There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Yes
The engine in a 1993 grand marquis is a 4.6 litre/281 cubic inch.
how to changing engine coolant on a 1993 mercury grand marquis gs.
Bank 2 is the drivers side of the engine in a 2000 Mercury Grand Marquis
8 engine cylinders in a V8 engine
NO belt in the 302cid engine of a 1988 Mercury Grand Marquis. it is a chain with gears
The firewall on your 1999 Mercury Grand Marquis is the metal wall that divides the passenger compartment from the engine compartment
The thread on cap on the engine coolant reservoir is the " radiator cap " on a 1995 Mercury Grand Marquis
Yes , the 4.6 liter , SOHC , V8 engine in a 1992 Mercury Grand Marquis is fuel injected
A 1994 Mercury Grand Marquis has the 4.6 liter / 281 cubic inch Single Over Head Cam ( SOHC ) V8 engine from the factory
At the front of the engine , towards the drivers side of the engine ( power steering fluid reservoir on a 1998 Mercury Grand Marquis )
No.