What are the causes of Chery engine idle vibration?
2 Answers
Possible causes include ignition system issues or the need for throttle body cleaning. Ignition system issues: Spark plugs have a limited lifespan. If spark plugs have been used for an extended period, they may experience poor sparking, leading to unstable idle conditions. Therefore, it's essential to promptly inspect the ignition system components, including spark plugs, to determine if replacement is necessary or if excessive carbon buildup is present. If such conditions are confirmed and are causing engine idle vibration, immediate replacement of spark plugs or cleaning is required. Throttle body needs cleaning: The proper functioning of the throttle body directly affects engine performance. During vehicle operation, carbon deposits can accumulate in the throttle body. Excessive carbon buildup can obstruct normal engine air intake, resulting in insufficient engine power to drive the compressor adequately or barely enough to do so. In such cases, when starting the car and turning on the air conditioning, idle vibration may occur. Thus, it's crucial to check the cleanliness of the throttle body and clean it promptly if necessary.
My Chery car shakes violently at idle, which needs careful consideration. Worn spark plugs or faulty ignition coils can cause a cylinder to misfire; carbon buildup in the throttle body or fuel injectors can disrupt air intake and fuel supply; aging engine mounts lose their damping effect. Poor fuel quality with impurities in the fuel system can also lead to rough idling due to improper fuel injection. Last time, I replaced the engine mounts myself, and it improved significantly—cheap and effective. Regularly changing the air filter and cleaning carbon deposits every 20,000 kilometers can prevent this. The key is to troubleshoot systematically: first check if the warning light is on, then test cylinder compression and read the ECU data stream, avoiding unnecessary part replacements.
