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Why does an automatic transmission have high RPM but cannot accelerate?

1 Answers

StStephen

07/29/25 3:04pm

Automatic transmission has high RPM but cannot accelerate because the transmission oil is too dirty or insufficient, causing the transmission to malfunction and requiring immediate inspection. The following are specific reasons: Insufficient transmission oil: Check the transmission oil level. If the level is too low or too high, it should be adjusted accordingly. If the oil level is too low or too high, or if there is a transmission oil leak, it can easily cause the oil pump to suck in air, resulting in poor lubrication and incomplete operation, leading to slipping. Dirty transmission oil: If the oil appears dark brown or has a burnt smell, it indicates that the transmission oil is very dirty. In severe cases, it can even clog the oil passages, causing abnormal operation of the transmission valve body. In this case, the transmission oil needs to be replaced.

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