It will not start but will turn over but not fire

Tiny
GRAYEZGO
  • MEMBER
  • 2000 PONTIAC GRAND AM
While driving the other day the car just quit and then started right back up then a few days later it did the same thing but this morning it will not start but will turn over but not fire.
Wednesday, December 5th, 2007 AT 12:07 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

It sounds like you might have a faulty crank sensor.
Usually when a crank sensor goes bad, the engine will stall and sometimes you can start it back up, other times it will not start up.
The crank position sensor is located on the lower front part of the engine, right next to the engine oil filter.

Overtime all the heat and vibration can fault out a crank sensor.
When a crank sensor goes bad it may or may not trigger the check engine light.
Is your check engine light illuminated?

https://youtu.be/vMwTzURWXmk

https://www.2carpros.com/articles/car-cranks-but-wont-start
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Check to see if you are getting spark to the plugs. You can also check to see if the coils getting power to them.

You might find this article helpful:

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

I have attached the crank sensor diagrams for your reference.

Please let me know of any questions.

Thank you.
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Sunday, August 8th, 2021 AT 9:41 AM

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