Mercury Mariner owners have reported 138 vehicle speed control related problems since 1996. Table 1 shows the 11 most common vehicle speed control problems. The number one most common problem is related to the vehicle's vehicle speed control (99 problems). The second most common problem is related to the vehicle's cruise control (10 problems). For details of each of the problem category, use the links in the table.
The pcm shorts out and fails when sparkplug and coil packs replaced this cause the steering system to fail speedometer to quit and no transmission connection Read details...
The throttle is held open when the cruise control is employed but remains open when the cruise control is turned off both by using the off button and brake application. This happens at 75-80 mph on interstate highways in az and ut. The power brake booster is ineffective with no intake vacuum. Read details...
The throttle/gas pedal in my 2008 Mercury Mariner kept sticking and eventually breaking. I had the car towed and taken to a repair shop where they inspected the cable unhooked from the pedal when the technician hooked the cable throttle to the pedal it would not move when pressing down on the Read details...
In cold weather my gas pedal sticks. Even after I have started my car and let run for 10-15 minutes. When I get in, reverse to forward position and try to accelerate- the gas pedal sticks. I have to slam on it for about 2 minutes before it actually works. Read details...
The contact owns a 2008 Mercury Mariner. While driving 40 mph, the vehicle hesitated and would not accelerate past 25 mph. In addition, the vehicle accelerated rapidly without warning. The contact stated that the vehicle shut off on numerous occasions and the check engine indicator illuminated Read details...