Why does a car stink when the air conditioner is turned on?
Why does a car stink when the air conditioner is turned on? Nowadays, every family has a car, and driving has become more and more common. It is the best choice for more and more people, but when driving on the road in summer, it is inevitable to encounter the phenomenon of high temperature in the car. Let’s share why the car smells when the air conditioner is turned on. What happens when the car smells when the air conditioner is turned on1
1. The smell of car heater may be caused by dirty or moldy ventilation ducts. After the car air-conditioning system uses the refrigeration function, water droplets will often be produced in the air-conditioning ventilation ducts. Over time, dust and other substances will accumulate and cause mold. The treatment method is to clean and disinfect the ventilation ducts.
2. If the odor of the car heater is gasoline, it may be caused by a leaking carbon canister. The carbon canister collects the evaporated fuel in the engine body to prevent the fuel from leaking in the form of gas. Leaked fuel can jump into the air conditioning system and then into the car. The solution is to replace the carbon canister and at the same time check the air conditioning system ventilation duct for cracks.
3. The smell of car heater may be caused by the heat exchanger of the air-conditioning heater system being dirty or moldy. The engine coolant temperature needs to enter the car through the heat exchanger. If the heat exchanger has odor, it will jump into the car. The solution is to clean the heat exchanger or replace it with a new one. Why does the car smell bad when the air conditioner is turned on? 2
Six tips for removing odor from new cars:
The first tip: Ventilation and odor removal method
Experts point out, Within six months of buying a new car or for a period of time after it is decorated, you should develop the habit of driving with the windows moderately open to maintain the circulation and convection of fresh air in the car.
The second trick: charcoal deodorization method
Wrap the purchased black charcoal with clean, breathable gauze, and then put it in the trunk of the car. Can absorb odors present in the car.
The third method: Fruit deodorization method
You can place lemon or pineapple and cut the lemon or pineapple in half, so that its fruity aroma will evaporate well and resist the car interior odor.
The fourth trick: Photocatalyst deodorization method
Photocatalyst is a photocatalyst developed using nanotechnology and is specially used to control indoor air environmental pollution. After surface oxidation reaction, various harmful substances are decomposed into water and carbon dioxide. The photocatalyst has the advantages of strong purification ability, stable effect, no secondary pollution and low maintenance cost.
The fifth trick: Deodorizing method with negative ion air purifier
Buy a negative ion air purifier, which costs about 300 yuan, and it can remove the odor in the car. , allowing drivers to breathe fresh air.
The sixth trick: Vinegar deodorization method
When you are not using the car, get a small bucket of water, add some vinegar, and put it in the car. The water can absorb formaldehyde. Vinegar can stabilize formaldehyde. Why does the car smell bad when the air conditioner is turned on? 3
Identify "problems" with your car in a timely manner.
Burnt smell
If there is a burnt smell from plastic products in the car, it is mostly caused by overheating of the electrical circuits. However, burnt wires are usually accompanied by local smoke or local heating. Careful inspection will definitely find the source.
If you smell a special smell of burning non-metallic materials while driving, it is usually because the clutch friction plate is burned or overheated. If the clutch is used normally, there is no obvious difficulty in shifting gears or starting, and the smell you smell when getting out of the car does not come from the front of the car, but from the rear, then you should check the rear brake system to see if there is any problem. Overheated.
Mixed oil smell
Be careful if you smell mixed oil smell. Since the ignition points of engine oil and gasoline are different, what we commonly call "blue smoke" will appear, which is abnormal.
In addition, engines with severely worn valves may also burn oil. There are also aging and leaking oil pipes in some vehicles, which may cause oil to drip onto the engine or exhaust pipe. The oil smell emitted at this time may also cause a fire. The car needs to be taken to a repair shop immediately for inspection.
Smell of raw oil
If you always smell the smell of unburned gasoline while driving, commonly known as "smell of raw oil", you must detect it as soon as possible Only after confirming the location and severity of the oil leak can you go back on the road.
After a vehicle has been used for a long time, the fuel pipeline may be aged and cracked. At this time, as long as there is a slight bump or the pressure in the pipeline changes, fuel may leak out from these parts. Therefore, when you smell an unusual smell of gasoline, you should immediately extinguish open flames such as cigarettes in the car. In addition, if the fuel tank has been accidentally hit (such as dragging the bottom), unburned gasoline may leak. You can chew it. Used chewing gum blocked the oil leak. Why does the car smell bad when the air conditioner is turned on 4
Car maintenance taboos
1. Avoid running the engine for a long time in an unventilated garage
Engine exhaust The exhaust gas contains carbon monoxide, which is a poisonous gas that cannot be seen or smelled. Being exposed to low concentrations of carbon monoxide gas for a long time can cause symptoms such as headache, shortness of breath, nausea and vomiting, physical weakness and dizziness, psychological confusion and even brain damage. If you start the engine in the garage, you should open the garage door or turn on the exhaust device so that exhaust gas can be discharged from the garage at any time. Even if you are working in the open air, do not stay near the exhaust pipe of a working engine for a long time.
2. Avoid using your mouth to suck fuel pipes
Gasoline is not only flammable and explosive, but also poisonous. Leaded gasoline, in particular, can damage the nervous system, digestive tract and kidneys. Shitai Lexus 4S Store In addition, gasoline also contains high concentrations of sulfide. Since hydrogen sulfide is also toxic to a certain extent, if the gasoline is inhaled, it will cause poisoning or death. In case of inhalation, you should force yourself to vomit and go to the hospital for treatment in time.
3. Avoid getting carburetor cleaning agent on it.
Most carburetor cleaners contain methyl chloride, aromatics and ethanol. These substances have certain toxicity, so these substances are inhaled into the nose or splashed on the skin and eyes. It's all very dangerous.
4. Avoid mechanical damage.
Car maintenance is related to various aspects. When performing maintenance operations, Shiter Lexus should set up obvious work signs to prevent other people from being hurt by misoperation. When starting the car, pay attention to the gear position of the transmission to prevent the car from accidentally moving and injuring people. When working under the engine hood, other people should be allowed to leave the cab to prevent accidental injuries from sudden rotation of the engine or movement of other people's control mechanisms.
Star Lexus 4S Store If it is necessary to work under the car, clear signs should be set up and the car should be covered with wood. When using a jack to support the vehicle, the jack should be placed steadily. Driving tools (driving stools) should be prepared before driving. Bricks and other fragile objects are prohibited. When installing the assembly, never test screw holes, lock holes, etc. with your hands to avoid breaking your fingers. When testing the engine, no work is allowed under the vehicle.
5. Avoid fire
When maintaining your car, you often need to use flammable and explosive items such as oil and cleaning agents. At this time, do not forget to take fire-fighting measures and prepare them. Fire extinguisher, just in case. Site Lexus Do not smoke near the fuel tank and battery, because the flammable gas escaping from the fuel tank and the hydrogen gas escaping from the battery can easily ignite.
6. Avoid burns
For an engine that has just stalled, since the temperatures of various engine components (water tank, exhaust pipe, power steering fluid tank, spark plug, etc.) are relatively high, care must be taken contact to prevent burns. Site Lexus Repair If the engine temperature is high, never remove the water tank cap or release the water drain switch to prevent burns.
7. Avoid damaging the car.
Brake fluid has a damaging effect on the car's paint film (including the paint film of leather shoes), and it can dissolve the paint film quickly. Brake fluid is harmful to the eyes. If it splashes into the eyes, they must be rinsed with clean water immediately.
8. Do not pay attention to the protection of rotating parts and car road tests
When the engine is running, be sure to keep hands, clothing and tools away from the rotating fan and fan drive belt (most importantly It is best to remove the rings, watches, ties and other items worn). When testing the car, the condition of each part of the car should ensure safe parking and effective steering. Cars undergoing road tests must have obvious test signs. When testing, personnel must ride safely and conduct it on a dedicated test track.
9. Don’t pay attention to the cleaning of the workplace
When closing the engine cover or other assembly covers, you should check whether tools, rags, removed parts and other items have been forgotten. Only after confirmation is correct can it be closed.