Emissions Archives - Page 8 of 24 - UnderhoodService
Diagnostic Dilemmas: Approaching No-Code Diagnostics

Thanks to the increasing reliability of modern vehicles, most diagnostic technicians are seeing fewer pattern-failure driveability complaints. For that reason, many techs won’t gamble expensive shop time chasing an illusive no-code driveability complaint. Instead, many will write “no problem found” on the repair order and move on to the next vehicle. Unfortunately, at some point in time, the intermittent, no-code driveability will either be solved or the vehicle will be traded or sold for scrap.

2014 Corvette LT1: The Engine Under the Hood

The art and science behind its combustion system makes the Corvette LT1 one of the most advanced V8 engines in the world.

AVI Live Training: Toyota EVAP Livestream With Bob Pattengale

Bob Pattengale, from Robert Bosch, LLC, will be covering Toyota EVAP Diagnostics. This system started appearing in 2005 and is now the primary system used on Toyotas. The live online training program is February 13th from 6:00 p.m. to 7:00 p.m. EST. The training program is FREE (free AVI OnDemand account required).

New Walker Emissions Control Website Features Enhanced Functionality, Important New Content

Tenneco has launched a new website for its Walker emissions control brand products that provides a wealth of valuable, timesaving diagnostic tools and other important content designed specifically for automotive professionals.

Tech Feature: Diagnosing Diesel Injector Problems

Injectors can fail in ways other than becoming just worn out or tired. Diesel guru Bob McDonald discusses common and not so common injector fails.

2013 VISION Set to Offer Power-Packed Industry Training

Four full days of education cover management, technical and educator topics. Registration for individual courses will be available Feb. 15.

Phaser-Style Variable Valve Timing System Controls And Operation

Phasers commonly can be found on just the exhaust cam or on both the intake and exhaust cams.

Diagnostic Solutions: No-Code Sensor Failures

Import Specialist Contributor Gary Goms takes a look at how to utilize one or more scan tool features to detect an intermittent, no-code sensor failure.

Tech Tip: Kia Check Engine Light Is On With MAF Sensor Code

Kia Rio’s check engine light is on and there is a mass air flow (MAF) sensor range/performance code in the system. The engine will hesitate at times.

Directions: More Diesels Heading Down The Pipeline

It may be a good idea to have some of your techs become ASE certified in diesel engine diagnostics, which you can market to your diesel-driving customers.

Diagnostic Solutions: MAF Sensor Testing Methods

Troubleshooting MAF sensor problems can become a major headache for diagnostic technicians because the failure is usually one that involves a calibration error, rather than an outright electrical or mechanical failure.

Tenneco Bringing New Coverage, Latest Technologies To Walker Converter Line

Several popular Toyota, Honda, Subaru, Hyundai and Kia applications will be among dozens of late-model import vehicles that will be added to Tenneco’s Walker line of catalytic converters in 2013. The company also plans to significantly increase its offering of EPA- and CARB-compliant manifold converters to reflect the latest emissions control designs being used by global vehicle manufacturers.