No spark to the coils and no start?

Tiny
PILAS1982
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 200,000 MILES
I was fixing my truck with a new A/C compressor and the truck started just fine before I changed it and now that I put the new A/C compressor on the truck doesn't even have a spark on the coils and it will not turn on at all. I'm trying to figure out what could be the problem.
Sunday, June 4th, 2023 AT 8:21 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
I would start at the crankshaft angle sensor, which is near the starter, they go out and cause this kind of issue. here is a video to show you how to change the sensor out or check the electrical connection:

https://youtu.be/-Ib3Lkde3Wo

This guide may help as well:

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

Please go over these guides and get back to us.
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Monday, June 5th, 2023 AT 10:40 AM

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