Emissions Archives - UnderhoodService

More Emissions

Do Oxygen Sensors Generate Electricity?

They are made of zirconium oxide, a chemical compound used to form the sensor’s thermal-driven electrochemical fuel cell.

Talking To Customers About Oxygen Sensors

One of the toughest components to sell as a maintenance item, or even a replacement item, is an oxygen sensor.

EGR, Secondary Air Injection And Emissions Management

EGR systems put a small amount of inert gas into the combustion chamber to control the temperatures.

How To Diagnose Slow or Sluggish Oxygen Sensors

When oxygen sensors are tested, manufacturers will introduce small amounts of oil to measure sensitivity.

E-15 Ethanol Damage to Fuel Pumps

One of the problems with ethanol is how it reacts to water in the air and in the tank.

Oxygen Sensor Questions Answered

If an O2 sensor is not reading properly or is borderline, it should be replaced regardless of its age or mileage.

Managing (DPF) Diesel Particulate Filter Regeneration Cycles

The DPF is designed to store the soot and ash, to later burn them off during a regeneration cycle.

Ultimate Underhood – Gasoline Particulate Filters

Just like a DPF, a gasoline particulate filter (GPF) traps and stores soot particles in the exhaust stream.

Why O2 Sensors Fail To Calculate Exhaust Levels Over Time

As miles accumulate, O2 sensors effectively “catch a cold,” meaning they can’t breathe like they should.

Clearing The Air About Diesel Exhaust Fluid (DEF)

Reducing emissions to acceptable levels is achieved through a four-stage process.

Emissions 101: A Basic Understanding Of How Catalytic Converters Operate

To begin, an internal combustion engine creates heat energy by igniting a mixture of gasoline and atmospheric oxygen with a high-voltage spark.

10 Commandments Of Catalytic Converter Replacement

It is not that the repair itself is overly complicated; it is the paperwork, laws and warranty issues that can be the real headache.