Possible causes of knocking noise when shifting gears in a Mitsubishi Outlander automatic transmission:
1. Worn friction discs:
*Over time, the friction discs in the transmission wear out, causing slippage and shifting shock.
2. Problems with the valve body:
* The valve body controls the fluid flow into the automatic transmission. If it has problems, it can cause harsh gear changes and knocking noises.
3. Faulty solenoids:
* Solenoids are solenoid valves that control the flow of fluid into the automatic transmission. Their malfunction can lead to incorrect operation of the gearbox and shock when shifting.
4. Torque converter wear:
* The torque converter transfers power from the engine to the transmission. Its wear can lead to rattling and knocking noises when shifting gears.
5. Low automatic transmission fluid level:
* Insufficient automatic transmission fluid level can lead to insufficient pressure and slipping of the friction discs, which leads to shock when switching.
6. Automatic transmission fluid contamination:
* Dirty automatic transmission fluid can clog the valve body and solenoids, impairing transmission performance.
7. Electrical problems:
*Electrical problems, such as faulty sensors, can cause the automatic transmission to malfunction and make knocking noises when shifting gears.
What to do if you hear a knocking noise when shifting gears:
* Check the automatic transmission fluid level and its condition.
* Check for fault codes using an OBD2 scanner.
* Take the car for diagnostics and repair to a car service specializing in automatic transmission repair.