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The Air Fuel Sensor versus The Oxygen Sensor

From the oxygen content, the ECM can determine if the air/fuel ratio is rich or lean and adjusts the fuel mixture accordingly. A rich mixture consumes nearly all the oxygen, so the voltage signal is high, in the range of volts. A lean mixture has more available oxygen after combustion than a rich mixture, so the voltage signal is low, volts. At the stoichiometric air/fuel ...

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What Happens If You Disconnect Mass Air Flow Sensor ...

· If the car dies when you disconnect the mass airflow sensor, then that means it was working right and that your computer has issues. It isn’t able to use the tables programmed in it to guess the amount of fuel needed. Also, if the computer isn’t the issue, then it means one of the other sensors is probably off if the car isn’t able to ...

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Can I run AvGas in my vehicle? Fuel Expert

AvGas might seem an obvious choice but closer study raises some doubt. AvGas LL100 stands for "Low Lead 100 Octane". TEL (Tetraethyllead) is added to raise the octane. When used in a motor vehicle this fuel will leave a lot of lead deposits in the motor. 100LL has a high lead content ( grams per litre), even higher than leaded race fuels.

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Top 6 car diagnostic software for Windows and Mac | Fleet ...

Vehicle maintenance apps usually help to track the car''s service and gas fillups. With a vehicle monitoring application that can be customized based on the needs of your organizations and customers, you can be sure your drivers are following the best practices. Cprime Studios is a recognized provider of custom automotive diagnostic software development for connected cars as well as mobile ...

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What Is Lead Substitute and Do You Need It? | Advance Auto ...

· Most of the cars that had problems with unleaded fuel suffered whatever damage they were going to suffer in the ''70s and ''80s, and have already been taken off the road. On the other hand, many classiccar owners argue that lead substitute can''t hurt your engine and may help reduce any risk of using unleaded fuel in an engine intended for leaded ...

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Cleaning O2 sensor How to avoid the need to replace the ...

A faulty oxygen sensor has the direct consequence of disrupting the engine airfuel balance. This leads to an increase in pollutants emitted by the engine, as well as causing the engine to stutter and consequently fuel consumption to increase. 3 When does the Oxygen Sensor need to be replaced ? The lifespan of a Oxygen Sensor is 160,000 km on average, as long as it is not shortened by engine ...

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How to Change an Oxygen Sensor | Advance Auto Parts

· On many vehicles, the O2 sensor can last the entire life cycle of the car, but on many others the sensor can fail before 100,000 or so miles. A failed O2 sensor will result in: Excessive fuel consumption; Poor power and acceleration; Rough idle; Rich fuel mixture and black smoke; Trouble code and an illuminated Check Engine Light ; Older vehicles had a single O2 sensor in the engine ...

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5 Symptoms of a Bad Knock Sensor (and Replacement Cost in ...

· A lean air fuel ratio maximizes fuel economy. Advanced timing burns the mixture earlier in the combustion cycle, which maximizes power. Both of these situations can cause engine knock when taken to an extreme. ECUs often run on the leaner side from the factory for emissions purposes. This is usually fine, but occasionally a manufacturer will take it too far. When this happens, the manufacturer ...

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Oxygen Sensor Replacement Service Cost

The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel ...

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Alphasense UK | Gas Sensors Air Quality Monitors

Delivering highquality particle counts and sizing at affordable prices. View Products Contact Us. Alphasense With over 25 years’ experience in the design and manufacture of Gas and Particulate sensors, Alphasense has established a reputation as a reliable source for a wide range of gas sensor technologies. The Company supplies highquality Oxygen,CO 2, toxic and flammable Gas sensors to ...

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How does the ECU (Engine Control Unit) in a car work ...

This sensor can also supply data for, for example, the electric fans or the coolant temperature on the instrument panel. Lambdasensor. The lambda sensor is a sensor also known as the oxygen sensor (O2sensor). This sensor literally measures the amount of oxygen in the exhaust gases. Crankshaft position sensor and camshaft sensor

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Sensors: When to Replace Them | KnowYourParts

O2 sensors that are failing tend to read lean, which causes the fuel system to run overly rich to compensate. The result is increased emissions and fuel consumption. The responsiveness of the O2 sensors can be tested using various procedures (making the fuel mixture rich or lean and watching the sensor’s response on a scan tool with graphing capability). If an O2 sensor is sluggish or ...

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High CO2 Levels in Your Car? |

While the recirculate feature can be useful, using it for even short periods can lead to high levels of CO2 in an enclosed car. SAE International published a paper titled, "Modeling CO2 Concentrations in a Vehicle Cabin" in which they documented the quick rise in CO2 levels in a passenger car cabin. Their data showed that CO2 levels can rise ...

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20 Most Common Car Problems Complaints — What to Do

While a gas cap costs only a few dollars to replace, ignoring that warning can lead to catalytic converter failure, a problem that will run you over 1,000 to solve. Malfunctioning Sensors. Modern cars run with the help of an array of hightech sensors, but those come with their own issues. Faulty fuelair sensors are some of the most common ...

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What the Home Mechanic Needs to Know about O2 Sensors

When the O2 sensor reading goes lean (low voltage), the computer reverses again making the fuel mixture go rich. This constant flipflopping back and forth of the fuel mixture occurs with different speeds depending on the fuel system. The transition rate is slowest on engines with feedback carburetors, typically once per second at 2500 rpm. Engines with throttle body injection are somewhat ...

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