What causes the car to shake when accelerating from 60 to 80 mph?

[Gwen]

The reasons for the car shaking when accelerating from 60 to 80 mph are as follows: 1. Causes of acceleration shaking: Check if the drive shaft (i.e., half shaft) is loose. You can also perform a test drive to check. The 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. 2. Front body shaking: When the car accelerates from 60 to 80 mph, the front body shakes. It doesn't shake when not pressing the throttle or at other speeds. This is caused by excessive clearance in the front suspension ball joint or connecting components, which creates shaking at a certain frequency. It is necessary to adjust the front toe and front wheel alignment at a repair shop.