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Ford Repair/99 Ford Expedition service engine light.

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Follow-Ups to Answer from Expert Erik H.

Mike wrote at 2007-04-23 13:18:32
You might try replacing the PCV valve *AND* the associated vacuum lines. Since I replaced mine, I have not seen the Check Engine light and my oil consumption has gone back to normal (very low).

dumpsterdiver wrote at 2008-08-13 11:56:18
Ignition coil, not just tuneup for spark plug misfire.  All if affordable;  specific cylinder coded if not.

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Erik H.

Expertise

I can answer all questions pertaining to the repair of most Ford products. Everything from the Aspire to the Econoline E-350. Sorry , I have no experience in the larger models.

Experience

I have worked on the Ford product for almost 20 years. I am an ASE Master certified technician and a L1 certified technician and also a Master Ford Service Specialist as well. In the state of Massachusetts, I am a State Inspector.

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