Car Problem Reports

Mercury Grand Marquis EVP Sensor Failure May Cause Drivability/Fuel Economy Issues

Mercury Grand Marquis Problem
17 Reports
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Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000, 2001

Average Mileage: 110,571 mi (75,000 mi - 150,000 mi)


The EGR valve position (EVP) sensor can fail on this vehicle. The EVP sensor measures the EGR valve position and transmits the date to the engine control computer. If it fails, drivability and fuel economy can suffer, the Check Engine Light will commonly illuminate.

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