2002 Lincoln Continental poor mileage

2002 LINCOLN CONTINENTAL
86,000 MILES • V8 • FWD • AUTOMATIC
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BLUEACE
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  • 1 POST
mileage suddenly went from 22mpg to 15mpg. Spark plugs have 10,000 miles on change. Engine starts and runs good . No gasoline leaks observed. Air filter 1 year old and not clogged.
Jan 6, 2010 at 4:02 PM
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MERLIN2021
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An air filter might have something to do with it, 1 year old it should be changed ever 15,000. Aside from that MAF sensor could be dirty, they now make a spray cleaner for cleaning the platinium wire, spray it only, do not touch it with rags or anything else.
Check out this guide:
https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals
Another problem could be a bad 02 sensor, thes sensors, along with the MAF control injector pulse width, (how long) it stays open.
Jan 6, 2010 at 6:03 PM