Let me know what you find.

I hope you had a good Memorial Day as well.

Take care,

Joe
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Monday, May 30th, 2022 AT 6:35 PM
Tiny
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I still want to know what sensors would make my fuel pump shut down when they get warm.
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Friday, June 10th, 2022 AT 12:11 PM
Tiny
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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
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Friday, June 10th, 2022 AT 8:17 PM

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