2000 Ford F-150 Multiple Coil Failures

1915 FORD F-150
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MARCELLASSMINIS
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  • 2 POSTS
We have a 2000 Ford f150 which has had 3 coils go bad in the last year. First, is this unusual, and 2nd, is this something a novice could replace himself? Require special tool?
May 26, 2006 at 10:27 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
It is easy to do with normal tools and not uncomon for more than one to fail. DON'T buy Zone or discount coils or you will continue to suffer the same problem.

Have someone check the voltage output of the alternator (across the battery). If it is over 14.7 volts it could cause coil failure.
May 26, 2006 at 10:55 AM
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Suggested Repair

Replace failed coils with quality parts, not discount coils, using normal hand tools. Have alternator output checked across the battery; voltage over 14.7 volts can cause repeated coil failure.

Conversation Summary

The owner of a 2000 Ford F-150 reports three ignition coils failed within a year and asks whether that is unusual and if a novice can replace them without special tools. The expert says multiple coil failures are not uncommon and replacement is easy with normal tools, but discount coils should be avoided. Alternator voltage should be checked across the battery, since output over 14.7 volts can cause coil failure.

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