What Causes Vibration at 130 km/h but Not at 120 km/h on the Highway?
2 Answers
The reason for vibration at 130 km/h but not at 120 km/h on the highway may be due to excessive carbon deposits, fuel supply system failure, etc. Excessive Carbon Deposits: If there is severe carbon buildup inside the engine cylinders, it can lead to clogged spark plugs and valves, directly causing the car to vibrate at idle. If the car's acceleration performance has significantly deteriorated and the vibration is persistent, it may be time to consider cleaning the engine cylinders. Fuel Supply System Failure: Unstable fuel pressure can easily cause fluctuations in the concentration of the air-fuel mixture, not only resulting in vibration but also causing unstable idle speed. First, consider replacing the fuel filter, as the filter element may become clogged after prolonged use. Then, check the fuel pressure that bypasses the fuel filter. If it is abnormal, the issue might be with the fuel pump.
I've been driving for many years. Once on the highway, the car was very stable at 120 km/h, but as soon as I hit 130, the steering wheel started shaking violently. After some troubleshooting, I learned it was mostly likely a tire balancing issue: aging tires or unbalanced wheels can amplify centrifugal force at high speeds, causing resonance. Loose suspension components like shock absorbers or ball joints can also contribute to the problem. I recommend checking your wheels promptly and getting them balanced. Don't skimp on routine maintenance - highway safety is paramount, and early intervention prevents accident risks. Recurring issues like this can easily damage other components like drive shafts, increasing repair costs. Develop regular maintenance habits, such as getting a four-wheel balance every 20,000 km, to ensure driving comfort and reliability.
