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Why does the Corolla have high RPM but can't pick up speed?

1 Answers

StLukas

07/29/25 2:23pm

If the engine RPM is high but the speed does not increase, it must be a problem with the clutch or transmission, as the power generated by the engine is not being transmitted to the wheels. The engine's power is first transmitted to the clutch. If the clutch disc is severely worn or the clutch pressure plate spring is damaged, it can result in incomplete power output, causing a discrepancy between the power generated by the engine and the power output. If the transmission is not engaged in the correct gear, this issue can also occur. Below are specific details about the Corolla: 1. Powertrain: The Toyota Corolla is equipped with a 1.2T CVT powertrain, which aligns with the current trend in automotive powertrains—small-displacement turbocharged engines paired with CVT continuously variable transmissions, making it an excellent choice for daily commuting. The small-displacement turbocharged engine can deliver performance comparable to a 1.8L engine, though the 1.2T engine exhibits slight turbo lag. 2. Manual Transmission: If a manual transmission is used, the primary cause of this issue lies with the clutch or transmission. The clutch acts as an intermediary for power transfer between the engine and transmission. If the clutch friction disc is slipping, it can lead to power loss. Manual transmissions have high transmission efficiency, so if the clutch is not the issue, potential faults could be related to the output shaft or the engagement gears of the transmission.

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