Question about 2000 Mercury Grand Marquis

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I own a 2000 mercury grand marquis. Check engine light on and it read codes p171

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You have an oxygen sensor that needs to be replaced.

Posted on Mar 20, 2011

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Engine misfiring, warning lights are coming in and out.digital dash trac control, overdrive off light,temp gauge shots up momentarily, and check engine light. car running rough. 2000 Grand Marquis 95k


Misfire condition on cylinder 5 (P0305) and cylinder 8 (P0308). There is a good explanation of it here :
http://troubleshootmyvehicle.com/ford/4.6L-5.4L/how-to-diagnose-misfire-codes-1

Mar 20, 2013 | 2000 Mercury Grand Marquis

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Misfire on mercury grand marquis p305


I answered this already

If a MIL Lamp is flashing please do not use the car

That on a ford that is called a Class A Cylinder misfire & will
destroy your exhaust converter, as well as possible other
engine damage,work on the misfire issues

Jan 24, 2013 | 2001 Mercury Grand Marquis

1 Answer

2000 mercury grand marquis sloppy shift


If your transmission is not shifting properly, then you probably also have an"OD OFF" light (if equipped) and/or a "CHECK ENGINE " light that is illuminated or blinking. If this is the case, then you need to scan your onboard computer network to retrieve fault codes that will lead you to the cause of the problem.

Jun 14, 2012 | 2000 Mercury Grand Marquis

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I have a 2000 Grand Marquis. The check engine light came on during a recent trip. It runs fine but I am concerned about it being on. I had filled up with gas and ran it for about 10 miles with the gas cap...


no,but to find the answer so we can figure it out,you need to have codes read by a shop or if you have a Autozone close by they check codes for free

Dec 29, 2009 | 2000 Mercury Grand Marquis

1 Answer

1994 Mercury Grand Marquis Check Engine Light Code 332


its the tube going from the egr valve to your exhaust it have carbon build up and you either have to replace it or get a metal coat hanger and clean it out.

Dec 03, 2008 | 1996 Mercury Grand Marquis

1 Answer

Check Engine Light Code 332


332 = EGR valve opening not detected.

You should be able to find a list of DTC's on the Internets somewhere.

Dec 03, 2008 | 1996 Mercury Grand Marquis

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