AL4 257416 Transmission solenoid valve oil pressure for Citroen Peugeot Renault

The AL4 257416 Transmission wave box solenoid valve is a key component used in automatic transmissions. Details are as follows:

1. Applicable vehicle type:

① Mainly applicable to Peugeot Citroen series models, including Peugeot 206, 207, 307, C2 Sega, Triumph, etc., as well as Citroen Picasso, Sena, Elysee, Fukan and other AL4 transmission models.

② It also applies to some Chery models.

2. Function:

① As the transmission oil pressure regulating solenoid valve and the torque converter locking solenoid valve, it controls the oil pressure and the locking action of the torque converter inside the gearbox.

② During the shift process, the opening of the solenoid valve will be adjusted to improve the smoothness of the shift.

③ Different solenoid valves control different clutches or brakes to ensure that they play a role in different gears.

3. Fault performance:

① When the solenoid valve fails, there may be a strong sense of driving frustration, transmission alarm, triangle exclamation light and other fault phenomena.

② For example, S snow lights flashing, shift impact, triangle symbol lamp alarm, etc., may be the performance of solenoid valve failure.

4. Replacement suggestion:

When replacing the solenoid valve, the wave tank oil also needs to be replaced.