What s going on with an abnormal noise in the car?

This kind of abnormal noise generally occurs in the instrument panel or the interior panel of the door and other parts of the plastic parts are more, especially when the vehicle is driving on the uneven road surface, due to the bumps in the road body will produce a certain vibration or slight torsion, so that these plastic parts inside the body will produce resonance noise, or squeeze each other to cause friction noise, generally this kind of abnormal sound.

What pieces have been replaced before the abnormal noise, what parts have been repaired, everyone has their own feelings, many people will misjudge the technical reasons, the abnormal noise itself is not good to judge, to the repair shop when the fault is reproduced, we once had a fault checked for a long time did not find out, and the final result was found because there was a loose part at the connection of the C-pillar behind the car, causing the sound of the frame in the car!

"Abnormal noise" is one of the most difficult faults to eliminate in the car repair industry, and it is difficult to judge the fault location when described and heard. The situation you said should not be a big problem, if it is a problem with the mechanism caused by the abnormal noise, your car will not be able to drive for a long time. It is recommended that you try to run a few more car repair shops, and the possibility of solving it is still very large.

The reasons for the abnormal noise in the car are as follows:The contents of the storage compartment in the car, the contents of the glove compartment, or the sound of the wires of the rear electronic devices tapping. Sometimes this sound is refracted back through the ceiling.

Reason: In this case, pay attention to check the storage compartment, the inside of the bootcase, the sunglasses in the glasses case will also ring, and the wiring of the dash cam installed after is not loose.

Phenomenon that cannot be started:

It may be that the ignition switch is turned on and the engine does not have any signs of starting, the starter rings but cannot turn, the starter can turn but cannot move the engine, or the engine can be driven by the starter but cannot start. Difficulty in starting may be the slow rotation of the engine, or the uneven sound when the engine rotates.

Starting difficulties may occur in freezing weather or very hot weather, or at room temperature, or it may be difficult to start a cold car for the first time, and it may start normally when the car is hot.

These phenomena are related to the poor operation of the main injector, cold start injector, temperature control switch, ECU and control circuit, battery power loss, ignition or pulse generator damage, fuel system does not supply oil or abnormal oil supply and other factors. For automatic transmission cars, failure to start may be due to the wrong position of the transmission handle.

If you hear the abnormal sound of "Zizi" in the process of driving, and this is the abnormal sound caused by the problem of the engine belt, because the abnormal sound of "Zizi" is mostly the aging of each belt group of the engine, or the belt is too loose caused by the problem of the tensioner, the friction abnormal sound, belt slippage, etc., if there is a similar "Zizi" abnormal sound, then look for the major belt groups and tensioners inside the engine, such as engine timing belt, generator belt, circulating water pump belt, air conditioning belt, power pump belt, etc. The problem that causes this abnormal noise is the abnormal sound of the engine belt, which is caused by the smooth grinding surface of the joint surface of the belt and the pulley. It usually occurs when the engine speed changes rapidly, and sometimes the belt rings when the load of the attachment driven by the belt increases.

How to solve the problem of abnormal noise of engine belt.

1. Check whether the accessories driven by the belt are damaged, stuck, loose or the power of the accessories has increased.

2. Replace the belt, or use 100 gauze to polish the joint surface of the pulley and the belt (light grinding is fine).

3. The temporary solution can be to drop 1 2 drops of oil on the joint surface of the belt and the pulley (it will not affect the belt slippage).

If it is the generator belt that rings and the headlights are more obvious, you have to take off the generator belt, turn the motor pulley to see if the generator rotates smoothly, if the generator is normal, you can check whether the battery is not stored power, because the battery storage is not good will increase the load of the generator.

Sometimes a mineral water bottle is super loud when it is placed on the car door, and the key is that you can't hear it in the car... Empty the car first, and find the abnormal noise point first. Both of my cars are noisy, but as long as you find out which one is ringing, it will be easy to solve.

The reasons for the abnormal noise in the car are: 1. The abnormal noise of the door, the structure of the door is relatively simple, it may be that the screws are not tightened; 2. If the car has a sunroof, see if the sunroof has any abnormal noise, the abnormal sound of the sunroof is generally normal, because the car has been driven for many years, the guide rail inside the sunroof will fall with small stones or dust, and if the sealing is not strict for a long time, it will produce abnormal noise; 3. Abnormal noise ** to the chassis, in this case, it is generally recommended to go to the 4S shop for maintenance and inspection; 4. The abnormal sound of the center console is related to the overall workmanship materials of the car; 5. The door lock block has poor contact, clearance or poor lubrication; 6. The door hinges are rusty, and the door sealing strip is aging.

1. The abnormal noise of the door, if it is one of the doors, because the structure of the door is relatively simple, then you have to see if it is because the screws are not tightened.

2. If your car is with a sunroof, then you have to see if the sunroof has any abnormal noise, and the abnormal noise of the sunroof is generally normal, because after driving for many years, the guide rail in the sunroof will fall with hidden pebbles or dust or something, and if the seal is not tight for a long time, it will produce abnormal noise.

This kind of problem is actually not a big problem, generally you have a luxury car like BMW and Mercedes-Benz, and he will also have a sunroof noise.

3. The abnormal sound of the center console, the abnormal sound of the center console is generally related to the overall workmanship and materials of the car. You have to consider whether your car has dismantled the center console before, whether it has installed the navigation cable or something, whether it is still intact when it is installed, or what parts are not assembled?

4. Abnormal noise is on the chassis, or outside the car. In this case, it is generally recommended that you go to the 4S store to find out.