The battery light isn't an indicator that the battery is always bad. What the light should really be is a picture of an alternator, but most people wouldn't recognize that. Have the alternator checked off the vehicle to make sure it is good, then have it checked on the vehicle, (many places like Auto Zone do this for free). If it's not charging on the vehicle, you could have an alternator fuse bad or your car might even have an inline fuse between the alternator and battery. Many Ford products have a large fusible link between the alternator and battery, and if it's bad, there is no power going to the battery from the alternator. Good Luck!!!!
Why won't the keys in the ignition turn on a 1992 grand marquis?
yes it will i have a optima battery in my 1995 marquis
where is the ignition control module located on mercury marquis
It is located internally in the Alternator.
First off, does it turn over (crank) and not start? If it does and the motor sounds like it should start and it doesn't then check and see if your car is equipped with an ignition module, which I'm pretty sure it does. If it has an ignition module, replace that and it should solve your problem. Ignition modules are inexpensive and easy to install.
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.
The ignition timing is controled by the PCM (computer), which is located below the master cylender inside the dash panel. There is no separate ignition module.
how to change igntion lock
The ignition circuit does not have a fuse, typically. If it has a high-power fuse, it's in the fuse box under the hood.
Check the ignition coil on the Marquis. Check the crank sensor as well. One of these is probably bad.
Battery may have a dead cell and need replacing.
Passenger side rear