1. Faulty Throttle Position Sensor (TPS): The TPS monitors the position of the throttle valve and sends a signal to the Engine Control Unit (ECU) to adjust fuel delivery and ignition timing. A faulty TPS can provide incorrect data, causing the engine to run lean or rich, resulting in reduced power and rough idling.
2. Clogged Fuel Filter: A clogged fuel filter restricts the flow of fuel to the engine, causing a lean air-fuel mixture and reduced power.
3. Faulty Fuel Pressure Regulator: A faulty fuel pressure regulator can cause insufficient fuel pressure, leading to a lean air-fuel mixture and reduced power.
4. Vacuum Leak: A vacuum leak can introduce unmeasured air into the engine, causing a lean air-fuel mixture and reduced power.
5. Catalytic Converter Issues: A clogged or damaged catalytic converter can restrict exhaust flow, causing the engine to work harder and produce less power.
6. Transmission Problems: Transmission issues, such as slipping or faulty shifting, can cause the engine to rev high without producing enough power to the wheels.
7. Ignition System Problems: Faulty spark plugs, ignition wires, or ignition coil can cause misfires and reduced power.
8. Oxygen Sensor Issues: A faulty oxygen sensor can provide incorrect data to the ECU, affecting the air-fuel mixture and causing reduced power.
9. Faulty Mass Air Flow (MAF) Sensor: The MAF sensor measures the amount of air entering the engine and provides data to the ECU for proper air-fuel mixture calculation. A faulty MAF sensor can provide incorrect readings, leading to reduced power.
10. Engine Mechanical Issues: Internal engine problems, such as worn piston rings, damaged valves, or low compression, can cause reduced power.
To accurately identify the root cause of the problem, it's recommended to have a qualified mechanic diagnose the issue using appropriate diagnostic tools.
