Battery may have a dead cell and need replacing.
yes it will i have a optima battery in my 1995 marquis
Alternator is not putting out a charge.
Might be you alternator. Happened on my 1997 grand marq a couple of weeks ago
Either the battery is very weak or the alternator has bad diodes .
Two possible reasons. One, the Alternator is bad and two, the battery has a dead cell in it. Advance Auto Parts offers free testing on both.
It is located internally in the Alternator.
Check the fuel filter if the cars battery and alternator is good it might be the lack of fuel that is bogging the car down. My advice to you would be to check or replace the fuel filter.
A bad starter can cause a Mercury Grand Marquis to not start. A bad alternator or a problem with the security system can be the cause for the car not starting.
A lack of charge could be one of several things. A bad battery, bad alternator or bad regulator are the top three suspects.
Battery, fuel, spark.
My 2001 Dodge Grand Caravan began doing this and it is because the battery has a low charge, could be due to old battery, or even bad alternator. The quickest and easiest fix is to charge the battery and then wait and see if it happens again after. If it happens then you should have it looked at by a professional
The battery size for a 1987 Grand Marquis is a 4.6L. It is important to always check to make sure you have the correct size battery when you are replacing you battery..