2008 Mercury Mariner acceleration problems

Filed Feb 6, 2021 · Acceleration, Transmission · MA

2008 mercury mariner throttle control powertrain light comes on, transmission cannot go into gear properly, it stops at 4000 RPM, and it struggles to go at higher speeds,

Filed Jan 11, 2021 · Acceleration · 198,000 miles · IL

I realized sometime last year that my throttle was sticking when I would start the car and begin to take off. It was here and there and then I must have gotten use to it but now it does it even when I'm driving, it sticks all the time. Now it doesn't want to shift at the right times and it acts weird a lot, going up hills, when shifting from gears and so on.

Filed May 24, 2019 · Acceleration, Transmission · 165,000 miles · MI

Takata recall well driving my vehicle lost acceleration.when I step on the gas the vehicle didn't accelerate as the RPM went up.I was coming to a stop light on city street.as I made the stop at stop-light as the light turn green I stepped on the has and the rpms went up but vehicle barely moved.

Filed Jun 15, 2017 · Acceleration, Engine · 101,851 miles · AZ

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. This is very dangerous.

Filed May 5, 2017 · Acceleration, Engine · 44,000 miles · LA

Tl* 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 briefly without warning. The vehicle was not repaired the manufacturer was made aware of the failures. The failure mileage was 44,000. Updated 08/04/17*lj

Filed Apr 21, 2017 · Acceleration, Steering · 135,000 miles · TN

Tl* the contact owns a 2008 mercury mariner. The contact stated that while driving at various speeds, the cruise control malfunctioned as well as the rpms. The contact stated that the rpms were inconsistent with the actual speed of the vehicle and went up to 4000 rpms at various speeds. In addition, there was a loud clunking noise in the steering wheel and the contact stated that the vehicle downshifted on numerous occasions. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 135,000.

Filed Jan 1, 2017 · Acceleration, Fuel system · 72,300 miles · ND

My wife and I were driving home on the interstate. We had just merged to the passing lane to allow traffic merging from an on ramp to enter the interstate a vehicle next to us was doing the exact speed as we were which was 72 MPH set cruise control. I had vehicles approaching from the rear and since I was in the passing lane decided to speed up and get in front of the car beside us I pushed the accelerator on our 08 mercury mariner with a 3.0l engine to the floor and the car accelerated in front of the other car, when I lifted my foot off the accelerator the car continued to accelerate. I pushed on the brake once with nothing changing the car continued to accelerate. I proceeded to pump the brake three additional times in about 1 second intervals. Finally the accelerator pedal release and the car slowed down. We preceded home without further incident. This is a very dangerous condition and has resulted in serious injuries and deaths in earlier model years of ford escape, mercury mariner and mazda tribute vehicles. I have had ford vehicles my whole life and have been working on vehicles for more than thirty five years. This is not normal and is not the only time or vehicle this has happened to in this year there are many other similar people that have similar complaints on these ford and mercury SUV's on the internet ex: carcomplaints.com to name just one. The internet is filled with these dangerous complaints. When are you going to live up to your name and put the safety aspect first,when dealing with these to rich to be bothered by recalls auto manufacturers?

Filed Jun 22, 2016 · Acceleration · 80,000 miles · KY

Tl* the contact owns a 2008 mercury mariner. While driving approximately 30 MPH, the accelerator pedal assembly fractured without warning. The contact reconnected the arm; however, the failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 80,000.

Filed Apr 1, 2016 · Acceleration, Transmission · 77,000 miles · NJ

Speed shift forced on 2nd and 4th, the vehicle has only 77000 miles and transmission is bad, contacted the dealer about the problem and no action taken, they said the vehicle is not on a recall campaign and owner needed to do repair and if the campaign started on this problem in the future they will reimburse the repair amount, I need the vehicle on a daily basis and now I'm stock with the repairs cost of 1500 plus labor. I need to add this vehicle to the recall as shown here: report receipt date: sep 29, 2015 the federal safety agency campaign number: 15v606000 component(s): power train the vehicle was in motion when it happened , speed was reduced and wrench light came on the dashboard

Filed Mar 17, 2016 · Acceleration · 96,000 miles · PA

Tl* the contact owns a 2008 mercury mariner. The contact stated that while driving and depressing the accelerator pedal, the vehicle would hesitate to accelerate over 15 MPH and the service warning light illuminated. The vehicle was taken to a dealer where it was diagnosed twice that the throttle control module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 96,000.