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Q: Why is the check engine light on 2003 mercury marquis?
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How do you turn off check engine light on a 1992 mercury grand marquis?

Have vehicle scanned to determine the problem


WHy is the check engine light on in a Mercury Grand Marquis?

The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected


What to check when check engine light in a 1992 mercury grand marquis?

The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected


Why does 99 mercury grand marquis run rough check engine light on?

The check engine light indicates that the computer has detected a "fault". Use a code scanner to find out what the computer has detected, that is PROBABLY the reason the engine is running poorly.


2002 Mercury Grand Marquis engine light stays on?

Have the codes read.


Could a 1998 mercury grand marquis be driven without a catalytic converter?

You can but the check engine light will remain on and it won't pass an emissions test.


Mercury Grand Marquis check air suspension light is on?

I have a 1998 ford grand Marquis- and the problem is the air suspension light stays on- how to fix this problem


Where check engine light is located on 1997 Mercury Mountaineer?

On a 1997 Mercury Mountaineer : The " CHECK ENGINE " warning light is just to the left of the battery voltage gauge


How do you replace the parking light bulb in a 2002 Mercury Grand Marquis?

check the bottom of the steering column


Check engine light started blinking in 02 mercury marquis?

If your check engine light is blinking that means a cylinder misfire has been detected Drive in a moderate fashion ( no fast acceleration / decelleration ) and have the vehicle scanned for any trouble code(s) to diagnose and repair the problem


How do you turn off the check engine light in a 1999 mercury cougar?

Check and fix the engine.


Why does my check engine light flash on a 1999 mercury mystique?

If your check engine light is flashing , an engine cylinder misfire has been detected