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Mercury Grand Marquis

Report: EVP Sensor Failure May Cause Drivability/Fuel Economy Issues

Mercury Grand Marquis Problem
9 Reports
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Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996

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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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