One problem related to speed control linkage has been reported for the 1999 Mercury Grand Marquis. The most recently reported issues are listed below.
Accelerator got stuck in open position, causing vehicle to continue accelrating after coming to a stop. Vehicle hit some thing before shutting off. Ford has been contacted.
| Vehicle Speed Control problems | |
| Speed Control Linkage problems | |
| Car Accelerates On Its Own problems | |
| Speed Control Cable problems | |
| Speed Sensor problems | |
| Cruise Control problems |