Engine shuts off when the weather is hot

2000 CHEVROLET BLAZER

1,002,345 MILES • 4.3L • V6 • 4WD • AUTOMATIC

ANTONIO_1706

MEMBER
1 POST

The engine will shut off out of nowhere when it's hot outside, but when I put it in neutral it will start again but once I put it in gear it will shut off again. It will start up right away but shuts off again. If I wait 15 to 20 minutes it will go.

Jul 2, 2022 at 9:19 AM

JACOBANDNICKOLAS

✓Experienced Mechanic
110,240 POSTS

Hi,

What you describe sounds like a faulty crankshaft position sensor. When they begin to fail, often they are adversely affected by heat. Do me a favor. Take a look through this link and let me know if you feel it mirrors what you experience:

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

If you do, here is a link that explains in general how one is replaced:

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

Also, I attached the directions specific to this vehicle below. Let me know your thoughts or if you have other questions.

Take care,

Joe

See pics below. Note: The last pic provides the relearn procedure.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Jul 2, 2022 at 4:50 PM