What is the troubleshooting method for vehicle deviation during driving?
2 Answers
Vehicle deviation during driving can be troubleshooted by first checking whether the tire pressure of the left and right steering wheels is consistent, whether the bearing clearance and brake clearance are uniform, and inspecting whether the front axle and frame are bent or deformed. Since multiple factors can cause vehicle deviation, it is recommended to visit a 4S shop for troubleshooting. Vehicle deviation refers to the phenomenon where a car, while driving straight on a flat road, spontaneously veers to one side, causing the line connecting the centers of the front and rear axles to not align with the centerline of the driving trajectory. The reasons for vehicle deviation include: 1. Inconsistent braking force on both sides of the vehicle's wheels, especially the steering axle wheels; 2. Uncoordinated movement of the suspension guide rods and steering system tie rods during braking; 3. Improper loading on both sides of the vehicle; 4. Inconsistent road surface adhesion on both sides.
Recently my car keeps pulling to the left, making it unsafe to drive on highways as I have to constantly hold the steering wheel firmly. As an ordinary office worker, I prefer DIY inspections. First, I use a tire pressure gauge to measure all tires, ensuring front and rear pressures match the manufacturer's recommended values (e.g. front 2.2bar, rear 2.3bar). Uneven pressure can cause noticeable pulling. Then I check tire wear patterns using the coin test - uneven tread depth indicates need for rotation or replacement. Next, test the braking system: after parking, feel the wheel hub temperature - excessive heat on one side suggests stuck calipers causing pulling. If that's not the issue, consider wheel alignment requiring professional equipment for adjustment. Suspension problems like leaking shocks or loose control arms also affect tracking - these require jacking up the car to check clearances. For prevention, I check tire pressure monthly and avoid potholes at speed to save hassle and money. Safety-wise, pulling is especially dangerous on wet roads - address any issues immediately without delay.
