What is the reason for the Highlander's engine power reduction warning?
2 Answers
Insufficient power is most commonly caused by carbon buildup on the spark plugs. When a vehicle has been used for a long time or the fuel quality is poor, carbon deposits on the spark plugs can increase, affecting the accuracy of ignition. In mild cases, this can cause power lag, while in severe cases, it can lead to insufficient power or even failure to start the engine. Additional information about the engine is as follows: 1. Introduction: An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, and electric motors. For example, internal combustion engines typically convert chemical energy into mechanical energy. The term 'engine' can refer to both the power-generating device and the entire machine, including the power unit. 2. Structure: The engine block serves as the framework of the engine and is the installation base for all its mechanisms and systems. It houses all the main components and attachments of the engine and bears various loads. Therefore, the engine block must have sufficient strength and rigidity. The engine block assembly mainly consists of components such as the cylinder block, cylinder liner, cylinder head, and cylinder gasket.
I previously encountered this situation when driving a Highlander. It's usually caused by issues with the sensors or fuel system. Common reasons include a dirty or faulty oxygen sensor, where the engine computer detects an abnormality and automatically limits power to prevent damage, or clogged fuel injectors leading to incorrect air-fuel mixture. Another possible cause is the intake system, where a dirty or clogged air filter affects oxygen intake. Additionally, exhaust system issues like a blocked catalytic converter can increase backpressure, resulting in reduced power. I once experienced this on the highway and was fortunate to address it promptly. It's advisable to stop and inspect the vehicle immediately rather than continuing to drive, to avoid more serious malfunctions or safety hazards, especially during long-distance trips where extra caution is necessary.
