Common reasons:
*Lack or contaminated transmission fluid (ATF): Insufficient ATF levels can cause the clutch to overheat and slip, causing vibrations. Contaminated ATF can clog valves and passages, which also leads to malfunctions.
* Clutch Wear: Over time, the clutches in a transmission wear out, which can cause slippage and jerking.
* Malfunction of gear shift solenoids: The solenoids are responsible for shifting gears. If they are faulty, gears may shift at the wrong time or incorrectly, causing jerking.
*Transmission Speed Sensor Malfunction: This sensor provides information about the rotational speed of the transmission input shaft. If it is faulty, the transmission control module may receive incorrect signals and shift gears incorrectly.
* Torque Converter Malfunction: The torque converter transmits power from the engine to the transmission. If it is faulty, it may slip or vibrate, causing jolts.
Other possible reasons:
* Worn or damaged carrier: The carrier connects the drive and driven gears in the transmission. Wear or damage can cause slipping and jolting.
* Shift servo malfunction: The shift servo controls gear shifting. Its malfunction can lead to inaccurate or delayed shifts, which causes jerks.
* Clogged Oil Filter: A clogged oil filter restricts ATF flow, leading to overheating and wear.
*Transmission control module (TCM) malfunction: The TCM controls all aspects of the transmission. Its malfunction can lead to incorrect gear shifting and jerking.
* Incorrect control cable adjustments: The shift cable connects the shift lever to the transmission. Incorrect adjustment may result in gears not engaging fully, causing jerking.
* Engine Problems: Engine problems such as low oil pressure or faulty sensors can affect transmission performance and cause jerking.