What causes the car to shake when accelerating from 60 to 80 mph?
2 Answers
The reasons for the car shaking when accelerating from 60 to 80 mph are as follows: Loose drive shaft: Check if the drive shaft (i.e., the half shaft) is loose. You can also perform a test drive to inspect. The inspection method is to release the throttle and shift to neutral at 80 mph. If it doesn't shake, it's a half shaft issue. If it still shakes, perform a four-wheel dynamic balance check to see if there is water inside the tires. Excessive gap in suspension ball joints or connecting components: When the car accelerates from 60 to 80 mph, the front body shakes, but it doesn't shake when not pressing the throttle or at other speeds. This is caused by excessive gaps in the front suspension ball joints or connecting components, which create shaking at a certain frequency. It is necessary to go to a repair shop to adjust the toe-in and front wheel alignment.
My car starts shaking when accelerating between 60 to 80 kilometers per hour, and it feels like the whole body is wobbling. This is a pretty common issue. I remember last time I encountered this, the main cause was improper tire balancing – uneven tire wear or deformed rims can cause shaking at specific speed ranges. Additionally, if the driveshaft joint is aged or worn, uneven power transmission can also cause vibrations; and if the spark plugs are worn or the ignition coil is faulty, incomplete combustion can lead to unstable power. Don’t delay—inspection costs are usually low. First, take it to a shop to check the tires and drivetrain, otherwise, severe shaking can affect handling and become dangerous on highways. Regular tire maintenance, such as checking pressure and wear, can prevent many issues.
