Reasons for Camry Car Shaking?
2 Answers
Here are the specific reasons for Toyota Camry shaking: 1. Severe engine carbon deposits: The most common cause of car shaking is excessive dirt on the throttle body or carbon buildup in the fuel injectors. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold-start injector will be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making ignition difficult. In this situation, the car will only start easily after the carbon deposits have absorbed enough gasoline to reach saturation. After starting, the gasoline adsorbed on the carbon deposits will be sucked into the cylinders by the engine's vacuum for combustion, making the air-fuel mixture too rich. The engine's combustible mixture alternates between being too lean and too rich, causing idle shaking after a cold start. 2. Ignition system issues: Check the working condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or weak spark plug firing can also lead to such faults. The solution is to check if the spark plugs have excessive carbon buildup and replace them if necessary. 3. Unstable fuel pressure: If you have already cleaned the engine carbon deposits, cleaned the throttle body, replaced the gaskets and spark plugs, but still notice the car shaking at idle, it is recommended to check whether the fuel supply pressure and intake pressure sensors are functioning properly. Abnormal fuel pump pressure or incorrect readings and poor performance of the intake pressure sensor can both cause the car to shake.
My Camry also had a vibration issue before. That time, the steering wheel shook noticeably while waiting at a red light. I initially suspected unbalanced tires since I had just replaced them without getting a wheel balance. Then, upon inspecting the engine area, I thought it might be misfiring due to worn-out spark plugs, especially noticeable when accelerating uphill. Carbon buildup can also cause unstable idling, so it's essential to clean the throttle body and fuel lines regularly. Don't overlook warped brake rotors or worn suspension components, particularly fatigued front shock absorbers. In short, start with the simplest checks like tire pressure and wheel rims to save a lot of trouble. If the problem persists, it's best not to delay—visit a professional shop for diagnosis to ensure safe driving. After all, it's a common issue; preventive maintenance is better than breaking down on the road.
