Re: check engine light
It can be done with a code reader, or you can just open the doors and disconnect the battery for about 15 minutes.
Once you do that, you want to re attach the battery, then start the car and turn most if not all electrical devices on so that the computer can start to relearn the sensor information for engine control.
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Crazy 'Bout A Mercury
1991 Topaz GS (2.3/auto) (gone with the ex Wife; I'll miss that car)
1999 Grand Marquis GS (4.6/auto)