Question about Mercury Marquis

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I have a 2002 mercury marquis. the engine light stays on. i was told by a auto parts person that its either is a misfire of cylinder 4 or, the EGR valve. What should i do that will prove to be a course of wisdom. i am a retired senior on fixed income. thks benny

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Hi,

To start with, you could read an article :-

http://www.fixya.com/cars/r4008552-check_engine_light_being

Check engine light being ON does mean that there is something wrong with the car ( could be minor or major ), however going by the speculation never helps. You could take your car to nearest Autozone.They would scan your car for free. You could take a print out of the error codes. Those error codes would guide us what actually needs to be done rather than mere speculation and it could end up in waste of time and money.If you have scanned the car and have the codes, kindly let me know so that i could guide you what actually needs to be done.

Let me know,so that we could proceed.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Sep 29, 2010

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Posted on Jan 02, 2017

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