One problem related to alternator/generator/regulator has been reported for the 1998 Mercury Grand Marquis. The most recently reported issues are listed below.
I have had all of my electrical components fixed, the alternator,the regulator,all the pig-tails,and a new battery. I am still having a problem with the battery light coming on. I have paid out alot of money to fix the problem. I am a tow truck driver and I tow alot of vehicles of this make and model for the same reason.
| Wiring problems | |
| Underhood Wiring problems | |
| Dash Wiring problems | |
| Battery problems | |
| Horn Assembly problems | |
| Alternator/generator/regulator problems | |
| Electrical System problems | |
| Ignition problems | |
| Instrument Panel Failure problems | |
| Starter problems |