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Engine cranks but does not start?

Tiny
JONESJ192
  • MEMBER
  • 2009 CHRYSLER 300
  • 2.7L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 121,000 MILES
My vehicle cranks over normally but will not start. I was told by a neighbor to check to see if fuel pump comes on when I cycle the ignition on which it does. We then checked to see if we were getting a spark at the plugs which we weren’t.
Thursday, September 1st, 2022 AT 1:06 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,391 POSTS
The most common cause of spark loss is a faulty crankshaft position sensor. Take a look through this link and let me know if any of the symptoms were experienced prior to failure:

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

Also, if you have a live data scan tool, check for an RPM signal when cranking the engine. If there isn't one, the sensor is my first suspect.

Let me know.

Joe

See pic below for sensor location.
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Thursday, September 1st, 2022 AT 8:23 PM

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