Found the problem....I changed the Idle Air Control Valve. Thnaks to all that answered my question.
Two things I can think of:
Carbon build-up on the injectors; solution: speed on the highway (65+ MPH).
Idle is set too low; solution: find the idling screw and turn it up.
You probably have a 4.6 motor? If so you may have egr passageways plugging up. Although they usually are a problem whem warm if this is true. Next guess is a sensor such as a coolant temp sensor. It monitors the coolant temperature and tells the computer to adjust the fuel/air ratio. It feeds it more fuel when cold to warm it quicker. If the sensor is telling the computer bad info it may be starving or dumping too much fuel in. The computer controls the idle (no adjustment).
I had similar problem on a 96. I changed the air mass flow sensor and it ran like a champ. Took about 15 minutes. Very simple. Part costs about $85 remanufactured. Dealer tried to charge me about $300 to replace!!!
how to changing engine coolant on a 1993 mercury grand marquis gs.
what is the part called where the water pump is connected to on a 1996 mercury grand marquis -------------------------- That would be the engine
Might be you alternator. Happened on my 1997 grand marq a couple of weeks ago
I was looking at a ( 1998 ) Mercury Grand Marquis Owner Guide and it shows the body as being ( 78.2 inches wide ) I'm not sure how much the outside mirrors would add to that
On a 1999 Mercury Grand Marquis : The Original Equipment engine cooling thermostat would have been ( around 192 * Fahrenheit )
Physically, yes. It would be best to consult an interchange reference to know if the wiring and programming are compatible.
I would say ( No ) I was looking at the 2002 Mercury Grand Marquis Owner Guide and it doesn't show any reference to a cabin air filter
On a 1999 Mercury Grand Marquis , 4.6 liter V8 engine : The Original Equipment engine cooling thermostat would be : ( around 192 * Fahrenheit )
The shocks are there for a reason. Removing them would cause damage.
Heater core leaking.
The Grand Marquis is body-on-frame (same platform as the Lincoln Town Car, the classic American limo) and the 300 is unibody. Why would the 300 be sought after and not the Grand Marquis? They compete in the same price range.
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