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1998 Ford Expedition Question: Engine is missing or miss-fireing

 

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tom finnell, 5.4L V8, Mountain View, CA, May 20, 2014, 15:17
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I am having a problem with the engine missing. I replaced all the coil packs, intake gaskets, mass air flow sensor and spark plugs and its still having a problem. My next thing is the e.c.m wanted to know if that would be a good next step thank you for your time,
Tom Finnell

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  • Answer #1

    Hal... (see my shops), May 20, 2014, 15:25
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     Master

    Who's looked at the truck already? What codes is it setting? Stop throwing parts at it and get some diagnostic work done. You'll thank me later.

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