Question about 2001 Ford Expedition

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My 01 ford expedition misses while going down the road

A unreliabe mechanic told me it was either the plugs or the coils that go on top of them

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This usually where everyone goes first. I would go head and put a set of plugs in as this is an inexpensive fix and can't hurt. Just be sure the are properly gaped. It could be a number of things. Look at, coils for spark jump. Go out one night, open the hood, start engine. Make sure it's dark, no outside lights. Now, look for any indication of a spark jumping from any of the electrical ignition system. You can also take a spray bottle of water and spray a very fine mist around those same items. If the integrity is poor, it will jump spark. Don't overlook clogged injectors.
You got alot of investigating to do. Good luck.

Posted on Feb 27, 2009

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