Possible reasons for automatic transmission jolts in Nissan Almera Classic:
Mechanical problems:
* Failure of automatic transmission solenoids
* Wear of clutches or steel discs
* Torque converter malfunction
* Slippage of the automatic transmission drive belt or chain
* Clogged valve body or gear selector
Electronic problems:
* Malfunction of automatic transmission sensors (speed sensor, gear selector position sensor)
* Errors in the automatic transmission control unit
* Incorrect operation of the automatic transmission wiring
Software problems:
* Failure in automatic transmission calibrations
* Outdated version of automatic transmission control unit software
Transmission fluid problems:
* Insufficient ATF level
* Loss of ATF properties due to prolonged use or overheating
* ATF contamination by wear products or external impurities
Other reasons:
* Engine malfunction (misfire, reduced power)
*Transmission problems (worn joints or bearings)
* Air in the automatic transmission hydraulic system
Troubleshooting:
To eliminate shocks in the automatic transmission, it is necessary to carry out diagnostics:
* Read error codes from the automatic transmission control unit
* Check ATF level and condition
* Check the operation of automatic transmission sensors and solenoids
* Carry out computer diagnostics of the automatic transmission and engine
* If necessary, replace faulty components, update software or overhaul the automatic transmission
Tips for operating automatic transmission:
* Monitor the level and condition of ATF, and change it according to regulations
* Avoid sudden starts and braking
* Do not overheat the automatic transmission (do not skid or pull heavy loads)
* Regularly service the automatic transmission (cleaning the valve body, replacing solenoids)