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Cranks but will not start

Tiny
JENNIFER KEITH
  • MEMBER
  • 2007 FORD TAURUS
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
When I put the key in the ignition and try to start it everything work, it will try to start but not get any spark to it. We run the codes and it said the ignition coil. So we replaced that and still the same problem. What could it possibly be?
Sunday, March 31st, 2019 AT 8:17 AM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This could be a problem with your vehicle's Crankshaft Position Sensor (CKP). It is used by your vehicle's Power-train Control Module (PCM) to keep track of where the engine is in its four stroke cycle. If the PCM doesn't get a signal from the CKP then it will not fire the spark plugs or start.
I have included a diagram of where the CKP sensor is as well as a description of how your vehicle's ignition system works in the diagrams down below. I also have included a few links below for you to go to:

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros
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Sunday, March 31st, 2019 AT 9:05 AM

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