Shuts off while driving and idling?

140,000 MILES • 5.3L
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HOUSTON.HARPER1996
  • MEMBER
  • 1 POST
Replaced fuel pump and still doing it.
Apr 27, 2023 at 9:39 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,244 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
Apr 27, 2023 at 1:46 PM
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