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1997 Mercury Mountaineer acceleration problems

59 complaints (18% of all complaints for this car). Typical mileage when it fails: 110,000. 18 crashes reported.

owner complaints
59
of this car's complaints
18%
typical mileage
110,000
crashes
18
recalls
3

Which part fails

  • Accelerator pedal
    15
  • Linkages
    3
  • Cruise control
    3
  • Cables
    2

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Mercury Mountaineer acceleration problems in other years

1996200020052010

Specific symptoms reported on the 1997 Mercury Mountaineer acceleration

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Sudden acceleration 10

Related recalls

Vehicle speed controlReported October 13, 2009 · 4,500,000 vehicles affected
What is wrong
Ford is recalling model years 1995-2003 windstar, 2000-2003 excursion diesel, 1993-1997 and 1999-2003 f-250 sd through f-550 sd diesel, 1992-2003 e-150 through e-550, 1995-2002 explorer, 1997 and 2002 mercury mountaineer, 1995-1997 and 2001-2003 ranger, and 1994 f53 vehicles equipped with the texas instruments speed control deactivation switch (scds). The scds may leak internally and then overheat, smoke, or burn.
Risk
A vehicle fire could occur with or without the engine running.
Remedy
Ford will notify owners that dealers will install a fused wiring harness in line with the scds. On 1999-2003 windstar vehicles with a leaking scds, dealers will also inspect the ABS control module connector and repair as necessary. Repairs will be completed free of charge. The safety recall began on october 27, 2009. Owners may contact ford at 1‑888‑222‑2751.

Recall number 09V399000 · Recall details

Vehicle speed controlReported December 27, 2000 · 220,000 vehicles affected
What is wrong
Vehicle description: sport utility vehicles equipped with 4.0l sohc engines and still retain the original throttle body (part numbers 97jf-9e926ab or 97jf-9e926-AC). Some of the original throttle bodies installed allowed a gap between the plate and bore to be built too narrow. This reduced clearance allowed the engine deposits normally present in the throttle body to contact or bridge the gap. If the engine deposits bridged the gap between the throttle plate and bore and then hardened, on the initial application of the accelerator pedal after the engine has cooled, the operator would need to apply additional force to the accelerator pedal to break the bridge.
Risk
This could result in engine surge when the accelerator pedal breaks free.
Remedy
Dealers will replace the original throttle bodies.

Recall number 00V422000 · Recall details

Vehicle speed controlReported April 30, 1997 · 23,000 vehicles affected
What is wrong
Vehicle description: multi-purpose passenger vehicles equipped with 5.0l engines originally sold or currently registered in the states of alaska, idaho, iowa, maine, michigan (upper peninsula only), minnesota, montana, nebraska, new hampshire, new york, north dakota, south dakota, vermont, wisconsin, and wyoming. These vehicles, when operated for extended periods of time at highway speeds and temperatures below -20 degrees farenheit, do not return to idle due to ice in the throttle body.
Risk
Although the vehicle can be controlled by either applying the service brakes or shifting the transmission to neutral, increased brake pedal efforts or some increase in stopping distance can result.
Remedy
Dealers will install a revised pcv system with water heated vacuum source.

Recall number 97V074000 · Recall details

What 1997 Mercury Mountaineer owners say

Most recent owner complaints, unedited.

Filed Dec 4, 2019 · Acceleration · 110,000 miles · GA · crash

Tl* the contact's husband owns a 1997 mercury mountaineer. The contact stated that when the brake pedal was released, the vehicle unintentionally accelerated. As a result, the contact's husband rear ended another vehicle. The air bags did not deploy. A police report was filed and there were no injuries. The vehicle was not taken to a dealer or independent mechanic for diagnostic testing or repairs. The manufacturer was made aware of the failure. The failure mileage was approximately 110,000.

Filed Sep 8, 2016 · Acceleration, Electrical · GA

When I use the cruise control and then turn it off I can't seem to push my gas pedal when you are driving the vehicle. I have to keep putting extreme pressure on the accelerator pedal until something breaks or pops and then it allows me to push the pedal. I keep having problems with smoke coming from on top of the steering column like something is burning when you are driving, now I have electrical problems to where my horn will not work anymore. I keep having problems with the front frame of the SUV. The frame sounds and feels like it is going to fall apart and it doesn't matter if you are driving or stationary. The mechanic says it is the sway bar that is causing that problem. I have been calling ford about it and they keep saying there is no recall on my vehicle.

Filed Jun 3, 2013 · Acceleration · 160,000 miles · WI

Tl* the contact owns a 1997 mercury mountaineer. The contact stated that he shifted into drive and the vehicle suddenly accelerated. The contact mentioned that he had to shift to neutral in order to stop the vehicle and stated that the failure occurred several times. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 160,000 and the current mileage was 170,000.

Filed Mar 3, 2011 · Acceleration · TX · crash · 2 injuries

Tl* the contact owns a 1997 mercury mountaineer. The contact was driving approximately 45 MPH when the vehicle abnormally accelerated. The contact applied the brakes but the vehicle would not stop. The contact was unable to maintain control of the vehicle as it accelerated. The left side of the vehicle began to skid abnormally and the contact crashed into a wire fence. The vehicle then rolled over and crashed into several trees before coming to a stop. The passenger sustained major injuries to the head and bodily trauma. The contact sustained injuries to the head. The contact and passenger were transported to the hospital via ambulance. A police report was filed. The vehicle was destroyed. The failure mileage was unknown.

Filed Jun 2, 2010 · Acceleration · 149,000 miles · AL

My 1997 mercury mountaineer (that I purchased feb 2010) is experiencing the same acceleration problems as described in the 4.0 sohc campaign # 00v422000 and action # ea99001. I have to apply extra acceleration to make the car drive when engine is "cold". After it warms up, or if I start the engine and allow it to warm up before driving, I do not have that problem. Has there been any other v8 complaints?

Filed Dec 11, 2009 · Acceleration, Body · 156,000 miles · NJ

Tl* the contact owns a 1997 mercury mountaineer. He experienced difficult steering, because the front sway bar linkage had fractured. Secondly he would intermittently smell an odor of gasoline inside of the vehicle. Thirdly during brake application the accelerator pedal would also stick. This condition would cause the vehicle to lurch forward. Lastly the main bar that held the two bumpers together had corroded. The failures were described in recalls (98v060000, 00v422000, 00v402000). However he was advised by representatives from the dealer and the manufacturer that the previous owner had the vehicle repaired according the recalls. The current mileage was approximately 157,000. The failure mileage was approximately 156,000.

Filed Oct 13, 2009 · Acceleration · 109,000 miles · TX

Cruise control works at times and sometime does not work.

Filed Aug 26, 2005 · Acceleration · 94,343 miles · MD

Dt: 1997 mercury mountaineer. I the consumer bought the car used, and when using the cruise control for the first time it would not disengage. It was at 70 MPH and it accelerated to 85 MPH. To stop vehicle had to put it into neutral and turn the key off. Then vehicle coasted until it would stop. Also had to pump the brakes many times to stop. There was no crash. Had the car looked at by a mechanic.

Filed Feb 18, 2005 · Acceleration · 101,000 miles · CA

While driving 50 MPH the consumer felt something under h is foot snap. The consumer lost speed, pulled over to the side of the road, to discover the bolt holding the accelerator pedal had fallen off. The consumer was able to drive the vehicle in order to have the repair done. *nm

Filed Feb 4, 2004 · Acceleration · 46,289 miles · FL · crash

While completely stopped, the engine roared and the vehicle lunged into oncoming traffic hitting another vehicle. The dealer repaired the damages to the vehicle but was not able to determine the cause of the problem. Please provide any additional information.

Questions about the 1997 Mercury Mountaineer acceleration

Does the 1997 Mercury Mountaineer have acceleration problems?

Owners have filed 59 complaints about the acceleration of the 1997 Mercury Mountaineer, 18% of all its complaints.

At what mileage do 1997 Mercury Mountaineer acceleration problems start?

The typical (median) mileage in owner complaints is 110,000 miles.

Was there a recall on the 1997 Mercury Mountaineer acceleration?

Yes, 3 recalls: 09V399000, 00V422000, 97V074000. Check your VIN to see if your car still needs the free repair.

What year does the Mercury Mountaineer have the most acceleration problems?

The Mercury Mountaineer model years with the most acceleration complaints are 1997 (59 complaints), 1998 (36 complaints) and 2000 (28 complaints).

Other 1997 Mercury Mountaineer problems

Tires 138Brakes 40Electrical 15Suspension 15Engine 14Seat belts 12Visibility 11Body 9Transmission 8Airbags 7Fuel system 6Locks 5Steering 5Seats 4Lights 3Wheels 2

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