Just assuming it has between 50,000 and 80,000 miles it is almost certainly the O2 sensor. Very popular after 50,000 miles and hardly ever causes any noticeable problems except maybe a slight drop in fuel economy because it will be running a little rich.
I have a 1998 Mercury that this happens to when the gas level gets below 1/4 of a tank. My brother is a mechanic and said that it's just the O2 level and it doesn't cause any harm. To reset it, just unplug the battery for about 2 minutes, then plug it back in.
I purchases a used 2000 Grand Marquis in January and my check light came on without apparent cause. I had it checked and it was a intake manifold leak. Ford has a recall on these manifolds that ends some time this month and will replace the bad manifold for free. You need to have it placed on a computer at a dealership. Ford lost a law suit about the bad intake manifold recently. .
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.
NO belt in the 302cid engine of a 1988 Mercury Grand Marquis. it is a chain with gears
At the front of the engine , towards the drivers side of the engine ( power steering fluid reservoir on a 1998 Mercury Grand Marquis )
Mercury Grand Marquis was created in 1983.
According to the 1996 Mercury Grand Marquis Owner Guide ( 5W-30 is the PREFERRED engine oil )
Bank 2 is the drivers side of the engine in a 2000 Mercury Grand Marquis
what is the part called where the water pump is connected to on a 1996 mercury grand marquis -------------------------- That would be the engine
Why cant you put any 5.0 engine in your 1991 mercury grand marquis
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
On a 1999 Mercury Grand Marquis , 4.6 liter V8 engine : The Original Equipment engine cooling thermostat would be : ( around 192 * Fahrenheit )
Have the codes read.
( 6 quarts with engine oil filter change ) according to the 2003 Mercury Grand Marquis Owner Guide
On a 1997 Mercury Grand Marquis : The thread on cap on the engine coolant reservoir is the 16 PSI pressure cap / radiator cap
For a 1999 Mercury Grand Marquis : ( the engine air filter is Motorcraft FA-1668 )
Yes , the 4.6 liter , SOHC , V8 engine in a 1992 Mercury Grand Marquis is fuel injected
According to the 2006 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts / 5.7 litres of 5W-20 engine oil )
how to replace starter on 2000 mercury grand marquis
what is a fire order for 1998 mercury grand marquis
.054 is the gap for the Mercury Grand Marquis.
According to the 2002 Mercury Grand Marquis Owner Guide : With engine oil filter change : The 4.6 liter V8 engine takes ( 5.0 U.S. quarts of 5W-20 )
Rear of engine near firewall.
Anything's possible (...but why?)