2. It is necessary to pay attention to the behavior of the car when driving straight, on turns, during acceleration and during braking. Since most of the serious violations and malfunctions (which cannot be determined when the vehicle is stationary or when starting to move), manifest themselves only during movement. Transmission problems can result in jerking while driving, while chassis adjustment problems or malfunctions can result in knocking sounds and reduced vehicle handling.
The car jerks while driving
1. Malfunctions in the fuel system (see chapter "Power supply system").
2. Malfunction of the ignition system (see chapter "Engine electrical equipment").
3. Air leak in the engine intake system. In this case, when jerks occur, there is a sharp drop in engine power and a lack of traction (see chapter "Intake and exhaust system").
4. Malfunction of the electronic transmission control system (cars with automatic transmission). You need to contact a service station to diagnose the system.
5. Malfunction of the electronic engine control system. You need to contact a service station to diagnose the system.
The car jerks when braking
1. In this case, the cause may be a warped brake disc. Therefore, it is necessary to contact a service station for repairs as soon as possible.
Note: In most cases, the service station will offer two options for troubleshooting, namely:
- Turning and subsequent grinding of brake discs/brake drums to the repair size.
- Complete replacement of the brake disc.
The first solution is less expensive, but has one significant drawback: the brake pads and brake disc need to be ground in, which takes a certain amount of time, during which time slight jerks will be felt when braking.
The second option eliminates the disadvantage of the first, but it is more expensive.
2. Poor tightening of wheel bolts/nuts.
3. Dirt or ice buildup on the vehicle's brakes. If freezing occurs, it is necessary to press the brake pedal several times while driving at low speed to warm up the brake mechanisms.