Making Sense out of Sensors
Sure, you may be familiar with some basic sensor operation. But as an automotive technician, you may not really understand all of the ins and outs of many common sensors. Do you really understand how they work, how the PCM views them and the possible scan tool and DVOM results when things go wrong? If
Tech Tip: Updated Routing of Volvo O2 Sensor Wiring
New routing has been developed for oxygen sensor wiring on 1997-’98 Volvo 850 models, S70/V70/C70, to prevent contamination from reaching the probe’s reference air. If one oxygen sensor is replaced, the new adapter wiring must be installed for both sensors.
DENSO Introduces Oxygen Sensor Training for Service Technicians
DENSO Sales California, Inc. has introduced an oxygen sensor training and promotion kit designed especially for professional service technicians.
Tech Tip: Oxygen Sensors – Monitoring Converter Efficiency
In 1996, automakers did the aftermarket a huge favor. They added "downstream" oxygen (O2) sensors to their vehicles. The downstream O2 sensors are located just behind the catalytic converter, or on some Fords, in the converter itself.
Diagnostics Through CAN Networks
Since model year 2003, a growing number of domestic and import vehicles have been built with a new onboard communications protocol called CAN (Controller Area Network). CAN is essentially an engineering standard for how computers and modules talk to one another via the serial data bus in a vehicle’s wiring system. It’s a high speed
Better Breathing: EGR Improvements
So Why Do We Have EGR? By Glen Beanard, technical contributor The Exhaust Gas Recirculation (EGR) system was created in the early 1970s for the same No. 1 ranking motivation that drives every other engine management system design — to reduce emissions. The EGR valve targets one specific pollutant, oxides of nitrogen (NOx). Under normal
Eastern Introduces New 2006 Catalog Featuring Catalytic Converters and Related Components
Eastern Manufacturing, a manufacturer of catalytic converters and related components, has introduced a new catalog, which features the complete line of direct-fit, performance and universal catalytic converters for cars, vans, and light- and heavy-duty trucks.
Tech Update: A to VSV…Troubleshooting Toyota/Lelxus EVAP Systems
When I first had to diagnose a Toyota EVAP code, I found the available information a little lacking. So I decided to do a little homework…and the following article is the result of what I’ve learned. I hope it helps you diagnose and repair these systems a little easier. First, a word on basic EVAP
Modine’s Joplin, MO, Facility Reaches Milestone by Producing its 1,000,000th EGR Cooler
Modine Manufacturing Company announced recently that its Joplin, MO, facility has reached a significant milestone, producing its 1,000,000th Exhaust Gas Recirculation (EGR) cooler for truck, off-highway and heavy-duty vehicles.
DENSO Introduces Oxygen Sensor Training for Service Technicians
DENSO Sales California, Inc. has introduced an oxygen sensor training and promotion kit designed especially for professional service technicians. The training kit features a 12-minute sales training video that provides detailed information for the professional technician on how to explain to consumers just how oxygen sensors function, the importance of conducting regular system checks and why proper servicing of oxygen sensors is important to maximize a vehicle’s performance.
VW OBD II Revisited: Good Vehicle Service History Helps Determine Causes of Repeat Failures
After 10-plus years of dealing with OBD II, it should be apparent that we are on a learning curve that probably has no end. Almost daily we have a VAG model come into the shop with a check engine light on, or a “state OBD II failure” form. Although we have the latest scanner software
Tech Tip: Curing Exhaust System Buzz on Acura Integras
A buzz from the exhaust system between 3,500 and 3,600 rpm can be caused because the flexible joint connections in the exhaust system have insufficient spring tension.