Shuts off while driving and idling?

Tiny
HOUSTON.HARPER1996
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • 5.3L
  • 140,000 MILES
Replaced fuel pump and still doing it.
Thursday, April 27th, 2023 AT 4:39 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

The most common cause is a failing crankshaft position sensor. When it stalls, does it start right back up for you? If it doesn't, we need to check for spark at the plugs when it doesn't start.

Here is a link that shows how that is done:

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

Also, take a look through this link and let me know if anything mirrors what you experience:

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

Let me know.

Joe
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Thursday, April 27th, 2023 AT 8:46 PM

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