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1998 Explorer Misfire

Jerry Spoon

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Joined
May 13, 2002
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City, State
Griffin, GA
Year, Model & Trim Level
1998 Explorer
My 1998 5.0 Ford Explorer Misfires occasionally. Seems to be most prevalent after warm up. 46000 miles
 




Alec

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City, State
Houston, Texas
Year, Model & Trim Level
2008 JK
Welcome!
A true misfire is usually due to a bad sparkplug. However, you can be getting misfire-like symptoms from a dirty Mass Air Flow Sensor (MAS/MAF) and other components. I'd check the plugs and clean your MAS and see what happens. 46k is a bit early for a plug change, but it might be time to change your plugs and wires.
 




Alec

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Moderator Emeritus
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City, State
Houston, Texas
Year, Model & Trim Level
2008 JK
For the benefit of other users and so that other can help, I'm gonna copy your email here:

Thank you for replying to my message. Perhaps I could have better identified the problem as an intermittent skip. The skip happens sometimes usually while going up a grade. The check engine light has not come on. The engine start fine and idles fine too.

Nothing jumps into mind as to what could be a definitive root of your problem. Hopefully someone else has an idea.
 




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