What are the reasons for the ETC lane always failing to detect?

What are the symptoms of a bad oxygen sensor?

The symptoms of a bad oxygen sensor are: 1. Decreased engine power, increased fuel consumption, and unstable idle during operation; 2. Excessive carbon content. The working principle of the oxygen sensor is: using a ceramic sensitive element to measure the oxygen potential in the heating furnace or exhaust pipe, and calculating the corresponding oxygen concentration based on the chemical equilibrium principle, to monitor and control the air-fuel ratio of combustion in the furnace, ensuring product quality and meeting exhaust emission standards. The detection method for the oxygen sensor is: 1. Unplug the oxygen sensor connector; 2. Use a multimeter's resistance setting to measure the resistance value between the sensor's 1 and 2 connectors; 3. A resistance value between 4 and 40 is normal, and if the resistance value is abnormal, the oxygen sensor should be replaced.

10

4

Share

Can ETC be used immediately after installation?

Newly installed ETC cannot be used right away; the ETC device must be activated before normal operation. For passenger cars, the ETC is typically installed in the upper middle part of the front windshield, while for large vehicles like trucks and buses, it is installed in the lower middle part. The appropriate installation position should be no lower than 1.2 meters and no higher than 2.5 meters, with an installation angle between 30 to 90 degrees. For vehicles with factory-installed or aftermarket anti-explosion film, which may interfere with microwave communication signals, the ETC should be installed in the microwave window strip. Below are precautions for ETC installation: Do not obstruct the driver's view; it's best to install it behind the rearview mirror: Many car models have windshields with a steep incline, which can reduce the driver's field of vision. If this is not considered during ETC installation, it may increase blind spots. Installing it behind the rearview mirror on the right side helps avoid obstructing the view. Avoid affecting charging: The ETC electronic tag consumes power but generally does not require charging or battery replacement, as it has a built-in solar panel for self-charging. Therefore, during installation, avoid the blackened areas of the windshield and positions that might block the solar panel. Do not remove the device arbitrarily once installed: The adhesive in the middle has an anti-tamper lever connected to a switch. Once the ETC tag is installed, the windshield presses this lever in. If removed arbitrarily, the lever will pop out and trigger the switch, locking the electronic tag and rendering it unusable. In such cases, you would need to visit an ETC service point to unlock it. This mechanism is designed to prevent multiple vehicles from sharing one device. Notes for using ETC: The ETC transaction sensing range is 8 meters. To avoid issues caused by the preceding vehicle's faulty ETC device, maintain a distance of at least 10 meters from the vehicle ahead to prevent automatic payment for that vehicle. The ETC lane recognition speed is 20 km/h; driving too fast may result in failure to read the vehicle's device information and cause payment failure. If using a debit card linked to ETC, insufficient balance may also lead to payment failure.

19

2

Share

What is the minimum ground clearance of the Chevrolet Equinox?

The minimum ground clearance of the Chevrolet Equinox is 170mm, which reflects the vehicle's ability to pass over obstacles or uneven ground without collision. Taking the 2021 Chevrolet Equinox as an example, it is a mid-size SUV with body dimensions of 4646mm in length, 1843mm in width, and 1684mm in height, a wheelbase of 2725mm, a fuel tank capacity of 56 liters, and a curb weight of 1535kg. The 2021 Chevrolet Equinox is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 169PS, a maximum torque of 250Nm, and a maximum power of 124kW, paired with a 6-speed automatic transmission.

9

2

Share

Does the Wuling Hongguang S have airbags?

The Wuling Hongguang S does not have airbags. The Wuling Hongguang S is a crossover independently developed product between commercial vehicles and passenger vehicles, launched by SAIC-GM-Wuling based on the Wuling Hongguang model. Taking the 2020 Wuling Hongguang S as an example, it is a microvan with body dimensions of: length 4390mm, width 1660mm, height 1750mm, wheelbase of 2720mm, fuel tank capacity of 50l, and curb weight of 1185kg. The 2020 Wuling Hongguang S has a MacPherson independent front suspension and a leaf spring non-independent rear suspension. It is equipped with a 1.2L naturally aspirated engine, with a maximum horsepower of 76PS, maximum power of 56kW, maximum torque of 110Nm, and is paired with a 5-speed manual transmission.

10

4

Share

How to Determine if the Charcoal Canister Solenoid Valve is Good or Bad?

Methods to determine if the charcoal canister solenoid valve is good or bad include: 1. If the vehicle experiences fuel nozzle kickback, the charcoal canister is filled with gasoline, there is weak acceleration or jerking, and unstable idle speed that fluctuates, it indicates a damaged charcoal canister solenoid valve; 2. If the engine cannot start after shutting off or there are abnormal noises while driving, it signifies a damaged charcoal canister solenoid valve. Solutions for a damaged charcoal canister solenoid valve are: 1. Clean the fuel tank exhaust system; 2. Clean or replace the charcoal canister solenoid valve. The working principle of the charcoal canister solenoid valve is: It controls the purging function of the charcoal canister through pulse-width modulation of electrical signals. The ECU computer, based on different engine operating conditions, grounds the solenoid valve circuit at a certain frequency to open or close it. The ECU computer manipulates the normally closed solenoid valve to control the vacuum purging of the charcoal canister.

1

0

Share

What does a 6-speed manual-automatic transmission mean?

A six-speed manual-automatic transmission refers to a gearbox that combines six-speed manual and automatic shifting functions. As the name suggests, "manual-automatic" integrates both manual and automatic gear shifting methods in a car. Literally, it means a vehicle possesses both manual and automatic gear functions simultaneously. An automatic transmission includes a manual-automatic transmission, which is an automatic transmission capable of manual gear shifting. The manual mode in a manual-automatic transmission differs from a pure manual transmission car. Although it has a clutch mechanism in its structure, it does not require driver operation, meaning it features automatic clutch control. A conventional automatic transmission typically has neutral, drive, hill ascent first gear, hill ascent second gear, and reverse gear. In addition to these, a manual-automatic transmission also includes a function that allows the driver to manually increase or decrease gears, usually designated as "+" and "-" gears. Unlike conventional automatic transmissions, a manual-automatic transmission does not have a clutch pedal because it is also an automatic transmission, and the clutch is not controlled by the driver. When using the manual mode in a manual-automatic car, the driver simply shifts to manual mode and adjusts the gears up or down based on speed changes. If the speed does not match the corresponding gear, the gear will automatically shift down; if the speed exceeds the current gear, the driver needs to manually shift up. A manual-automatic transmission combines the manual and automatic shifting methods of a car. This transmission merges the advantages of both automatic and manual transmissions, minimizing power loss in the shifting system. The manual mode allows the driver to freely adjust gears and RPM based on subjective preferences. The manual mode in a manual-automatic car differs from a pure manual transmission car. Although it includes a clutch mechanism, it requires driver operation, meaning automatic clutch control. When using the manual mode in a manual-automatic car, the driver simply shifts to manual mode and adjusts the gears up or down based on speed changes. If the speed does not match the corresponding gear, the gear will automatically shift down; if the speed exceeds the current gear, the driver needs to manually shift up. Working Principle: Structurally, a manual-automatic transmission mainly consists of a standard gearbox (similar to a manual transmission), an electronically controlled clutch, an automatic shifting mechanism, and an electronic control unit. The electronically controlled clutch automatically engages, disengages, or "holds" the clutch as needed. During operation, the transmission ECU controls a stepper motor to move the clutch fork, engaging or disengaging the clutch. The automatic shifting mechanism automatically selects the appropriate gear as needed, typically using two stepper motors controlled by the transmission ECU. The gear lever setup is similar to that of a conventional automatic transmission, with no clutch pedal. Essentially, this transmission uses automatic control to simulate manual gear shifting. Under normal driving conditions, it operates similarly to a hydraulic automatic transmission, except that the clutch is disengaged when the car is stationary. Therefore, if parked on a slope, the driver must apply the brakes to prevent rolling. When using the manual mode, the driving experience resembles that of a manual transmission car, with direct power delivery, no need to operate a clutch pedal, and the ability to skip gears when shifting up or down.

9

2

Share

What are the reasons for the ETC lane always failing to detect?

What are the symptoms of a bad oxygen sensor?

Can ETC be used immediately after installation?

What is the minimum ground clearance of the Chevrolet Equinox?

Does the Wuling Hongguang S have airbags?

How to Determine if the Charcoal Canister Solenoid Valve is Good or Bad?

What does a 6-speed manual-automatic transmission mean?

How many points is each question in the Subject 1 exam?

What does 0w40 mean?

Do You Need to Press the Brake When Shifting an Automatic Transmission?

What are the reasons for the sudden increase in engine noise of a car?