2. It is necessary to pay attention to the behavior of the car when driving in a straight line in turns, when accelerating and when braking. Since most serious violations and malfunctions (which cannot be determined when the vehicle is stationary or when starting to move), manifest themselves only during movement. The result of violations in the operation of the transmission may be jerks when the car is moving, and violations in the settings or malfunctions of the chassis are manifested in the form of knocks and deterioration in the controllability of the car.
Car jerks while driving
1. Malfunctions in the fuel system (see chapter «Supply system»).
2. Violation of the ignition system (see chapter «Engine electrical equipment»).
3. Air leakage in the engine intake system. In this case, during the occurrence of jerks, a sharp drop in engine power occurs, the lack of traction (see chapter «Intake and exhaust system»).
4. Violation of the operation of the electronic transmission control system (vehicles with automatic transmission). You need to contact the service station. for system diagnostics.
5. Violation of the electronic engine control system. It is necessary to contact the service station to diagnose the system.
Car jerks when braking
1. In this case, the cause may be warping of the brake (th) disk (-ov) Therefore, it is necessary to contact the service station for repair as soon as possible.
Note:
In most cases, the service station will offer two options for troubleshooting, namely:
- Groove with subsequent grinding of brake discs / brake drums to the repair size.
- Complete brake disc replacement.
The first solution to the problem is less expensive, but there is one significant drawback - the brake pads and the brake disc must be worn in, and this will take a certain period of time, during which small jerks will be felt during braking.
The second option eliminates the disadvantage of the first, but it is more expensive.
2. Poor tightening of wheel bolts/nuts.
3. Ingress of dirt or ice on the brake mechanisms of the car. In the event of freezing, it is necessary, moving at low speed, to press the brake pedal several times to warm up the brake mechanisms.