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Oxygen Sensors Are Part Of Engine Management
4/4/2013
Most O2 sensors are the switching type that generate a rich or lean voltage signal depending on how much unburned oxygen is in the exhaust. A few, like the "titania" O2 sensors in some older Jeep, Nissan and Toyota applications change resistance to indicate a rich or lean condition in the exhaust. more
Catalytic Converters Are Big-Ticket Items
2/22/2013
Original equipment converters are supposed to last upward of 150,000 miles or more, but may fail sooner for a number of reasons. more
When To Replace Sensors And Why
11/11/2011
Sensors are designed to last the life of the vehicle or until they wear out. more
ASE PS2 Test Preparation Guide: Exhaust Parts
10/10/2011
● MUFFLERS AND RESONATORS — Used to control exhaust noise, the muffler or resonator is mounted behind the catalytic converter. A second muffler or resonator may be located further back for additional sound control. Vehicles with dual exhausts u... more
19th Annual Technical Forum: Exhaust
8/10/2011
How can you tell when a catalytic converter needs to be replaced? more
Oxygen Sensors Make Emissions Control Possible
4/4/2013
Many technicians prefer to install "exact fit" replacement sensors because they are faster and easier to install and save the time and trouble of having to cut and slice the sensor harness wiring. more
A Look At O2 Sensors
9/10/2012
Oxygen sensors have been used for more than a quarter of a century, dating back to 1980 when the first computerized engine control systems appeared. The oxygen (O2) sensor is part of the fuel management system. It monitors unburned oxygen in the exhaust.... more
ASE PS2 Test Preparation Guide: Emission Controls
10/10/2011
● POSITIVE CRANKCASE VENTILATION (PCV) — Prevents crankcase blowby vapors from escaping into the atmosphere by siphoning the vapors back into the intake manifold so they can be reburned in the engine. Used since 1968 on most vehicles, the main ... more
19th Annual Technical Forum: Oxygen Sensors
8/10/2011
What are Air/Fuel sensors, and how do they differ from ordinary Oxygen Sensors? more












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