The 2003 Mercury Grand Marquis came equipped with the 4. 6L V8. Oxygen (O2) sensor locations are upstream and downstream (before and after the catalytic converters).
Under the car connected to the exhaust pipe. Look under there and you will see the converters.
there are 4 catalic converters on a 1992 grand marquis
no, the 88 has 2 sound resonators and 2 converters.
Depends on why it is noisy.
4 though only the front ones are monitored for efficiency
Mercury Grand Marquis was created in 1983.
On a 1998 Mercury Grand Marquis : Bank 1 is the passenger side of the engine Sensor 2 is AFTER the exhaust has passed through the catalytic converter
On a 1996 Mercury Grand Marquis , 4.6 liter V8 engine : Bank 1 is the passenger side of the engine Sensor 2 would be AFTER the exhaust has passed through the catalytic converter
.054 is the gap for the Mercury Grand Marquis.
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