How to Solve the Problem of High Idle Noise in Corolla Hybrid?

[Guzman]

Solutions for high idle noise in Corolla Hybrid are as follows: 1. Step on the accelerator. If you notice that acceleration is not obvious, there is a lack of power, and the engine makes a hysterical sound. This is most likely to occur when the engine is hot, or cold, or when it is short of oil. Small-displacement engines may also experience this when accelerating too harshly. The causes of such problems can be divided into issues with the air filter, spark plugs, ignition wires, gasoline, gasoline filter, carburetor, oil pump, etc. 2. When driving, acceleration may also be normal, and ignition may also be normal, but if you find that the engine speed is too high but the speed seems to still not increase when driving at a constant speed. Try checking the coolant, oil pressure is too high, or too low, check the oil pressure gauge, and it may also be that the ignition timing setting is problematic, which can also lead to such symptoms.