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Why does an automatic transmission have high RPM but no acceleration?

1 Answers

SanRobert

07/29/25 2:07pm

Automatic transmission has high RPM but no acceleration due to the following reasons: Transmission slipping: When the vehicle experiences high RPM but no acceleration and delayed gear shifting, it is mostly caused by automatic transmission failure. Common issues like transmission slipping can lead to this situation. Transmission oil leakage: Low or high oil levels, as well as transmission oil leakage, can easily cause the oil pump to suck in air, resulting in poor lubrication and incomplete operation, which leads to slipping. Poor transmission oil quality: Check the quality of the transmission oil. If it appears dark brown or has a burnt smell, it indicates the transmission oil is severely contaminated. In extreme cases, it can even clog the oil passages, causing abnormal operation of the transmission valve body.

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