Hi everyone I own a 2004 v6 coupe 40th ann edtion and today I passed a car and the car kept accelerating faster and faster and the crusie was not engaged after hitting 75 mph and no let up I appleid the brake brought it back down to 55 mph and let off the brake and off we went again ( I like speed but when I want it lol ) I then braked down to a stop the engine was still going at a very high rpm so I shut the car off and restarted it so far there have been no more problems . I have and appt at the dealer for tommorow since the car is still under factory warranty (20,000 miles) Can anyone tell me whay and what caused this .Thanks
Hi everyone I own a 2004 v6 coupe 40th ann edtion and today I passed a car and the car kept accelerating faster and faster and the crusie was not engaged after hitting 75 mph and no let up I appleid the brake brought it back down to 55 mph and let off the brake and off we went again ( I like speed but when I want it lol ) I then braked down to a stop the engine was still going at a very high rpm so I shut the car off and restarted it so far there have been no more problems . I have and appt at the dealer for tommorow since the car is still under factory warranty (20,000 miles) Can anyone tell me whay and what caused this .Thanks
Usually, it's something interfering with the gas pedal without the knowledge of the driver. Something that was under the seat . . .
Otherwise, it could be a cruise control switch, or a stuck throttle cable.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
It could be your floor mat. It has happened to me before. The floor mat slid forward and bunched up in front of the pedal and did not let the pedal come back up.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
It could be your floor mat. It has happened to me before. The floor mat slid forward and bunched up in front of the pedal and did not let the pedal come back up.
Particularly with boots or high heeled shoes . . . it's why there's a hook on the floormat now.
If you just had it vacuumed, they may not have installed it correctly, if you have the OEM mats.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
First, since the '04's have not an electronic throttle, and the cruise falls out as soon as you hit the brakes, it has to be a mechaical problem.
What is left now is:
- Flour mats
- Bad throttle cable (very unlikely)
- Sticking throttle blade at wot (very unlikely)
- an aftermarket part getting into the way of the throttlebody
- an electric cable getting hung up in the throttlebody / cable
- faulty cruise controll actuator
I know the 03/04 Cobra's were having similar problems and the gas pedal was getting stuck underneath the carpeting. I have never had that problem yet, but people were trimming their carpets. Worth a look.
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Current Vehicle: 2004 SVT Mustang Cobra: Born 03/03/2004 #2882 of 3768
Previous Vehicles: 2002 Mustang GT & 1998 Mustang GT
They didnt hook it up to the computer as I requested and they insist it was the carpeting hang on the pedal I disagree ..... The car was way more powerful than it had every been or has been since .I feel it was something with the electronics .I plan to take it to another dealer when I have time
I noticed a mention of the carpet I wonder why they havent recalled the cars and fixed it sounds alot cheaper than a lawsuit if some one was injured by this
They didnt hook it up to the computer as I requested and they insist it was the carpeting hang on the pedal I disagree ..... The car was way more powerful than it had every been or has been since .I feel it was something with the electronics .I plan to take it to another dealer when I have time
Computers don't work that way, and the throttle is mechanical. The computer can't engage the throttle. It's physically impossible.
on a 2005+, it could be at least "theoretically" possible, but it's simply mot possible on a pre 2004.
Cruise control can engage the throttle, but inspecting the wires and contacts would rule that out.
__________________
Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
I noticed a mention of the carpet I wonder why they havent recalled the cars and fixed it sounds alot cheaper than a lawsuit if some one was injured by this
that's why they put hooks on them now.
It may have only SEEMED more powerful,because you weren't prepared for it. But it's almost as powerful as a pre98 GT. It's no slouch.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
Hi Guys/Gals - im new to the forum, but not to mustangs.
Thought I would chime in my experience with this.
Just the other day I had a car (F150 truck, actually) almost rear end me while driving the 90 vert. I saw him coming up without braking and almost instinctively I stomped on it to get out of the way. The rear broke free and started "skating" - so I let off the gas - only it didnt stop! 'course I steered out of it and quickly shut down the engine (that was hitting the rev limiter...)
Had I not known how to drive (or rather, I think I do!) who knows what would have happened - I would have been rear ended, or when the throttle stuck I might have slid around into a ditch or maybe even oncoming traffic?
And the end of the story is - Once I shut the motor down I realized the __FLOOR_MAT__ stuck in front of the gas pedal, causing the car to stay WOT!
What surprises me is a) that this is even possible (on my other vehicles the mat cant do this), and b) that there was never a recall/dealer fix on this issue...
Sorry, but I will NEVER have a driver side floor mat in my car again. A carpet kit is 100 bucks, and thats a lot cheaper than what could have happened! And sorry, but saying they added the hook to fix the problem means they are aware of the issue. That could (i am guessing) make for a negligence suit since they didnt fix the problem going back.
Particularly with boots or high heeled shoes . . . it's why there's a hook on the floormat now.
If you just had it vacuumed, they may not have installed it correctly, if you have the OEM mats.
Listen to KS on this one, he has lots of experience driving in high heels.
Seriously though, this is not something new or limited to the Stang. I've stuck the throttle open on several cars over the years because of the damn floor mat. Even worst, I've had the damn floor mat bunch up under the pedal and prevent full throttle, there's a good ricer excuse- 'My floor mat cost me the race'. A lot of newer cars have the little hook by the seat, the old lady's Intrepid for example.
2004 Mustang Sudden And Unwanted Acceleration 
now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
