1999 Ford Explorer: misfire or rough idle

Filed Oct 9, 2006 · Engine · 50,000 miles · NC

When the automobile(ford explorer 1999 sohc v6) is in cold weather and you start it it seems to misfire or act like there is an air leak. I have read several post on the internet and people seem to see this problem alot on certain year ford explorers. The have said that it is caused by an air leak around the exhaust manafold that only shows up when the engine is cold because the part is shrunk and does not fit but once the car warms up the part expands and acts as if there is no problems. When starting the car in warm weather you never see this problem. I have not had this fixed on my car since I park in a garage I rarely see this.

Filed Feb 17, 2003 · Electrical · 20,520 miles · NY

Spark plug wires failing. Vehicle has only 20500 miles. Resulted in severe vehicle bucking, misfiring, loss of acceleration, and unpredictable engine performance.two occurrences to tw0 different plug wires within 20 miles. Number 3 and 7 aluminum heat shielded wires.

Filed Jan 16, 2003 · Electrical · 35,684 miles · NC

Spark plug wires failing. Vehicle has only 35000 miles. Resulted in severe vehicle bucking, misfiring, stalling, loss of acceleration, and unpredictable engine performance. 3 occurrences to three different plug wires within 300 miles

Filed Jan 24, 2002 · Engine, Suspension · MA

While driving, throttle/ air bypass valve malfunctions which causes accelerator pedal to stick, and pedal goes nearly to the floor. Also pedal has to be pumped before it releases. *ak the dealer said they can fix the problem, but the vehicle still hesitates and there is rough idle, the lower ball joints failed, and were replaced.

Filed Oct 27, 2000 · Electrical · MN

Vehicle fails to start on occasion; runs rough on occasion..