2001 expedition issues???
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
Was the coil or the boot bad?
The coils don't usually go bad unless there is a crack in the case or such.
The boots which contain the high voltage pulse to the plugs or the spring getting rusty are often the issue.
The coils don't usually go bad unless there is a crack in the case or such.
The boots which contain the high voltage pulse to the plugs or the spring getting rusty are often the issue.
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Tuned
Joined: Jun 2013
Posts: 390
Likes: 1
It was the coil. A few months ago I did find a bad boot on this same cylinder, replaced that and it didn't fix the problem. Now with a different coil it runs good.
The coil that went bad was a Car Quest aftermarket coil. A couple of years ago the same coil went bad so I replaced it with one from the local parts store. This time I replaced it with a Motorcraft coil.
The coil that went bad was a Car Quest aftermarket coil. A couple of years ago the same coil went bad so I replaced it with one from the local parts store. This time I replaced it with a Motorcraft coil.
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