How does a trans speed sensor function?
A car’s transmission speed sensor is responsible for working out how fast the vehicle is travelling , and communicating this information to the engine control unit (ECU) – the ‘brain’ of the car. When the ECU in an automatic car receives this information, it is able to select the optimal gear for efficient driving at that speed.
What does a bad speed sensor do?
A bad speed sensor most often affects the shifting of the automatic transmission. However, in cars with an onboard computer, the sensor also affects the ABS system, speedometer, cruise control and power steering. Proper diagnosis and repair is essential for safe operation of the car.
How does a speed sensor go bad?
A broken or damaged magnet on the motor can result in a bad speed sensor. If this is replaced with a new magnet, the speed sensor will begin to function properly. Alternatively, the magnet could have just come loose.
What are the symtoms of a bad transmission speed sensor?
- your speedometer may not work.
- the transmission control unit (TCU) may have a hard time knowing when or how quickly to shift gears.
- No Cruise Control
A car’s transmission speed sensor is responsible for working out how fast the vehicle is travelling , and communicating this information to the engine control unit (ECU) – the ‘brain’ of the car. When the ECU in an automatic car receives this information, it is able to select the optimal gear for efficient driving at that speed.
A bad speed sensor most often affects the shifting of the automatic transmission. However, in cars with an onboard computer, the sensor also affects the ABS system , speedometer, cruise control and power steering. Proper diagnosis and repair is essential for safe operation of the car.
A broken or damaged magnet on the motor can result in a bad speed sensor. If this is replaced with a new magnet, the speed sensor will begin to function properly. Alternatively, the magnet could have just come loose.