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Engine cranks will not start?

Tiny
CADI420
  • MEMBER
  • 2007 CADILLAC CTS
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I was driving one day, and my car shut off. I thought I was out of gas, so I had someone bring me gas and it took a few times, but it started. I got it home and it hasn't started since. Apparently, I hit something, and it bent my fuel line, so I replaced that. Then I thought that it was the fuel pump, so I replaced that, and it still won't start, it cranks and it tries to start but it won't
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Friday, July 15th, 2022 AT 5:01 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
When you turn the key on without cranking the engine over can you hear the fuel pump run for 5 seconds in the tank? If not, when you replace the fuel pump did you use an AC Delco unit? I would check the fuel pump relay, here is a guide to help you test the relay. I have also included the relay location under the hood in the diagrams below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

This guide can help as well:

https://www.2carpros.com/articles/car-not-running-advanced

Check out the diagrams (below). Please let us know what happens.
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Friday, July 15th, 2022 AT 5:19 PM

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