Will not start

Tiny
JHACKENBERG
  • MEMBER
  • 2003 CADILLAC CTS
  • 6 CYL
  • AUTOMATIC
  • 180,000 MILES
I turn the key into to start and it continually keeps trying to start after letting key go but doesn't start.
Thursday, May 16th, 2019 AT 8:53 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This could be a problem with your vehicle's Crankshaft Position Sensor (CKP). Your vehicle's Power-train Control Module (PCM) uses this signal to figure out where the engine is in it's four stroke cycle so it can time ignition and fuel injector timing. If your vehicle's PCM does not get a signal from the CKP, the engine will not start or run. I have included a few links for you below:

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

I have also included information on your vehicle's CKP in the diagrams down below. Please go through these guides and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Friday, May 17th, 2019 AT 4:54 AM

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