Engine cranks but does not start

2008 FORD MUSTANG
12,000 MILES • 4.6L • V8 • 2WD • MANUAL
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DARCYJOHN323
  • MEMBER
  • 2 POSTS
Crank no start, no pulse and no communication data link.
Dec 13, 2020 at 3:18 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like you have a bad PCM or there is no power or ground to the PCM. Lets start by checking the fuses. here is a guide to help you and the fuse location in the diagrams below. Also lets check the PCM power relay.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

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

Here are the engine wiring diagrams as well so you can see how the system works. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Dec 14, 2020 at 6:55 PM
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DARCYJOHN323
  • MEMBER
  • 2 POSTS
Wow. You guys are the bomb.. I found broken wires on throttle sensor . Still working on it.
Dec 18, 2020 at 9:24 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Let us know what happens and please upload pictures or videos of the problem.
Dec 18, 2020 at 9:51 AM
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