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I have a 3.5 that idles around 1100 RPM. When warmed up, the engine will start to miss intermittently. You can see it on the tach in this video at .08,.12, .19 and on. It doesn't seem to happen any other time (or at least I don't notice it).

Am I dealing with a bad coil pack or something else?

EDIT: Engine was rebuilt 10,000 miles ago. Has ran fine since except for this. New spark plugs also were put in when rebuilt.

  • Maybe it needs new spark plugs? Without a maintenance history is is pure guesswork on our part. – Moab Nov 6 '19 at 17:11

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