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2001 Mercury Grand Marquis GS 4.6L No reset monitors
Posted to Ford Driveability on 8/9/2019 17 Replies

I have tried everything I can think of on this. Here in NM the car will not pass emission because it will not reset the monitors. The speedometer works buts does not read at PCM. I tested the wiring all the way to the PCM. Has good signal completely to it....

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car Vehicle Data

2001 Mercury Grand Marquis GS

VIN 2MEFM74W81
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / Speedometer sesor.
EmissionsOBD-II Compliant
SymptomsNo Reset Monitors
OccursAlways
Message Closed

car Vehicle Data

2001 Mercury Grand Marquis GS

VIN 2MEFM74W81
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / Speedometer sesor.
EmissionsOBD-II Compliant
SymptomsNo Reset Monitors
OccursAlways