Engine misfires at 3,000 RPMs?

2001 FORD RANGER
116,000 MILES • 4.0L • V6 • 2WD • AUTOMATIC
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JIM DONOVAN
  • MEMBER
  • 5 POSTS
When in Park my engine is fine until I reach 3000 RMP and then it starts to stumble like it is misfiring. What could it be?
May 23, 2023 at 12:39 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,456 POSTS
This can be many things such as a broken valve spring bad spark plugs/wire/coil fuel injector, flat camshaft, can you scan the PCM for codes and let me know?

Here are two guides to help us get started:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

and

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing


Please go over these guides and get back to us.


May 23, 2023 at 6:43 AM
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JIM DONOVAN
  • MEMBER
  • 5 POSTS
Hello Ken, I ran a diagnostics check and got no codes. It will be a few days before I can do anything else because I have to go into the hospital for some tests. I will get back to you as soon as I can. Thanks, Jim.
May 23, 2023 at 7:08 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,456 POSTS
Okay, let me know hope things go well for you.
May 25, 2023 at 9:30 AM
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