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Will a Faulty Catalytic Converter Affect Power and Fuel Consumption?

1 Answers
ClaraLynn
07/29/25 11:57am
No, if the catalytic converter is damaged, the result would be excessive exhaust emissions and the illumination of the engine fault light, but it would not significantly affect fuel consumption. Below is relevant information: Appearance: The catalytic converter looks like a metal can from the outside, but it contains a 'substrate' inside for purifying exhaust gases. This honeycomb-shaped ceramic substrate is coated with a precious metal slurry, primarily composed of platinum, rhodium, and palladium. Function of purifying exhaust gases: The precious metals act as catalysts, reducing hydrocarbons (HC) and carbon monoxide (CO) in the exhaust into water and CO2, while breaking down nitrogen oxides (NOx) into nitrogen and oxygen. This is the exhaust purification function of the catalytic converter.
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More Forum Discussions

What is the sign of engine overheating?

Engine overheating signs: The water temperature pointer on the vehicle dashboard exceeds the red mark, the water temperature warning light will illuminate, and sometimes white smoke may appear in the engine compartment. This indicates that the engine temperature is too high or there is insufficient coolant. It is recommended that the owner check whether the radiator coolant is normal, and whether there are leaks in the radiator, cooling hoses, and various components. The causes of engine overheating include: leaks in the cooling system or insufficient coolant; inaccurate or malfunctioning water temperature gauge; excessive scale in the cooling system, leading to poor heat dissipation; blockage of the radiator guard mesh or radiator core ventilation ducts by debris, resulting in poor heat dissipation; loose or broken water pump or fan belt. Measures to prevent engine overheating: Ensure sufficient coolant; check whether the thermostat is functioning properly. If the thermostat fails to open the main valve promptly as required, it must be replaced immediately. If a replacement cannot be obtained in time, the thermostat can be temporarily removed, but a faulty thermostat should never be left at the water jacket outlet; park the vehicle in a shaded area.
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What is Nissan's Extra-Large Off-Road Vehicle Called?

Nissan's extra-large off-road vehicle is called the Patrol, which is an imported mid-to-large-sized SUV under the Nissan brand. In terms of body dimensions, the Nissan Patrol measures 5165mm in length, 1995mm in width, and 1955mm in height. Exterior-wise, the Nissan Patrol features robust overall lines, with rugged headlights, wheels, and windows, embodying a tough off-road style. Its large departure angle ensures excellent off-road capability. Under the hood, the Nissan Patrol comes in two engine options: a 4.0-liter and a 5.6-liter. The 4.0-liter version is equipped with a six-cylinder naturally aspirated engine, delivering a maximum horsepower of 279 HP, a maximum power output of 205 kW, and a maximum torque of 394 Nm. The 5.6-liter version features an eight-cylinder naturally aspirated engine, producing a maximum horsepower of 398 HP, a maximum power output of 293 kW, and a maximum torque of 555 Nm.
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Can Vehicle Purchase Tax Be Paid Online?

Purchasing a new car requires paying the vehicle purchase tax, which can be done online by logging into the electronic tax bureau website to complete the declaration and payment process. The online payment process for the vehicle purchase tax is as follows: Registration: Open the electronic tax bureau website of your province, enter your name, ID number, phone number, and other information, then verify and complete the registration. Select Declaration Type: After registration, choose "Self-Declaration by Unit Taxpayer," "Declaration by Vehicle Dealership," or "Natural Person Declaration." Fill in Information for Declaration: Log in to the online tax bureau with your information, find "Vehicle Purchase Tax Declaration," where the declaration and payment instructions will be displayed. Confirm and check the box to proceed to the page, query the invoice information as needed, and fill in the corresponding details to generate the declaration form. Wait for Verification: Once generated, the online application is complete. Finally, wait for the tax bureau's system to complete the verification.
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Can I Get My License Plate at the DMV on Saturday?

The working hours of the DMV are from 8:30 AM to 11:30 AM and from 1:30 PM to 5:00 PM on weekdays (Monday to Friday), excluding statutory holidays. The DMV is closed on weekends, so license plates cannot be obtained on Saturday. The process of obtaining a license plate is as follows: Rubbing: Rubbing is usually done in the inspection area of the DMV, though sometimes 4S shops can assist with this step. Vehicle Inspection: In the inspection area, submit the prepared documents to the on-duty police officer for vehicle inspection. To facilitate the inspection, the owner should open the engine compartment cover in advance and remove the engine insulation panel. Obtaining the Vehicle License and Motor Vehicle Registration Certificate: After selecting the license plate number, the staff will print the license plate receipt and request payment. After payment, wait for a period of time to receive the vehicle license and motor vehicle registration certificate. Once these documents are obtained, pay the annual vehicle and vessel tax to receive the license plate for installation.
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How to Turn Off the Engine Auto Start-Stop in the Leiling?

Leiling's auto start-stop button is located on the right side of the central control screen. The switch button icon for the start-stop function is an A surrounded by a circle. Press it once to turn off the light, which means the auto start-stop is disabled. Engine auto start-stop is a system that automatically shuts off the engine when the vehicle comes to a temporary stop during driving. When it's time to move forward again, the system automatically restarts the engine. Here are some tips for using the Toyota Leiling's auto start-stop feature: 1. The auto start-stop function needs to be manually turned off by the owner every time they drive. To permanently disable it, you can only do so by visiting a 4S store for settings. 2. In congested traffic, you can turn off this function. The slow start may lead to being cut off by other drivers, and the comfort level may decrease. 3. When starting on a slope, turn off the auto start-stop function. The slow reaction may cause the vehicle to roll back, creating a dangerous situation.
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Can a Car Start If the Key Fob Battery Is Dead?

If the key fob battery is dead, you can press the start button on the key fob twice to successfully start the car. Methods to start the car when the key fob battery is dead: replace the battery; take out the mechanical key from the electronic key fob to open the car door, then press the brake pedal all the way down and press the start button on the dead key fob twice—this can also start the car. Even though the electronic key fob has no power, the start button can still detect the presence of the key fob's chip. Detailed steps to replace the key fob battery: First, prepare a 3V CR2032 alkaline battery; press the small button on the key fob to release the metal mechanical key. After removing the mechanical key, you can see the hidden part that was blocked by the metal key. Then, use your left thumb to pry open the key fob along the middle seam—a slight force will open one end of the battery cover. After opening the key fob cover, you can see the battery inside. Remove the old battery and insert the new one into the battery slot. Finally, press the cover back into place and slowly apply pressure to ensure it is securely closed. This completes the key fob battery replacement.
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