Toyota Corolla automatic transmission repair
Common problems and symptoms:
* Gear slippage
* Jerks and jolts when changing gears
* Delay when shifting gears
* Extraneous noise (buzzing, humming)
*Check Engine Light Is On
* Transmission does not shift to higher gears
Repair process:
1. Diagnostics
* Questioning the car owner about symptoms and service history
* Scan fault codes
* Inspection of gearbox and related components
2. Removing the gearbox
* Disconnecting the transmission from the engine and disconnecting hoses, electrical connectors and driveshaft
* Carefully remove the gearbox from the vehicle
3. Disassembly and inspection
* Gearbox disassembly
* Inspect all components for signs of wear or damage
* Cleaning and troubleshooting of parts
4. Replacement and repair of parts
* Replace worn or damaged components such as friction plates, torque converter, solenoids and planetary gear.
* Repair of couplings, bearings and other internal components
5. Assembly and installation
* Gearbox assembly using new gaskets and seals
* Installing the gearbox in the car and connecting all components
* Filling with transmission fluid
6. Adaptation and customization
* Connecting a scanner to adapt the gearbox to the car
* Clear fault codes and check functionality
7. Testing and inspection
* Test drive to check the correct operation of the gearbox
* Gear shift test, checking for leaks and abnormal noise
Repair cost:
Repair costs vary depending on the Corolla model, year of manufacture, complexity of the repair needed and cost of parts. Typically, an automatic transmission overhaul can cost between $1,500 and $3,000.
Prevention:
* Regular transmission maintenance, including changing transmission fluid and filter
* Avoiding hard acceleration and extreme driving conditions
* Malfunctions in other vehicle systems, such as the speed sensor or control module, can affect the operation of the transmission, so these should also be corrected promptly.