Today we are here to talk about the annual inspection again. When it comes to the annual inspection, it is estimated that many car owners will slap the table again. Because in the eyes of many people, the annual inspection of motor vehicles is tantamount to "torture" for their cars. Not only do car owners feel distressed, some cars are fine when driven normally, but after the annual inspection, all kinds of problems appear. Therefore, the saying "annual inspection will destroy the car" has gradually spread.
But does the annual inspection really ruin the car? Not necessarily. So why do some cars always have problems after annual inspection? Let’s talk about this topic today.
1. Normal "faults"
Some problems are not considered "faults", but special annual inspection operations that cause the car's computer system to detect abnormalities, resulting in "false reporting of military information."
The most common thing is that the ABS fault light suddenly lights up after the annual inspection, and even the ESP fault light of some cars also lights up. This is usually a problem during exhaust gas detection.
Because some cars have to put the driving wheel on the roller when detecting exhaust gas. During the detection process, the driving wheel rotates at a high speed, while the driven wheel does not move. The ABS control system must have panicked: Why are the front wheels turning so fast, but the rear wheel sensors have no signal at all? Is this a big deal? So I will quickly turn on the fault light for you. At the same time, the functions of ABS and ESP will also be restricted and cannot be started. Because the computer does not dare to rashly interfere with the braking when it cannot judge the wheel speed, the manufacturer will be held responsible if something unexpected happens.
What should we do if this happens? The first thing to do is to tell the staff at the inspection station to let them know there is something wrong with the car. Even if we know the reason, we still have to say it is to fully protect our rights and interests.
Then you immediately turn off the engine, restart the engine, and then drive the car for a few laps at the inspection station. Generally, after restarting, the ABS system will perform self-test again. When the wheel speed sensor signals of the four wheels are detected to return to normal, the fault light will disappear. At this time we can leave directly. If the light is still on, there may be something really wrong, and you need to contact the testing station.
2, real faults
There are also many cases where real faults occur during the annual inspection. These are real problems, and you must find an explanation from the testing station. For example, when some cars are inspected, the engine cylinder explodes, the coolant pipe leaks, and the engine reaches high temperature. These are all possible occurrences. There are two reasons why the car has these serious faults during inspection.
On the one hand, the inspector did not conduct the inspection according to the prescribed procedures or standards.
For example, when measuring exhaust gas, there was no cooling fan placed on the front of the car, which resulted in some cars experiencing high temperatures during the test. For example, when using the dual-idle method to measure exhaust gas, the engine speed may be set too high during the warm-up phase, causing accidental damage to the engine. This is possible.
However, there are also some situations that are caused by the operator, but the operator does not have subjective malice. For example, I once helped a relative to inspect the car, and the handbrake cable was broken. This is related to the detection method. At that time, a flat-panel detection platform was used. During the detection, the car was first driven on the flat-bed, and then the handbrake was pulled hard. Since this inspection station is newly opened, the inspectors work hard to attract business, in order to increase the pass rate as much as possible and reduce some troubles for car owners. My handbrake failed the first time. During the second inspection, the inspector used all his strength to break the handbrake cable. To be honest, I can't blame others.
On the other hand, the car itself has some minor problems, but the intensity of daily use of the car is low, so it can barely support it without causing problems. During the annual inspection, the work intensity of the car increases significantly, and problems are likely to occur at this time.
For example, the radiator of some cars is too dirty and the heat dissipation effect is not good, but they usually commute to and from get off work, and the engine does not generate much heat, so there is no problem. However, when the engine load increases during testing, the heat dissipation will easily not be able to keep up, and it will naturally become prone to high temperatures. For example, the exhaust pipe suspension rubber sleeve of some cars has aged. During the inspection, the engine vibrated violently at high speeds. As a result, the rubber sleeve ruptured and the exhaust pipe may fall directly.
I once drove my brother's old Fukang to check the car. When I tested the brakes, the fog lights were knocked off because the brakes were too strong. Who would dare to believe this?
Generally speaking, the car inspection itself will not cause damage to the car, but as the age of the car increases, the car will inevitably experience aging or hidden diseases in some parts. At this time, high-intensity inspection will inevitably expose some potential problems of the vehicle. Although the car appears to be damaged on the surface, on the other hand it can be regarded as a thorough troubleshooting of the car.
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