Why does the Baojun 510 automatic transmission sometimes fail to engage gears?
2 Answers
Possible causes include abnormalities in the release bearing or shift fork shaft. Release bearing working principle: The clutch release bearing is installed between the clutch and the transmission. The release bearing housing is loosely fitted on the tubular extension of the transmission's first shaft bearing cover. A return spring ensures the shoulder of the release bearing always presses against the release fork and retracts to the rearmost position, maintaining a gap of approximately 3-4mm with the end of the release lever (release fingers). Shift fork shaft working principle: The shift fork is a device that pushes the sliding gear. The sliding gear has a ring groove where the shift fork sits. When the driver operates the gear lever, it drives the shift fork shaft, which moves the shift fork, and the shift fork then pushes the gear to achieve gear shifting.
I encountered similar issues with my Baojun 510 automatic transmission. The most common problem was a malfunctioning shift mechanism. When the gear position sensor gets dirty or stuck, the ECU can't read the signal and fails to engage gears. Once after car washing, water seeped into the shift base, causing a short circuit in electronic components that completely disabled shifting - had to tow it for repairs. Cold starts in winter often cause gear sticking too; it improves when transmission fluid warms up, but frequent occurrences indicate the fluid needs changing. A faulty brake light switch is more troublesome - this vehicle requires brake pedal depression to shift gears, and switch failure will directly lock the gear position. If the transmission control module crashes, sudden gear engagement failure occurs, though restarting the vehicle provides temporary recovery, but electronic systems must be inspected promptly.