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What is the reason why the FAW Weizhi semi-automatic gear cannot be engaged?

2 Answers

StDelaney

07/28/25 10:14pm

Here are the reasons why the FAW Weizhi semi-automatic gear cannot be engaged: 1. Solenoid valve: Caused by the solenoid valve, which has a small valve core that operates by electric current, similar to the working valve in the valve body. This leads to unstable oil pressure regulation and uneven switching. 2. Mechanical failure: Mechanical failure caused by internal wear of the transmission. 3. Brake clutch: Slippage caused by brake clutch pressure leakage, or abnormal data reading due to sensor issues. 4. ECU failure: Sensor or ECU problems can cause the transmission to lock. Restarting the ignition will allow the vehicle's computer to re-detect the transmission data, and the issue may be resolved after restarting.

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VonJake

08/12/25 2:46am

I also experienced trouble shifting gears when driving a FAW Vizi. That time on the highway, no matter how hard I pushed, it wouldn't budge. Later, after inspection, it was found that the motor in the shift mechanism was stuck, or the transmission control module had failed—both common issues in AMT systems. Sometimes, insufficient lubrication can make the gear lever stiff, or internal wear and deformation of the linkage can prevent it from locking into place. At the time, I tried turning the car off and restarting it, and after a few attempts, it surprisingly engaged again. But for safety, I immediately went to a repair shop. The professional mechanic diagnosed it with a computer and replaced the faulty parts, which completely fixed the issue. After daily drives, remember to check the transmission fluid to avoid such headaches—after all, not being able to shift properly is really frustrating. If you encounter similar issues, don't push through it; find a reliable repair shop to inspect the electronic control system to prevent small problems from turning into big troubles.

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