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Old 01-07-2005, 04:30 PM   #8
chucklong
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Join Date: Aug 2004
Location: Monticello, Maine
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Re: Re: 1992 Grand Marquis - Check Engine Light

Quote:
Originally Posted by Pigrider
My 94 has had the same problem for 3 years now. I had a crate motor put in so I know the engine is fine. It's just one of the "smog" sensors malfunctioning. Was told not to worry about it. The Merc dealer wanted $500 to change the thing and wouldn't guarantee that it would fix the lite problem

Finally figured it out......FYI

The EGR ports were clogged up. Cleaned them up of carbon and she's good as new! Light hasn't come on again for a month now.

Thanks for all the help,

Chuck
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