1989 Mercury Grand Marquis electrical system problems
16 owner complaints filed with NHTSA name the electrical system on the 1989 Mercury Grand Marquis — 28% of all complaints for this model year.
What owners report
“When attempting to install a brand new craft silver 651 battery it started sparking. The retail store was contacted, and they indicated that the battery will stop sparking once installed. Consumer installed the battery and it blew up the alternator. Retail store district manager was contacted. He…”
filed Sep 28, 2004
“While driving at night with the headlights on high-beam the lights start to go on and off repeatedly. I have to put the head-lights on low-beam and then they stay on. If I put them back on high-beam they start to go on and off again. It seems as if there is a short in the electrical system.”
filed Feb 16, 2000
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Subject on a wire harness terminal repair kit available for repairing electrical wiring harnesses. *tt
99222 · Service Bulletin/Repair Instructions · issued Oct 18, 1999Ford motor company has released a new electrical grease ( f8az - 19g208-aa ) to reduce the possibility of moisture corrosion at the terminals. *yc
98246 · Service Bulletin/Repair Instructions · issued Dec 7, 1998
Electrical System problems in other Grand Marquis years
| Year | Reports | Share |
|---|---|---|
| 2010 Grand Marquis | 3 | 13% |
| 2009 Grand Marquis | 4 | 15% |
| 2008 Grand Marquis | 9 | 12% |
| 2007 Grand Marquis | 1 | 1% |
| 2006 Grand Marquis | 8 | 6% |
| 2005 Grand Marquis | 75 | 15% |
| 2004 Grand Marquis | 40 | 12% |
| 2003 Grand Marquis | 51 | 14% |
| 2002 Grand Marquis | 10 | 13% |
| 2001 Grand Marquis | 13 | 8% |
| 2000 Grand Marquis | 17 | 10% |
| 1999 Grand Marquis | 15 | 9% |
Other reported problem areas on the 1989 Mercury Grand Marquis
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.