12v reverse solenoid valve AT179491 for 710J 710K 410E 210LE 410G 710D 485E 310E 710G 310G

     Solenoid valve is an important electric actuator to ensure the normal operation of automatic transmission. The different states of the solenoid valve correspond to different gears, and its working state also affects the working state of the automatic transmission. Naturally, the detection of the solenoid valve is also an essential part of the automatic transmission maintenance process. What happens when the automatic transmission solenoid valve breaks?

1. The gearbox will not downshift. If the gearbox does not downshift, one of the shift solenoid valves may be stuck in the on/off position, which will prevent oil from entering the gearbox body to pressurize the correct gear.

2. Serious shift delay/neutral is caused by the shift of the electronic automatic transmission, and the electromagnet must be able to adjust the hydraulic oil to start the appropriate gear. If the shift solenoid receives too much or too little current, or if dirty transmission oil affects its opening/closing, gear meshing can become difficult or delayed, which can affect transmission operation as if it were temporarily locked in the transmission.

3. Shifting gears is wrong. The transmission solenoid valve is faulty. The transmission can skip a gear, shifting back and forth between gears repeatedly, or it can refuse to shift because it is stuck in first gear.

Common transmission solenoid valve failure performance and solution
The main parts of the car are the so-called "three big parts" : engine, transmission, chassis, no matter which failure costs are not small, so we need to find the problem as soon as possible and solve it. Today, the small edition of the common transmission solenoid valve failure performance and solutions are briefly analyzed.

1. Fault performance: you can obviously feel the difficulty of starting the car. Although the speed of the accelerator is increased while driving, there is no obvious sign of acceleration.
Solution: Go to the professional store in time to check and add transmission oil to make the transmission gear better lubricated.

2. Fault performance: After the car starts, when the P gear is placed in other gear, the engine will stop immediately.

Solution: Pull over and wait for help. Do not continue driving to avoid further serious losses.

3. Fault performance: During driving, the engine idling sound can be heard when the fuel door is fueling (similar to the feeling of stepping on the accelerator in P or N gear), but the car has no obvious acceleration, and the acceleration is weak; There is also a situation that the flat road is basically normal, but the uphill is relatively weak, and the engine speed is very high.
Solution: Pull over and wait for help. Do not continue driving to avoid further serious losses.