1999 Audi A6 acceleration problems

Filed Jan 28, 2015 · Acceleration, Brakes · 167,770 miles · WA

While driving 60 MPH on the freeway, the car accelerated on its own to 72 MPH as if going into cruise control. Confirmed the cruise control switch was turned off. Applied the brakes seven times. Car did not respond to braking. Engine seemed to race against the brakes. I put the car in neutral, moved to side of the road. Applied the hand brake. Turned key off. Car slowed then stopped. Since this incident the car was test driven twice by mechanics, during which it seemed to operate normally. On january 27, 2015 the car was taken to the local dealer, bellevue audi, for diagnosis. Awaiting results.

Filed Apr 23, 2011 · Acceleration · 184,700 miles · ID

1999 audi a6 quattro suddenly accelerated. I was pulling into a parking slot at maybe 5 MPH, my foot was lightly pressing on the brake pedal, as I was nearly in the parking stall. The engine was at idle speed. As I coasted into the parking stall with my foot on the brake pedal the engine suddenly and without any prior warning revved up to above 3000 RPM. The car lurched forward hitting the parking curb directly in front of me. I immediately applied more pressure to the brake pedal to keep the car from jumping over the curb, and shifted the gear selector into n. The engine then revved even higher, at which point I turned off the key. With the key off, I moved the gear selector to p, and restarted the engine. The vehicle then ran idled at normal speed, and drove normally to my home about 1/4 mile away. I'm afraid to drive the vehicle. This is the second time this has happened; the first time it happened was as I was coasting to a stop at a red traffic light. Again my foot was on the brake and the engine was returning to idle speed. As I approached the intersection the engine revved causing me to coast through the intersection before being able to bring the vehicle to a full stop, again by applying strong breaking force. I then put the transmission in n and the engine revved higher, so I switched off the key. Thankfully the other vehicles had already cleared the intersection and there was no collision. When I restarted the vehicle, it idled and drove as normal again. The outside temperature was above 45 degrees fahrenheit and the pavement was dry in both cases.

Filed Feb 9, 2011 · Acceleration, Brakes · 140,000 miles · MN

Driving home tonight my car all of a sudden started accelerating (I drive an audi a6 1999). Using the brakes I was able to slow it down enough to get off the freeway though my brakes seemed to be fighting against the car. I rolled through two stop signs as my car would not stop and luckily avoiding the other cars waiting there I was able to put my car in park and turn off the engine. I waited ten minutes or so and tried starting my car. The engine revved to 4 to 5000 rpms so, I quickly shut it off again. I waited again, tried it once more and the car started fine. I drove home, called the dealership and was told I could be seen on 02/14/11. Four days from now. This is the second time this has happened.

Filed Dec 28, 2010 · Acceleration · 110,000 miles · OH · crash

On the morning of november 20, 2010, I was pulling in to a parking space at the local library, approximately 10 minutes from my home. As I was making the turn to pull into the parking space, I heard the engine rev, and the car accelerated as though the cruise control had "kicked in" and my brake would not stop the car. Rather than hit a car that was parked in front of my parking space, I turned the vehicle to go up a curb and hit a tree. Once the tree stopped the car, I was able to put the car in reverse, back down off the curb, put the car in park, and pull out the key. Oil was pouring out of the vehicle and it had to be towed to my home, was examined by my insurance company, and was written off as a total loss.

Filed Sep 1, 2009 · Acceleration · 72,000 miles · NJ

Car: 1999 audi avant wagon 1. The car was left outside during the winter of 2008/9 and unused for several months. In sprint of 2009, the car was jump started and this is when the problems started occurring. 2. Regardless of cold weather, the car will accelerate. More specifically, when the gas pedal is released, the car will not decelerate. This means the car will propel itself forward. Without depressing the gas pedal, the car will sometimes achieve a speed of 40-45 MPH. By pushing the pedal down and releasing it quickly (pumping the pedal), the throttle will release and the car will come back down to idle speed. This occurs not every time but approximate 1 out of 10 times that the car is driven. 3. The tube that leads to the throttle, the accelerator cable, and the throttle body have all been replaced. There is a recall on the throttle body on this car related to this specific issue but the recall is only based on very cold ambient weather. I am experiencing this issue during warm weather also. The mechanic now thinks this is due the electronic control module (ECM).

Filed Nov 2, 2007 · Acceleration, Brakes · PA

1999 audi a6 avant with serious safety issues. Consumer would like audi to pay for the last 4 repairs that needed to be done. Consumer has had some serious safety issues with this vehicle and states that it is a lemon. *kb there was a rumbling noise coming from the engine, there was an oil leak coming from the engine, the engine light illuminated due to a bad pipe, the front rotors and pads were replaced, the transmission was leaking, the back wheels were dragging so the pads would not release, the brake and ABS light illuminated, the cruise control was inoperative, t he sunroof was inoperative, the tie rods needed to be replaced, the timing belt, water pump, gasket oil cooler and serpentine belt were all replaced.

Filed Feb 12, 2007 · Acceleration · PA · crash · 1 injury

Tl*- the contact stated that the 1999 audi a6 quattro had problems with acceleration. The vehicle accelerated on 02/05/07. The contact's wife was driving at 65 MPH when the vehicle accelerated on its own. The contact stated the only way the vehicle stopped was to push the brake pedal with both feet. The contact called the dealership and had an appointment set up for today 02/12/07. It happened again on 02/09/07. While driving the vehicle, and she was at a complete stop made a right turn and slowly accelerated to 45 MPH. The road surface was completely dry, the vehicle accelerated unexpectedly. The gas pedal went to the floor by itself without her pushing it to the floor. The driver applied the brakes with the right foot and the vehicle didn't stop. Then tried to pull the accelerator pedal up with the oe to stop the acceleration. She tried to pull the vehicle over to the side of the road, but the vehicle didn't decrease in speed. While trying to get the vehicle to come to a stop she then hit a tree. She hit the tree off the center of the front of the vehicle, and airbag didn't deploy, but the seat belt did restrain her. The contacts wife sustained neck and sternum injuries. And was taken to the hospital by an ambulance. There was a police report. The current mileage was 14000.

Filed Jan 25, 2005 · Acceleration · 94,000 miles · PA

I was traveling on pa route 476 southbound approximately 8:30 pm, maintaining a constant speed of approximately 65 MPH. The thermometer in my car reported an ambient exterior temperature of between 4 and 8 f. The cruise control switch was in the standby position but cruise control was not activated. I began to notice that the car was maintaining speed without depressing the accelerator pedal. In fact, when traveling on level ground, the car accelerated to 80 MPH until I depressed the brake pedal. The tachometer reported a constant engine speed of 2400 RPM with no pressure on the accelerator pedal. I attempted to change the engine speed by activating and deactivating cruise control, which did not respond at all. I next tapped the brakes to see if this would disengage a potential cruise control malfunction, again to no avail. The accelerator pedal was free of any obstructions and moved freely under my foot. As I approached the toll plaza, I required significant brake pressure to slow the vehicle down to approximately 15 MPH. With full brake force, the vehicle would slow to approximately 5 MPH but would not stop. I then put the transmission in neutral and the car stopped but the engine revved in excess of 6,000 RPM. I immediately shut the engine off. Upon restarting the car, the idle speed was normal. Thinking that the problem was icing and now resolved, I continued into philadelphia without incident. Upon my return to allentown the same night (approximately 10:30 pm), also on route 476, I experienced another episode of a stuck accelerator. I had been traveling at 65 MPH for about 30 minutes when the problem recurred. The ambient temperature was 3 f and the engine speed maintained 1800 ? 2000 RPM without any accelerator pedal pressure. Again, in order to stop the car, I had to place the transmission in neutral and quickly turn off the ignition key to avoid further engine damage.

Filed Dec 17, 2004 · Acceleration · 25,000 miles · MD

For the past several winters, my 1999 audi a6 2.8 quattro has had a failure in its cruise control mechanism. When ever it gets cold the cruise control often does not engage, and if it is really cold it may disengage after running for awhile even on level pavement (I.e. Not undo engine strain-normal for disengagement). The major problem lies in that, at least twice, even though the cruise control has not been made to engage on prior attempts, it has engaged latter on its own, without prompting, bringing the car up to speed. Case in point: one time when coming into a residential area, it suddenly engaged, and started to try and come up to highway speeds. The dealership has tried several attempts to rectify this fault, but has been unable to find a solution. I have even offered to drive my car up to their national headquarters for their engineers to look at. Now audi USA, will do no more toward this effort, in what I consider a serious and possible dangerous matter.

Filed Aug 12, 2004 · Acceleration · 60,000 miles · NJ

Throttle stuck. It happened during sub zero weather while consumer was driving about 70 MPH on a highway. Consumer had to use both feet on the brakes to pull over. When consumer put vehicle in park it red lined. Consumer shut vehicle off , and turned it back on without any problems. Then, dealer looked it over, and said they couldn't find any problems with the vehicle. *ak