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Why Can't the Automatic Transmission Shift from 5th to 6th Gear?

1 Answers

DelBentley

07/25/25 9:25pm

Automatic transmission fails to shift from 5th to 6th gear due to internal dirt and impurities. Specific causes and solutions are as follows: Specific causes: In many cases, it is not due to internal valve body damage but rather the presence of stubborn dirt and impurities inside. Particularly when dirt and impurities accumulate inside the valve body, forming blockages, it prevents effective regulation of oil pressure, leading to jerking, impact, and slippage issues, making gear shifting difficult. Solutions: To completely resolve the gear shifting issue and prevent its recurrence, it is necessary to remove stubborn dirt and impurities from the transmission and effectively control the transmission's operating temperature.

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