It may be that the carbon brush inside the starter is defective, that the gap between the hydraulic pressure inside the engine cylinder head and the valve is too great, that the screws of the lower engine guard plate are loose, etc. .
The specific reasons why Great Wall Fengjun 5 beeps after starting in winter are as follows: 1. The carbon brush inside the starter is defective. The working principle of the starter is that once power is applied, the electromagnet works to combine the starter gear with the engine flywheel. After starting the engine, the gear will quickly return to its original position. The starter gear does not return quickly, it will mesh with the flywheel It emits then beeps abnormally.
2. The gap between the hydraulic pressure inside the engine cylinder head and the valve is too large. AndSince the vehicle has traveled many miles and been used for a long time, the engine valves and hydraulic pressure will wear out to a certain extent. If the gap is too large, abnormal noise will occur.
3. The lower engine skid plate screws are loose. When the motor protection plate screws are loose, there will also be abnormal noise when starting.