will not start

1999 FORD MUSTANG
1,850,000 MILES • 3.8L • V6 • 2WD • MANUAL
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PITBOSS21
  • MEMBER
  • 3 POSTS
I lost power in the engine. I replaced the Ignition Coil pack because I had 3 misfires. Now engine will crank over but will not start. Fuel pump comes on battery is good.
Sep 14, 2020 at 12:23 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

Chances are there is an issue with the crankshaft position sensor. Have you checked to see if there is spark to the plugs?

Here is a link that explains how to check. Do this and let me know what you find.


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

Take care,
Joe
Sep 14, 2020 at 10:27 AM
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PITBOSS21
  • MEMBER
  • 3 POSTS
Yes, i get spark and would there be dtc for the crank?
Sep 14, 2020 at 10:38 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
If you have both fuel and spark, it should run unless there is a timing issue or low compression.

Do me a favor. See if it starts for a couple seconds and then stalls if you use starting fluid. If it does, we need to check the fuel injectors for an injection pulse and confirm that fuel pressure is within the manufacturer's specs.

Let me know.
Joe
Sep 14, 2020 at 11:57 AM
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PITBOSS21
  • MEMBER
  • 3 POSTS
This is what it is doing.
Sep 14, 2020 at 11:05 PM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
I listened to it. Is the battery fully charged? If it is, it sounds like the timing is off. Note how it cranks and hesitates and then cranks again. Usually, that is caused by an ignition spark that is too early.

Are you certain that the spark plug wires were reinstalled to the correct cylinders? See pic 1. I have a feeling that is what is causing the problem.

Let me know.
Joe
Sep 15, 2020 at 11:57 AM
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