【The owner's family car knowledge】I remember reading in the newspaper before, it’s better to turn off the air conditioner and then the engine before parking, otherwise it will be bad for the car. I went for maintenance last week and asked the master who repaired the car by the way, but the master told me not to be so careful. The weather is hot recently, and I often forget to turn off the air conditioner before turning off the flame. Does this harm the car?"
Putting it on the car, some driving behaviors may cause minor damage to some parts of the car, and accumulate over time, which may accelerate the wear of the parts and shorten the service life. For example, some people can use the battery for 3 years or more, and some car owners need to change it in less than two years-choosing the correct method of use is still very important.
Starting with air conditioner damages the engine
Regarding the question mentioned by Ms. Lu at the beginning, the reporter consulted many technical experts. The experts suggested that it is best to turn off the air conditioner one or two minutes before turning off the flame. The important thing is that if you turn off the air conditioner without turning off, the next time the vehicle starts, the engine will start with the load of the air conditioner. The correct approach is to turn on the air conditioner after starting the vehicle for two or three minutes and the engine is lubricated.
In addition, if there is a traffic jam, waiting for people, and the engine is idling for a long time, it is best to turn off the air conditioner for a while, which can not only reduce the burden on the engine, but also effectively save fuel.
Damage to the gearbox due to coasting in neutral
Owners of manual transmissions, especially taxi masters, like to taxi in neutral gear. Although there are safety hazards, many people are accustomed to doing so because of fuel economy.
For automatic transmission cars, coasting in neutral gear is even more harmful but not beneficial: current family cars are basically electronic injection engines. After the engine speed is above 1,000 rpm and the throttle is released, the engine will automatically stop fueling-if Your car has an instant fuel consumption meter, you can clearly see that the fuel consumption at this time is zero. When the automatic gear is coasting in neutral gear, because the driving speed is different from the engine speed, insufficient oil pressure in the hydraulic line of the gearbox is prone to increase friction, damage the friction lining inside the automatic gearbox, and eventually cause the gearbox to fail.
Therefore, car owners who are accustomed to manual transmission, if they use previous experience to drive automatic transmission, be careful not to pay the price.
Uneven parking space damages the frame
On the side of the road, it is often seen that half of the wheels of some cars are parked on the curb. Long-term parking in this way will cause the four-wheel drop to be too large, cause distortion to the frame, and even affect the closing of the door. Long-term parking on uneven ground can also cause similar consequences.
In addition, the wheel does not return to the right after parking, it is also very harmful to the car: it will damage the steering wheel and the dust cover, and affect the steering system.
Don’t step on the brakes and put in gear and damage the transmission
In a manual transmission car, if the clutch is not stepped on to the end, forcibly shifting into gear will damage the transmission. Will automatic transmission cars have similar problems?
Experts say that a car with automatic transmission can push the gear into P gear by half-stepping on the brakes and the brake lights are on. If the brakes are not stepped on and pushed directly to the P gear to stall, the vehicle will move a little when the road is uneven, which will cause an impact on the transmission gear. If things go on like this, it will definitely not be good for the vehicle.
Kill the direction and destroy the direction machine
The reporter also has the problem of driving the direction to death: When he first learned to drive, Yiku was in a hurry, and only when he drove the direction to death, he dared to slowly loosen the clutch to let the vehicle move. Experts remind that frequently hitting the steering wheel will cause the car's steering pump to be worn down. If it takes a long time, it will aggravate the aging of the booster pump belt, and the power-assisted pump will break down, which will also affect the steering gear.
If you have to kill the direction, the correct way is to go back a little immediately after the direction is killed to avoid damage to the direction machine.
The brake pad of the handbrake is damaged after parking for a long time
A car owner called for help one morning, but the right rear wheel stopped turning. Pulled to the 4S shop to disassemble the wheel and check, the brake pads are stuck! Asked carefully, the owner was on a business trip for half a month. It was raining heavily before the business trip, and the handbrake was pulled when parking. The brake pads got stuck when I came back from a business trip.
The staff of the 4S shop said that it’s best to level the ground when parking for a long time with automatic transmissions. Don't worry, you can find stones before and after the wheels to cushion them.
Often forget to turn off the light and damage the battery
A service manager of a 4S shop once told a story as a joke: a car owner has asked the 4S shop for emergency assistance 4 times after buying a car for less than a year, all because of one reason-no electricity. The owner of Madaha always forgot to turn off the headlights when he stopped the car at night, and the car could not start the next day, so he had to ask a 4S shop for help.
If the battery is exhausted and the car cannot be started, a car owner with strong hands-on ability can "borrow electricity" from a nearby car that can start normally and just get off the line. Those who don't have this hands-on ability can only ask for help from a 4S shop or auto repair shop. It doesn't matter if the battery is consumed occasionally. The battery will be charged during the normal driving of the vehicle. It should be noted that after the battery is exhausted, it will take a relatively long time to be fully charged, generally for more than 1 hour of continuous driving. If you usually drive a short distance, in the event of a power loss, it is best to use a charger for more than 10 hours.
After stopping, remember to pay attention to whether the reading lights in the car and the headlights outside the car are turned off. The car's battery is a storage battery, and the capacity is often insufficient, which will affect the service life.
Forgetting to turn off the wiper, damage the front glass and burn the motor
The wiper motor burns out every winter in many 4S stores: it rained and snowed the day before, and the wiper was turned on when driving, and sometimes it was adjusted to the maximum gear. When the car was started the next morning, the wiper was frozen, causing the wiper motor to burn out.
Although there are not many freezing weather in Hangzhou, you should pay attention to this: if the next startup is already sunny, a layer of dust and sand will inevitably accumulate on the front block. Frequent dry scraping will cause damage to the wiper rubber and even scratch the front windshield. .
Randomly pressing the switch affects the electrical system
Sometimes, the car owner will have some subconscious actions. For example, the car window glass has been raised and lowered to the end, and the car owner continues to press the lift switch; the wiper water has bottomed out and no water can be sprayed. The car owner still does not give up, continue Press the sprinkler switch on the ground, hoping to squeeze out some water-these behaviors will seriously affect the service life of the electrical system, and even burn it on the spot.
Scorching sun, car wash, paint, tire
There was a car owner, and the paint on the body of the new car was a little cracked after only half a year. The car owner found a 4S shop and determined that it was a problem with the car's quality. Since the same batch of trains has never encountered a similar situation, the technical director asked in detail and found that it was related to the car owner’s car habit: there was a car wash shop at the intersection of his home, and the car was used in summer. First send the hot car to be washed. "A hot car body is often washed with cold water, which is very harmful to the paint of the car body. If the car has just passed the high speed, go to the car wash, and it may even damage the tires."
Over-polished car paint aging
Last week, the reporter interviewed in a 4S shop. A car owner came over and asked the technical director to polish his car. The technical director looked at him embarrassedly: "Your car was only tossed last month. It's still so bright. It's just a matter of washing and waxing." But the owner said that he is in business, from hair to leather shoes to his car. , Have to clean up and appear in front of customers.
The technical director reluctantly gave an example: human skin can be regenerated, and regular use of scrub facial cleanser can also cause harm. After all, car paint is not recyclable. After being polished once or twice, the car paint layer that is not thick will become thinner and thinner, and its self-protection ability will become worse and worse, which will eventually lead to irreversible aging. Therefore, unless it is a last resort, polishing should not be done or done as little as possible, and after one polishing, careful maintenance is required.
The fuel pump is short-lived when the fuel tank is bottomed
There are always lazy drivers who like to wait for the fuel warning light to turn on before looking for gas stations everywhere. However, the fuel pumps of electronic fuel injection vehicles rely on the fuel itself for cooling. If the fuel level is too low, the fuel pump is very likely to overheat or even burn out. If things go on like this, the life of your car’s oil pump may be greatly reduced.
Experts suggest that car owners should refuel before the last quarter of the scale is displayed on the fuel gauge to ensure that the fuel pump is sufficiently cooled, thereby prolonging its service life.
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