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Engine shut off while driving

Tiny
RUDEBOI556
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Okay, I have the vehicle listed above. I was riding down the highway and all of a sudden it shuts off the only thing out of place is a knock sensor by the distributor. Can that keep my car from cranking it will turn over?
Thursday, April 1st, 2021 AT 11:53 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

The knock sensor is used to fine-tune ignition timing. It shouldn't prevent it from starting.

I need you to do a couple of checks. Chances are you either lost fuel pressure or spark to the spark plugs. Here are two links that show how to test for both:

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

https://www.2carpros.com/articles/how-to-test-an-ignition-system

I need you to check for both of those. Also, here is a link you may find of interest. It discusses the most common causes of a crank no start condition:

https://www.2carpros.com/articles/car-cranks-but-wont-start

Let me know what you find or if you have other questions.

Take care,
Joe
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Thursday, April 1st, 2021 AT 8:10 PM

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