At the speed of vibration on the body. Computer diagnostics of a car

After some time, various types of malfunctions may appear in any type of vehicle. Among them, there may be a strong vibration of the body or individual machine systems. In order to identify these problems, it is required to determine under what conditions they are manifested: when driving a car or parking with a motor, after any repairs or as a result of prolonged operation. Vibration problems cause discomfort to the driver and are dangerous for technology. There is a possibility of occurrence of emergency consequences if in time to not be engaged in elimination of such problem. When the fastening components are in a weakened or unfit state, irreversible deplorable consequences are possible.

Steering Vibration

The steering system often has such defects. When slightly shaken, many motorists do not attach importance to this, but over time, the vibrations will be much stronger. And it can turn into a breakdown or failure of the steering.

With these faults, the following operations are required:

• Check the balancing of the wheels (if the wheels are not balanced, this causes a shaking in the steering gear). This operation is not too costly, but the effect is significant.
• Carry out inspection of the bearing racks.
• Check the condition of the ball joints.
• Perform an inspection of the component parts of the steering system (tips, rods, trapezium).

Vibration of the engine on the idle ones is transmitted to the body

This type of shaking can be detected when parking with a wound engine. He is also on the list of puzzles for motorists. In this case it is necessary to check the reliability of the power plant fasteners, the fuel system and the operation of the exhaust manifolds using special diagnostic equipment. There is in many cases unsatisfactory work of the cylinders. The ignition timing angle is incorrectly set , the air / fuel mixture does not meet the requirements of the correct engine operation. This is a short list of indicators of breakdowns. When not all cylinders work, it is possible to hear and feel vibrations, even without proper knowledge in the technical field. The reason is that there is no ignition of the fuel mixture. The candle could just pour or it failed.

Detection of a cylinder that is not working

If you know the device of motors, you can find out with the engine running which of the cylinders is inoperative by alternately disconnecting the power cable with the cradle from the candle. If the operation of the power plant does not change with some kind of power disconnection, then the candle is in an inoperative state. This will be a precondition, when the vibration of the engine can appear on the idle ones (it is not transmitted to the body at speed). Uneven work of the cylinders leads to an incorrect load on the crankshaft, and the motor will walk from one side to the other, significantly increasing the wear of the parts. Unburnt fuel will remove the lubricant from the walls and lead to coking.

When one of the motor mounts is loosened, then depressing the accelerator pedal will cause it to tilt towards the bad fastening. If the pedal is released, the unit will return to the normal position. Do not trust the opinion when shaking occurs at the rear of the machine, that the entire gearbox needs to be replaced. He is the cause in a minority of cases. A slight shaking may be provided by the radiator fan with axial or radial backlash.

Shaking the body parts while moving

In conditions where there is a vibration at a speed of 80 km / h or during acceleration, it is necessary to perform a transmission check. You will need to do this:

• Carry out a level control of the lubricant in the gearbox.
• Inspect the hinge, the lubrication of the propshaft, the gearbox flange.
• At noise and shaking in a place of placing of the back bridge it is required to check up working capacity of a reducer and semiaxes. In most cases, the problem is the wear of the gear train on the semi-axles.
• Initiate the replacement of the filter elements of the transmission lubrication system.
• Make a check of all the nodes transmitting torque to the propellers, for the appearance of various gaps in the joints. When there are backlashes in the mating of moving parts, there will be a vibration at the speed of the body.
• Perform visual control of the wear of the suspension components, brake discs and drums.

For models of foreign production, there is a need for passing the verification procedure for specialists with the latest diagnostic equipment in circulation. Even engines that do not have breakdowns, slightly vibrate, but such minor shaking absorb pillows and shock absorbers. It is inadmissible when parts of the motor have contact directly with the frame.

Negative factors of body shake

There is a need to immediately respond to the occurrence of vibration manifestations. From this, the working capacity of the entire construction of machinery can depend. In addition, if you do not take measures, there can be additional breakdowns:

• There are a variety of cracks body elements, affecting the rigidity of the body.
• Arbitrary weakening of all types of fastenings. This will adversely affect the operation of the units, a lot of other defects will necessarily appear and the wear of the components will increase.
• On the torpedo sensors may become unusable or they will display incorrect data.

All this leads to the inconvenience of movement and the danger of accidental consequences. It is necessary to pay due attention to the technical condition of the units and take measures aimed at troubleshooting.

Detection of minor vibrations

Drivers perceive vibrational manifestations in different ways, and it's not easy to notice the beginning of a malfunction. When it is difficult to notice small shaking, you need to look at the side mirrors of the review. When driving at speed, vibration on the body can be insensible, but the image will be blurred. Also, you can put some small objects on the torpedo. When vibrating, their movement will be noticeable. The steering wheel can serve as an indicator of a small impact, felt by touching your fingers. Such simple operations will help to identify the signs of the problem.

Adjustment of fuel system components

Cars of the carburettor type from the Zhiguli family quite often have problems with the fuel system. Vibration (VAZ-2110 is no exception) can occur due to the fault of the incorrectly adjusted carburetor.

The fuel-air mixture prepared by him, for the normal functioning of the power plant, should provide work without claps, interruptions and jerks. If the smoke coming from the exhaust pipe is black, then the fuel in the cylinders does not have time to burn and just flies into the pipe. If very light smoke, then there is little fuel in the mixture. In such cases, it is necessary to remove the carburetor, disassemble the elements and rinse.

Without removal it is possible to clean it and jets by spraying a special cleaner for cleaning inside. Adjust the carburettors by turning the jets to the desired value. The petrol pump will also need to be checked and the gaskets in the matings of these parts changed. At a speed, body vibration can occur due to these defects.

Breakage and regulation of the starting system

This system includes problems with ignition. If it is set incorrectly, then there will be problems in the operation of the motor and its start-up. It is necessary to adjust the advance angle by affecting the trampler and adjust the nominal mode by ear. Or experts can put the ignition with the help of instruments. But for this you have to spend. In the case of installing non-working ignition parameters, the cylinders will start working intermittently or the engine will stop starting at all. Vibration of the body will inevitably be present when driving.

Conducting adjustment operations of the timing

The gas distributing mechanism consists of a distributing cam shaft and a decompression mechanism consisting of a valve system with rockers and pushers. These nodes are responsible for the timely supply of fuel and the removal of waste gases from the cylinder. The camshaft receives a drive from the crankshaft through a chain drive, the tension of which should be within the recommended range.

When this complex does not work correctly, parking vibration and body vibration will occur. For good functioning of the motor, it is necessary to periodically adjust the intake and exhaust valves. This can be done in the workshops or independently. In order to customize the gaps, you need to know about their devices and work. In these operations, adjust the valves for each cylinder separately, measuring the probe, and manually turn the crankshaft to a certain degree before the valve operates. For stable and stable operation of the power plant, it is necessary that the correctness of the adjustments and the timely elimination of faults are guaranteed.

Computer diagnostics of vibration indicators

There are certified stations equipped with the latest equipment, which allows to diagnose all the car systems in different conditions and to understand why there is a vibration at body speed. Various stands are capable of carrying out loads on the engine, undercarriage, suspension, transmission corresponding to real movement. This makes it possible to collect a set of data on the operation of all systems, to analyze them.

After the necessary tests, specialists will set the necessary parameters and make the necessary adjustments for stable operation of the units at favorable nominal conditions.

What is the cost of such services?

Diagnostic operations will cost in the range of 2500-3500 rubles. The price may depend on the manufacturer and model of the car.

It is possible to obtain valuable information on the correct operation and maintenance of the vehicle. After such manipulations it will be possible to forget about the cases when there is a vibration at the speed of the body.