Possible causes of impact when engaging reverse gear on a Mazda automatic transmission:
*Low transmission fluid level: Check fluid level and add if necessary.
* Dirty transmission fluid: Dirty or old fluid can make it difficult to shift gears. Change the fluid according to the manufacturer’s recommendations.
*Transmission Solenoid Problems: The solenoids are responsible for controlling the flow of fluid in the transmission. A failed solenoid can cause rough shifting.
* Worn Clutches: Clutches transfer power from the engine to the transmission. Worn clutches can cause slippage and shock when shifting gears.
* Torque converter problems: The torque converter transfers torque from the engine to the transmission. A failed torque converter can cause shock when shifting gears.
* Malfunction of the electronic control unit (ECU): The ECU controls the operation of the transmission. A faulty ECU may result in incorrect gear shifting.
*Mechanical Failure: In rare cases, mechanical failure, such as damaged gears or bearings, can cause shock when shifting gears.
Diagnostics and troubleshooting:
To diagnose and resolve the problem, follow these steps:
* Check the level and condition of the transmission fluid.
* Replace transmission fluid and filter if necessary.
* Diagnose shift solenoids using a trouble code scanner.
* Check the condition of the clutches and other internal components of the transmission (removal of the transmission is required).
* Check the torque converter for wear or damage.
* Check the ECU for faults.
*If mechanical failure is suspected, have it inspected by a qualified mechanic.
It is important to correct the problem promptly as hard shifting can cause further damage to the transmission.