What Causes the Toyota Camry to Shake?
1 Answers
The reasons for the Toyota Camry shaking are as follows: 1. Severe engine carbon buildup: The most common cause of car shaking is a dirty throttle body or excessive carbon buildup in the fuel injectors. When there is too much carbon inside the engine, the gasoline sprayed by the cold-start injector is largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts and making it difficult to start. In this situation, the car will only start easily once the carbon deposits have absorbed enough gasoline to become saturated. After starting, the gasoline adsorbed on the carbon deposits is then sucked into the cylinders by the engine's vacuum for combustion, making the air-fuel mixture too rich. This fluctuation between lean and rich mixtures causes the engine to idle roughly after a cold start. 2. Ignition system issues: Check the condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance in the ignition system or weak sparking from the spark plugs can also lead to such symptoms. The solution is to inspect whether 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, throttle body, replaced the gaskets and spark plugs, but still notice the car shaking at idle, it is recommended to visit a 4S shop to check the fuel supply pressure and the intake pressure sensor. Abnormal fuel pump pressure or incorrect readings and poor performance from the intake pressure sensor can both cause the car to shake. The solution is to check the fuel pressure and replace components if necessary. 4. Aging engine components: Car shaking can also be related to worn engine mounts. Engine mounts act as the engine's shock absorption system, responsible for absorbing minor vibrations during operation. If the engine mounts are faulty, these vibrations will be transmitted to the steering wheel and the cabin, causing shaking at idle.
