Ignition coil Miss, loss of power?

1999 FORD RANGER
200,000 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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JGA
  • MEMBER
  • 1 POST
Miss, loss of power. Is it possible for one side of a six pack coil to fail?
Mar 23, 2023 at 9:08 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,256 POSTS
Yes, it is because they can short out internally which can affect all coils. I would replace the coils; spark plugs and plug wires to start as a regular tune up. Here is how to replace the coil and a guide to help you step by step for the tune up:

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

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Mar 24, 2023 at 11:22 AM
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