1986 Mercury Grand Marquis electrical system problems
11 owner complaints filed with NHTSA name the electrical system on the 1986 Mercury Grand Marquis — 52% of all complaints for this model year.
What owners report
“Vehicle vibrates on right front end when brakes are applied. When brakes are let go, feels like they are grabbing. Had stopped vehicle to check & noticed smoke from tires & then flames shot out. Had vehicle towed to mechanic & was informed that it was the electrical wiring harness. *ak”
filed Jun 8, 1999
“While parked, an electrical short in the ignition switch, caused the wiring in dash area to short out, resulting in a vehicle fire. *ak”
filed Mar 13, 1997
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 1986 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.