general problems of the 1999 Ford Mustang

Seven problems related to vehicle speed control have been reported for the 1999 Ford Mustang. The most recently reported issues are listed below.

1 Vehicle Speed Control problem

Failure Date: 01/20/2018

I have having issues with wiring. Wide shield wipers don't work, multiple head lights are out and dome light stays on sometimes.

2 Vehicle Speed Control problem

Failure Date: 09/29/2003

When slowing down vehicle idle speed drops,and suddenly picks up, causing car to lurch forward.

3 Vehicle Speed Control problem

Failure Date: 02/08/2003

Unpredictable problem. Occasionally, 5 to 15 seconds after I first start my 1999 Mustang gt, the engine will rapidly increase in rpm and then return to normal. If the car is in drive or reverse and I do not have my foot firmly on the brake, the car will jump forward or backward. I notice the problem mostly when I first put the car in reverse. It may happen 3 or 4 times in one month and may not happen again for 2 or 3 months. If you do not have the brake applied firmly, I think the car could easily jump 5 feet before getting a foot on the brake. I currently have 29,000 miles on my car. I purchased it new in the middle of 1999. This has been a problem since the car was new. During a previous in warranty repair, I told the dealer about this problem and that sometimes it also had a rough idle. They could not reproduce either of the problems during testing. Now the car has a sporadic cold idle problem which has gotten worse. I do not know if it is related. I would guess the "rapid rpm increase at idle problem" has occured between 25 and 50 times while I was driving the car. At first, I thought maybe I was bumping the gas pedal. After repeat occurences I started paying close attention. My foot never touched the gas pedal when the car jumped unpredictably. I think it is important to note that I am very happy with this car. For the most part, I am a very happy customer of Ford motor CO. However, this problem concerns me greatly from a point of safety becuase pedestrians could be walking in front of or behind the car when the problem occurs.

4 Vehicle Speed Control problem

Failure Date: 02/01/1999

While waiting to go into traffic vehicle leaped ahead, causing consumer to hit a pickup truck. One injury was sustained.

5 Vehicle Speed Control problem

While making a stop the vehicle vehicle would acclerate, causing vehicle to lose control. Please provide further information.

6 Vehicle Speed Control problem

Car idles too high, will maintian speed with no pedal pressure. In traffic must brake continually to slow car down. Car initially would not idle at all, idle air control valve was replaced. Now car has varying high idle. After four repair attempts problem still exists.

7 Vehicle Speed Control problem

The car lurches forward or backward without warning after placing in gear. Rpms go down, then surge causing vehicle to "launch" whatever direction you're aimed at. This has been going on or 1 1/2 years. 25 days in shop to no avail. Blaine @ Ford customer assistance, is well aware of it (file # 203312)yet nothing is being done. The car is fast, runs clean, uses no oil, performs well, except for the launching situation. Ca consumer affairs contacted as well. I love the car, but want it fixed before someone gets hurt!!.


Other Vehicle Speed Control related problems of the 1999 Ford Mustang



Safety Ratings of Mustang Cars
Fuel Economy of Mustang Vehicles
Mustang Service Bulletins
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Mustang Defect Investigations