Possible Causes:
* Cable Sticking: The most common cause is a problem with the throttle cable itself. It might be frayed, binding, or stuck in the sheath. Dirt, debris, or corrosion can also cause this.
* Throttle Body: The throttle body butterfly valve might be sticking due to carbon buildup, debris, or a malfunctioning sensor.
* Return Spring: The spring that returns the throttle to its idle position might be broken or weakened.
* Vacuum Leak: A severe vacuum leak could affect the throttle's response, potentially causing it to stick or hang open.
* Electronic Throttle Control (ETC) Issues (Less Likely on a 2001): While less likely on a 2001 (which likely has a cable-operated throttle), an issue with the electronic components of a drive-by-wire system (if equipped) could also cause this.
* Internal Engine Problem (Rare): In extremely rare cases, an internal engine problem could cause a runaway engine, simulating a stuck throttle.
What to Do:
1. Safety First: Do not attempt to drive the vehicle. Park it in a safe location away from traffic and other vehicles. Turn off the engine immediately.
2. Check the Throttle Cable: Carefully inspect the throttle cable connecting the gas pedal to the throttle body. Look for kinks, fraying, or anything that might be preventing it from moving freely. Try gently working the cable back and forth (with the engine off).
3. Check the Throttle Body: If the cable seems okay, visually inspect the throttle body. You might need to use a flashlight. Look for any obstructions or buildup that might be preventing the butterfly valve from closing completely.
4. Engine Off: While the engine is off, try to manually move the throttle lever on the throttle body. It should move smoothly and return to its idle position.
5. Towing: Do not attempt to fix this while the engine is running. Have the vehicle towed to a qualified mechanic. This is not a DIY job unless you are very experienced with automotive repair, especially given the safety implications.
6. Emergency Assistance: If you are in a dangerous location or the vehicle is posing an immediate risk, call for emergency assistance.
Important Considerations:
* A stuck throttle is a critical safety hazard. Ignoring it could lead to an accident.
* A mechanic will need to diagnose the exact cause and perform the necessary repairs, which may include cable replacement, throttle body cleaning or replacement, spring replacement, or other repairs.
Don't delay getting this issue addressed. Your safety and the safety of others depend on it.
