1. Immediate Actions (While the vehicle is stopped and in a safe location):
* Turn the ignition off: This is the most crucial step. Turning the ignition off will cut power to the engine and prevent further acceleration.
* Shift to Neutral (if possible and safe to do so): If you can safely reach the gear shifter without risking further problems, shift into neutral. This will help prevent the vehicle from rolling forward unexpectedly. However, *prioritize turning off the ignition first.*
* Engage the parking brake: Firmly apply the parking brake.
2. Identifying the Cause (After the vehicle is safely stopped):
The cause of a stuck accelerator can vary. Common causes include:
* Something lodged under the pedal: A piece of debris, a mat, or even a child's toy could be trapped under the pedal.
* Mechanical failure: The accelerator cable could be binding or broken. This is less likely, but possible.
* Electronic issue: While less common in 1999 Explorers, a malfunctioning throttle position sensor (TPS) or electronic throttle control (ETC) system *could* theoretically cause a sticking issue (though typically they would cause erratic acceleration, not a permanently stuck pedal). This is less likely than mechanical causes in this model year.
3. Troubleshooting:
* Visually inspect the pedal: Carefully examine the area around the accelerator pedal for any obstructions. Remove anything that might be trapped.
* Try to manually move the pedal: Gently attempt to free the pedal by applying pressure to lift it. If it's stuck and you can't move it, do not force it.
* Check the accelerator cable (if accessible and you are mechanically inclined): If you're comfortable working on cars, you might be able to inspect the accelerator cable for kinks or breaks. However, this requires some mechanical knowledge and access under the dashboard. This step is best left to a professional.
4. Seeking Professional Help:
If you cannot easily free the accelerator pedal, do NOT attempt further repairs yourself. This situation requires the expertise of a qualified mechanic. A stuck accelerator pedal can indicate a serious mechanical problem that requires professional diagnosis and repair.
Towing the Vehicle: Have the vehicle towed to a qualified mechanic or repair shop. Explain the situation clearly to the tow truck driver and emphasize the safety hazard.
Important Safety Note: Never attempt to drive a vehicle with a stuck accelerator pedal. The consequences can be catastrophic. Your safety and the safety of others is paramount.
