New 02 Downstream Oxygen Sensor 234-4835 for Nissan Armada Titan Infiniti Qx56

New 02 Downstream Oxygen Sensor 234-4835 for Nissan Armada Titan Infiniti Qx56

Product Name: Lambda Sensor
Oem No.: 7700274189/ 8200036542
Car Model: For Renault
Brand Name: R&C
Warranty: 12 Months
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Product Description

Product Name: Lambda Sensor

Oem No.: 7700274189/ 8200036542

Car Model: For Renault

Brand Name: R&C

Warranty: 12 Months

Packing: Neutral Packing Or As Requested

Minimum Order: 35 Pcs

Material: High Speed Steel

Incoterm: Fob And Ex-Work

Delivery: Any Port Or Warehouse In China And Express Courrier (Dhl, Fedex, Ups, Tnt)

Hs Code: 8409919990

Gross Weight: About 150gr / Piece

Lead Time: 7 Days After Payment Received And Confirm Everything.

Payment Terms: 100% Payment

1. T/T

2. Paypal

3. Western Union

4. Alibaba Order


What is an Oxygen Sensor?

The oxygen sensor, also known as a lambda sensor, was developed in the late 1960s by Dr. Gunter Bauman for the Robert Bosch GmbH company. This sensor is an electronic device used to measure the proportional amount of oxygen in a liquid or gas. The original oxygen sensor was made using ceramic coated zirconia and platinum. In order to make the O2 sensor more capable of mass production, planar oxygen sensors were developed. This modernized O2 sensor was developed by NTK in 1990 for use in the Honda Civic and Accord. Made using layers of High-Temperature Cofired Ceramic (HTCC) green tapes, the current style of the sensor is made more efficient than the original style sensors.


What Does an Oxygen Sensor Do in a Car?

All cars that were manufactured post-1980 feature an oxygen sensor. It is located within the emissions control system. When functioning, the O2 sensor sends data to the management computer located within the engine. In your car, a functioning O2 sensor ensures that your engine is running at top performance. Additionally, this sensor keeps your emissions in check and alerts you to when emissions are too excessive. For states that have vehicle inspection programs to regulate emissions, the use of the CEL and O2 light will alert officials to any excessive emissions. As a result, if one or more of your oxygen sensors is faulty during an emissions inspection for your car, you will most likely not pass the inspection.


What Do Oxygen Sensors Do?

When a gasoline-powered engine burns gasoline there is oxygen present. Oxygen in an engine is the result of a number of factors including the air temperature, altitude, engine temperature, load on the engine, and barometric pressure. The ideal ratio for oxygen and gasoline is 14.7:1, which slightly varies depending on different types of gas. In the instance that there is less oxygen present fuel will remain after combustion, which is referred to as a rich mixture. On the other hand, if there is more oxygen present it is referred to as a lean mixture. Both the rich and lean mixtures are bad for your car, as well as for the environment. A rich mixture results in a fuel that is not burned that creates pollution. A lean mixture generates nitrogen-oxide pollutants, which can lead to decreased vehicle performance and engine damage. Oxygen sensors are positioned near points in the exhaust system so to determine if there are rich or lean mixtures in your car.

Typically, an O2 sensor creates a voltage due to a chemical reaction resulting from an off-balanced gasoline to oxygen ratio. Most car engines can determine how much fuel to expend into the engine based on the voltage of the O2 sensor. If your oxygen sensor fails to function properly, your engine management computer cannot determine the air to fuel ratio. Therefore, the engine is forced to guess how much gasoline to use, resulting in a polluted engine and a poorly functioning vehicle.


How to Test an Oxygen Sensor

To test your oxygen sensor, you can either leave it attached to your vehicle or take it off for testing. Testing requires two tools: a high-impedance digital voltmeter and a backprobe. A mechanic at a Meineke repair shop has these necessary and specialized tools for checking O2 sensors. The first step to checking an O2 sensor is to locate the surrounding wires to make sure they are intact and without visible signs of wear and tear. Next, the vehicle must be started and allowed to run until the engine reaches 600 degrees F so to ensure an accurate reading of the sensor. Using the back probe and voltmeter, the oxygen sensor is measured at a set number of points and under particular conditions to determine any faulty measurements. As the testing of an oxygen sensor requires specialized training and tools, it is best to allow a mechanic to handle this voltage-based testing.

To schedule an oxygen sensor testing, bring your car into your local Meineke Car Care Center where you can let the car care professionals handle the precise work of oxygen sensor testing.


Company Overview

Guangzhou China Pacific United Int' l Import and Export Limited was founded in 2012, it is a leading manufacturer or trade company of high-tech R&D automotive components.

Provide quality components such as fuel injectors, general sensors, electrical systems, ignition systems, valves, engine bearings, crankshafts, camshafts, etc.

It is an export-oriented enterprise integrating R&D, production and sales. It is a foundry manufacturer of many internationally renowned automobile brands. The products are exported to North America, Central America, South America, Europe, Southeast Asia, and we enjoy high quality products and services at competitive prices.



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We will wholeheartedly provide you with high cost-effective New 02 Downstream Oxygen Sensor 234-4835 for Nissan Armada Titan Infiniti Qx56 and meticulous after-sales service. We have strong technological development strength, absorb international cutting-edge high-tech technologies, recruit top talents in the industry, and we take meeting the needs of customers as our responsibility. With increasing competition in the market, more and more companies have improved their competitiveness with high-quality, personalized products and services.
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