What's the reason for an automatic transmission lacking high gear?

1 Answers
DiConnor
07/29/25 1:24pm
Generally, it's due to a faulty solenoid valve in the transmission that causes the automatic transmission to lack high gear. Differential Introduction: The automotive differential is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. It mainly consists of left and right axle gears, two planetary gears, and a gear carrier. Function of the Differential: The purpose of the differential is to adjust the speed difference between the left and right wheels. When the car is turning or driving on uneven roads, the differential allows the left and right wheels to roll at different speeds, ensuring that both drive wheels perform pure rolling motion.
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