On 99 expedition how can you prevent moisture from ignition coil and plugs?


Asked by Sep 10, 2016 at 05:19 PM about the 1999 Ford Expedition 4 Dr XLT 4WD SUV

Question type: Maintenance & Repair

Ignition coil failing causing rough running engine and misfiring. Appears to be
caused from moisture (water/ oil). How can I prevent this problem on 99
expedition? Are there gaskets one covers available?

2 Answers


If you can (not sure on that model coil pack but one f150) electric spray contact cleaner to dry it out and apply dielectric grease to keep it out, now if is or has access to your engine oil and needs a gasket which I do not know of then there must be another procedure to take.

1 out of 1 people think this is helpful.

Thanks, Mark this sounds like a plan. Certainly worth a shot.

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