What are the reasons for the steering wheel shaking at idle speed when the Changan CS55 is cold?
2 Answers
The reasons for the steering wheel shaking at idle speed when the Changan CS55 is cold include: 1. Excessive carbon deposits or aging of the engine; 2. Poor fuel quality; 3. Incorrect positioning of the engine mounts. The Changan CS55 is a compact SUV under the Changan brand, with body dimensions of 4500mm in length, 1855mm in width, and 1690mm in height, and a wheelbase of 2650mm. The Changan CS55 is equipped with a 1.5T 156 horsepower L4 engine, paired with a 6-speed manual transmission, delivering a maximum power of 115 kW and a maximum torque of 225 Nm. The front suspension type is MacPherson independent suspension, and the rear suspension type is multi-link independent suspension.
When driving my Changan CS55, I also experienced steering wheel vibration during cold starts. This issue is mainly caused by uneven engine combustion. In cold weather, the engine operates less efficiently. If the spark plugs are aged and fail to ignite properly, or if the fuel injection is too much or too little, the air-fuel mixture ratio becomes unbalanced, making the engine unstable like it's gasping for breath. Problems with the ignition coil can also cause this, as its performance drops in low temperatures, leading to fluctuating idle speeds and vibrations. Clogged fuel injectors can have the same effect, causing poor gasoline atomization and uneven combustion. From my experience, the first step is to check the spark plugs—replacing them if they're heavily carbon-fouled can alleviate the issue. Regularly changing the engine oil and maintaining the ignition system is crucial, and don't wait until the vibration worsens and affects driving safety.
