Shuts off after reaching normal temperature?

Tiny
CMESIMPLE
  • MEMBER
  • 2006 MAZDA 6
  • 3.0L
  • V6
  • 2WD
  • MANUAL
  • 140,000 MILES
My car starts fine. Will drive normally for about 7 miles and I down shift going into town and it shuts off. Won't start again until it cools down to cold. Will run forever in neutral.
Tuesday, October 11th, 2022 AT 7:18 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,650 POSTS
Hi,

What you described sounds like a faulty crankshaft position sensor. When they begin to fail, heat adversely affects them causing the engine to lose ignition spark. Interestingly, this can fail without setting a code.

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 it does, then when the engine stalls and won't restart, check if there is spark to the plugs.

Here is a link that explains how to check:

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

Let me know what you find.

Joe
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Tuesday, October 11th, 2022 AT 8:46 PM

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