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Combination Switches

The combination switch is installed on the steering column sheath of the vehicle, and generally has two handles. It is mainly used to control the light functions, including the turn signal and the wiper function. It is a switch that is frequently operated in the vehicle switch system. Its light/wiper function generally sends the signal to the BCM through the LIN or CAN bus, then the BCM judges and processes the signal, and then sends the signal to the actuator to realize the relevant functions.

 Key Features of Combination Switches

 Play the corresponding role of power switch equipment to start and close.

 The handles are installed on the steering column and can be controlled on the left and right sides, which is convenient for the driver to use and operate.

 Different functions can be switched and turned on and off.

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With anti-interference ability.

 How To Test Combination Switches?

 If you are having trouble operating the turn signals, headlights, or wipers, you may need to replace the combination switch assembly. Combination switches are electronic switch assemblies that control various vehicle functions. It is most commonly used to control turn signals, high and low beams, and wipers. It is usually mounted on the left side of the steering column for easy operation by the driver. Since the combination switch controls several functions that are important to the safe operation of the vehicle, when it goes wrong, some functions may be disabled, which may affect safety. Often, a bad or malfunctioning combination switch produces symptoms that can alert the driver to a potential problem that requires repair.

 1. The problem of operating the turn signals

 One of the first symptoms of problems with the combination switch assembly is operating the turn signals. Turn signals are the most commonly used parts in combination switches and therefore wear out the fastest. If the mechanism or electrical contacts that activate the turn signal light wear out, this can cause problems with the turn signals. Worn contacts can cause the turn signal lever to work intermittently, or not work at all.

 2. Headlight operation problem

 Another symptom of a potential problem with a combination switch is operating the headlights. For vehicles with a combination switch built into the headlight switch, if the switch is worn or damaged, it can cause problems with the headlights. A broken switch can cause the headlights to only work at certain settings, or not turn them on at all.

 3. Wiper operation problem

 Wiper operation issues are another issue often associated with poor combination switches. If the lever or knob that operates the wiper is broken or worn, the wiper will not actuate properly. Depending on the exact problem, the wipers may work intermittently, only on certain settings, or not work at all.

 The combination switch controls several functions that are important to the safe operation of the vehicle. Therefore, if your vehicle exhibits any of the above symptoms, have the vehicle inspected by a professional technician. They will be able to determine if your car needs replacement of the combination switch assembly.

 https://www.mayautopart.com/products/combination-switches/

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Car Water Pumps

The engine drives the water pump bearing and impeller to rotate through the belt pulley. The coolant in the water pump is driven by the impeller to rotate together. Under the action of centrifugal force, it is thrown to the edge of the water pump shell, generates a certain pressure, and then flows out of the water outlet or water pipe. The pressure at the center of the impeller decreases because the coolant is thrown out. The coolant in the radiator is sucked into the impeller through the water pipe under the action of the pressure difference between the inlet of the water pump and the center of the impeller to realize the reciprocating circulation of the coolant.

 By advanced testing methods and theories, MAPMS repeatedly tests the reliability, durability, roughness, hardness, size and surface compositions of the water pump and its parts to achieve the best performance.

 Car Water Pumps Features

 Fast self-priming and strong suction.

 With acid resistance, alkali resistance, corrosion resistance and other properties.

 Maintain a stable coolant circulation flow.

 Large flow, high pressure, stable performance, easy installation.

 With characteristics of corrosion resistance, small deformation, strong fire resistance and long service life.

 What Are the Symptoms of a Bad Water Pumps?

 The water pump plays a key role to keep engine safe. When there is a problem with the water pump, it will affect the normal operation of the cooling system and then damage the engine.

 If the water pump is damaged, there will be the following symptoms.

   Idle Speed Problem

 The automotive water pump is connected with the belt to pump cold coolant from the radiator to cool the engine. If there is a problem with the rotation of the water pump, it will directly affect the speed of the engine.

 Coolant Leakage

 This situation is mainly caused by the aging of the water pump sealing ring. Too tight engine combination belt will also lead to premature wear of the water pump. Moreover, the antifreeze is not replaced for a long time, the internal corrosion will eventually cause damage to the water pump. Lastly, still not replace the water pump for a long time when the water pump reaches its service life.

 Noise from the Engine

 Open the engine cover and start the engine. If there is a low friction noise, the water pump bearing may be damaged.

 https://www.mayautopart.com/products/car-water-pumps/

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Car Radiators

Automotive radiator is a heat exchanger, which plays the role of cooling coolant in the automotive cooling cycle. Coolant flows in the radiator core and air passes outside the radiator core. The hot coolant get cold by radiating heat into the air, and the cold air warms up by absorbing the heat from the coolant.

 Its pipe and heat sink are mostly made of aluminum and aluminum pipe is made into a flat shape, heat sink is corrugated, with good heat dissipation performance. The installation direction is perpendicular to the direction of airflow, so as to meet the requirements of small wind resistance and achieve efficient cooling.

 Car Radiators Features

 With characteristics of good thermal conductivity and heat dissipation performance, light weight and high strength.

 Even can be produced to different shapes and specifications according to the heat dissipation requirements of customers.

 What Are the Symptoms of a Bad Radiators?

 The phenomenon that the automotive broken radiator has coolant blockage or leakage, resulting in poor engine heat dissipation and high coolant temperature, which may cause engine overheating and boiling, then engine fault light on and so on.

 The radiator can be inspected and maintained in the following aspects.

 Check Up

 Check the radiator upper and lower chambers and core, and there shall be no leakage.

 In order to facilitate the air to flow through the radiator for heat exchange, flush the radiator core with water to remove the dust on its surface. If the core is embedded with sundries, it can be cleaned with fine steel wire. If the radiator fins are lodging, they should be corrected.

 The radiator frame shall not be broken and firmly welded. Proper distance shall be kept between radiator and fan blade.

 Repair or Replace

  During engine working, if the radiator outlet pipe is found to be sucked and shriveled, it indicates that the air inlet valve of the radiator cap is damaged, and the cap should be repaired or replaced.

 Check whether the connecting pipe of the expansion tank has air leakage or blockage. If air leakage or blockage is found, it shall be eliminated to prevent the coolant of the expansion tank from returning to the radiator.

 Check whether the inlet and outlet hoses are aging and whether the joint clamp is leaking. If the hose is aged and there is leakage at the hose joint clamp, tighten the clamp or replace it.

 Operation Temperature

 After the vehicle stop, check the working temperature of the radiator. Under normal situation, the upper and lower temperatures should change evenly. If half is cool and half is hot, there should be blockage in the radiator. In order to eliminate the blockage, the radiator can be connected to the high-pressure water pipe and washed in reverse. If the blockage is serious, a small amount of cleaning agent can be used.

 The Automotive Aluminum Radiator Manufactured and Supplied by MAPMS with Some Advantages

With characteristics of good thermal conductivity and heat dissipation performance, lightweight and high strength. Even can be produced in different shapes and specifications according to the heat dissipation requirements of customers.

 With characteristics of corrosion resistance, small deformation, strong fire resistance and long service life.

 After special process treatment, the surface is resistant to acid and alkali erosion and free from air pollution, which can maintain its inherent color and luster for a long time.

 Convenient maintenance and low cost.

 https://www.mayautopart.com/products/car-radiators/

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Car Ignition Parts

The Automotive Ignition System is generating enough strong sparks to ignite the combustible fuel-gas mixture.

 The requirements for the Ignition System,

 It is required to generate enough voltage to break through the spark plug gap. That means the required voltage when the spark plug electrode breaks down to generate a spark is called the breakdown voltage. Then the secondary voltage generated by the ignition system must be higher than the breakdown voltage to make the spark plug spark.

 The spark should have enough energy. To make sure reliable ignition, the high-energy electronic ignition system should generally have a spark energy of 80-100mJ, and the spark energy should be higher than 100mJ when starting.

 The ignition timing should be adapted to the working conditions of the engine. First of all, the ignition system should be ignited in accordance with the working sequence of the engine. Secondly, the ignition must be carried out at the most favorable moment.

 How Does The Car Ignition Parts Work?

  The mainly working principle of the automobile ignition system is ignition coils and spark plugs.

 An ignition coil can generate a high voltage enough to ignite a spark between the spark plug electrodes. Both the primary coil and the secondary coil surround the iron core. The number of turns of the secondary coil is approximately 100 times that of the primary coil. One end of the primary coil is connected to the igniter, and one end of the secondary coil is connected to the spark plug. The other end of each of the two coils is connected to the battery.

 When the engine is running, according to the ignition timing signal (IGT) output by the engine ECU, the battery current flows to the primary coil through the igniter. As a result, magnetic lines of force are generated around the coil, which contains a magnetic core in the center.

 When the engine continues to run, the igniter quickly stops the current flowing to the primary coil according to the ignition timing signal (IGT) output by the engine electronic control unit (ECU). As a result, the magnetic flux of the primary coil begins to decrease. Therefore, the self-inductance of the primary coil and the mutual inductance of the secondary coil generates an electromotive force (EMF) in a direction that prevents the existing magnetic flux from attenuating. The self-inductance effect produces an electromotive force of about 500V, and the accompanying mutual inductance effect of the secondary coil produces a high voltage electromotive force of about 30kV so that the spark plug generates a spark discharge. The faster the primary current is cut off, and the greater the primary current value, the higher the corresponding secondary voltage.

 The high voltage generated by the secondary winding of the ignition coil generates a spark between the center electrode and the ground electrode of the spark plug to ignite the compressed combustible mixture in the cylinder. The spark produced on the spark plug ignites the air-fuel mixture, and this process is usually called combustion in automobile maintenance work.

 The spark passes through the combustible mixture from the center electrode to the ground electrode. As a result, the combustible mixture is triggered along the path of the spark, generating a chemical reaction (through oxidation), and at the same time generating heat, forming the center of the flame.

 The center of the flame triggers the surrounding combustible mixture, so that the heat in the center of the flame spreads outwards (called flame propagation) and ignites the combustible mixture. If the temperature of the spark plug electrode is too low or the electrode gap is too small, the electrode will absorb the heat generated by the spark. As a result, the center of the flame will be extinguished, causing a lack of fire. This phenomenon is called "electrode quenching." If the electrode quenching effect is obvious, the center of the flame will be extinguished. The smaller the electrode, the smaller the quenching effect; the closer the electrode shape is to a square, the easier it is to discharge.

 How To Wire Points Car Ignition System Parts?

 The automotive electronic ignition system is the current mainstream automotive ignition system. The working principle is to turn on the ignition switch, the engine rotates, the Hall signal generator in the distributor triggers the blades of the impeller, and periodically passes through the air gap of the sensor. When the blade enters the air gap, the magnetic field on the Hall element is shielded, and no Hall voltage is generated. The signal voltage output by the Hall signal generator is a high voltage. The signal enters the igniter through the igniter socket. The internal circuit of the igniter turns on the high-power transistor VT and connects to the primary circuit. The circuit is: battery "+" → ignition switch → ignition coil primary winding → igniter high-power tube → ground → battery "-" pole. When the trigger impeller leaves the air gap, a magnetic field is applied to the Hall element to generate a Hall voltage, the signal generator outputs a low voltage, the igniter high-power tube VT is cut off, and the primary circuit is cut off. The secondary generates a high voltage and sparks through the spark plug. Ignite the mixture of fuel-air.

 https://www.mayautopart.com/products/car-ignition-parts/

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Car Headlight Parts

The automotive lighting system has two types lamps, lighting lamps and signalling lamps, and the headlight bulbs of lighting lamps are MAPMS star products, which are mainly introduced here. HID Headlight Bulbs, Halogen Headlight Bulbs and LED Headlights.  They can also let other drivers or pedestrians see the presence, location, size, driving direction and the driver's intention about driving direction and speed. These lamps can illuminate the driver's road and improve visibility.

 Headlight bulbs from MAPMS have certifications of IATF16949, CE, E-MARK, E-11, RoHS, FCC, DOT, IC.

 Taking safety, novelty, energy saving and high efficiency as the core of the products.

 Customized services can be provided according to the distributor's sales situation and market demand.

 In order to continuously meet customer needs, MAPMS also provides some headlight switches, and will continue to update the products of the headlight system in the future.

 How Does The Car Headlight Parts Work?

 Automobile lighting system is one of the necessary systems for safe driving. According to the function of automobile lamps, there are mainly two types, automobile lighting lamp and automobile signal lamp.

 According to its installation position and function, automobile lighting lamps include headlamp, fog lamp, license plate lamp, instrument lamp, ceiling lamp and work lamp.

 The automobile light signal lamps also includes turn signal lamp, hazard warning lamp, width indicator lamp, tail lamp, brake lamp and reversing lamp.

 In order to ensure the safety of the vehicle at night and improve its driving speed, the vehicle is equipped with a variety of lighting equipment and light signal devices, which has become an indispensable part of the vehicle. The automobile alarm device is mainly used to indicate the working condition of a certain automobile system and ensure driving safety. The vehicle lighting system is to ensure the safe and high-speed driving of the vehicle at night and under the condition of low visibility, improve the driving environment in the vehicle, and facilitate traffic safety management and vehicle use and maintenance.

 How To Wire Car Headlight Parts?

 Automotive lighting system is one of the necessary systems for safe driving. According to the function of automotive lamps, there are mainly two types automotive lighting lamp and automotive signal lamp.

 Base on its installation position and function, automotive lighting lamps have headlamp, fog lamp, license plate lamp, instrument lamp, ceiling lamp and work lamp.

 The automotive light signal lamps have turn signal lamp, hazard warning lamp, width indicator lamp, tail lamp, brake lamp and reversing lamp.

 The vehicle lighting system not only creats the convenience to drivers such as good vision and a signal to the behind drivers, but also reminds pedestrians or vehicles pay attention to the driving vehicle coming.

 https://www.mayautopart.com/products/car-headlight-parts/

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Car Expansion Tank

The Automotive Expansion Tank is a coolant storage tank, which ensures that the radiator is filled with coolant so that the coolant in the radiator has space to release when getting heated expansion, compensation capacity when cooling contraction, and a certain amount of surplus coolant to avoid consumption and shortage of coolant.

 The coolant flows in the engine cooling circuit, and expands in volume and pressure with temperature increasing. It is set to absorb this expanded volume and reduce the pressure of the cooling system. According to whether the expansion tank is pressurized or not, it is divided into two types, expansion tank and overflow kettle, they have different requirements for heat resistance, capacity and position.

 What Are the Symptoms of a Bad Expansion Tanks ?

 The function of the automobile expansion tank is to exhaust the gas in the cooling system, and can also replenish the cooling system with coolant. By increasing the pressure of the cooling system to increase the pressure of the water pump, it is also to prevent the harm of cavitation of the water pump. Expansion tank plays an irreplaceable role for vehicles, should pay close attention to its real-time dynamics. What are the symptoms if the expansion tank is damaged.

 The Vent Pipe is Blocked

 The vent pipe is blocked, which is a common fault of the expansion tank. Due to the blockage of the vent pipe, the air in the engine water jacket and radiator can not be discharged in time, then the coolant can not fill the whole cooling system, so that the coolant can not circulate normally, and the engine temperature rises rapidly. The fault phenomenon of "boiling" and water spraying of the cooling system often occurs, also coolant can not be replenished enogh.

 Cracking

 It is mainly made of plastic and age with the longer time it is used.

 Leakage & Broken

 Leakage at the seal of liquid level sensor.

 The connector fixing the inlet and outlet hoses of the expansion tank is broken.

 Features of Expansion Tank from MAPMS

 The expansion tank for automotive has the advantages of high mechanical strength, simple manufacturing process and corrosion resistance, which greatly prolongs the service life.

 https://www.mayautopart.com/products/car-expansion-tank.html

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Camshaft Position Sensors

Camshaft Position Sensor is a sensing device, also known as synchronous signal sensor. It is a cylinder discrimination and positioning device, inputs camshaft position signal to ECU, is the main control signal of ignition control. The function is to collect the position signal of the valve camshaft and input it to the ECU, the ECU can identify the top dead center of cylinder 1 compression, so as to carry out sequential injection control, ignition time control and deflagration control. In addition, the camshaft position signal is also used to identify the first ignition time when the engine is started. As the camshaft position sensor can identify which cylinder piston is about to reach TDC, it is called cylinder identification sensor (CIS).

 Camshaft Position Sensors Features

 Accurate detection of camshaft position changes.

 Precise control of ignition timing.

 Orderly control fuel injection.

 Effectively control deflagration and reduce fuel consumption.

 What Are the Symptoms of a Bad Camshaft Position Sensors ?

 The function of the camshaft position sensor is very important. It is the positioning sensor device for cylinder discrimination. If it is damaged, the ECU will not be able to obtain the information fed back by the sensor, resulting in abnormal control of the engine intake and exhaust system and affecting its performance. What symptoms will have if a camshaft position sensor is fault.

 Difficult to Accelerate

 The engine is weak and it is difficult to accelerate. After the camshaft position sensor is broken, it cannot detect the position change of the camshaft, and cannot correctly detect the position change of the camshaft, which affects the intake and exhaust volume of the intake and exhaust system, and then affects the engine performance.

 Increased Fuel Consumption

  Increased fuel consumption. If the camshaft position sensor is broken, the ECU will inject fuel disorderly! Cause fuel consumption, the vehicle is weak, and the speed can't come up!

 The Fault Light is Always on

 The fault light is always on. Generally, when the camshaft sensor fails, the engine fault light will be detected, so the fault indicator light on the vehicle instrument panel will light up to remind driver to check and repair the vehicle in time.

 https://www.mayautopart.com/products/camshaft-position-sensors/

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Block Ignition Coils

Block ignition coil has an built-in ignition module, usually 2, 4 or 6 ignition coils that control multiple spark plugs through the ignition lead without the need for a distributor. The ignition module adopts advanced chips, with stable quality and accurate signal.

 Key Features of Block Ignition Coils

 with stable quality.

 accurate signal.

 How Do You Test Block Ignition Coils？

 Block ignition coils have types for one outlet, two-outlet, four-outlet or six-outlet. When the twin-cylinder block ignition coils fail, it will cause two or four cylinders to not work (take a four-cylinder engine as an example), which manifests as the engine cannot be started or is difficult to start, idling stalls, and poor acceleration.

 Detection method: Use a multimeter to measure the resistance between cylinders 1, 4, 2, and 3 at the high-voltage end of the ignition coil with a multimeter at 20kΩ. Normally, there should be a certain resistance value. If the resistance value is infinite, it means that the secondary winding of the ignition coil is open circuit, and the ignition coil should be replaced. If the ignition coil is not faulty, check the connection wire of the ignition coil and whether there is an open circuit between the connection wire and the control computer.

 https://www.mayautopart.com/products/block-ignition-coils/