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January 1, 2000 Service bulletin

The vehicle may exhibit detonation/spark knock.

Mercury technical service bulletin 7874 for 1998-1999 Mercury Grand Marquis and 1999 Ford Crown Victoria.

Bulletin number
7874
Component
Electrical system: alternator/generator/regulator
Summary
The vehicle may exhibit detonation/spark knock.

Owners of these vehicles have filed 40 complaints in the electrical category.

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