Exhaust Archives - Page 6 of 19 - UnderhoodService
Mazda Feature: Driveability And Check Engine Light Diagnostics

Import Specialist Bob Dowie takes a look at some of the more common ailments that will bring your Mazda customers into your service bay with a check engine light complaint, as he covers common DTCs, stalling and ignition issues and new technology.

VIEWPOINT: Going For The Gravy Can you sell diagnostic time?

The gravy in the future will be diagnostic time and procedures performed with scan tools. You can see it with steering angle sensors, TPMS and re-calibration of sensors. In the future, it is only going to get better.

Emico Unveils New Logo, Branding

Emico, manufacturer of automotive catalytic converters for aftermarket applications, down pipes and exhaust system components, has unveiled a revamped logo in the wake of its sale to Advanced Clean Air Technologies Global (ACAT).

8 Common Diagnostic Mistakes

Many diagnostic mistakes that become “diagnostic dilemmas” are caused by basic oversights or incorrect assumptions on the part of the technician. Research time and testing time have become the cornerstones of modern diagnostics.

Tech Tip: Volkswagen Check Engine Light Is On With Trouble Code P2187

The check engine light is on, with trouble code P2187, too lean off idle bank 1. This “Fast Fix” from Identifix shows how one tech solved this issue.

ASE L1: Understanding Scan Tool Modes

Section B, Item 8 of the ASE L1 certification task list states:
“Interpret OBD II scan tool data stream, diagnostic trouble codes (DTCs), freeze-frame data, system monitors, monitor readiness indicators, and trip and drive cycle information to determine system condition and verify repair effectiveness.” What ASE is talking about are the modes of OBD II scan tool protocol. Modes are usually denoted by a dollar sign and a two-digit number.

Fall Promotion Rewards Consumers For Walker Direct-Fit Catalytic Converter Purchases

Consumers can receive a $40 Visa prepaid card for a Walker direct-fit catalytic converter purchased between September 1 and October 31, 2013, through Tenneco’s Walker “Ultra Rewards!” promotion. Available at participating automotive service locations nationwide, the Walker “Ultra Rewards!” incentive offers a $40 Visa prepaid card to consumers who purchase a qualifying Walker direct-fit catalytic converter or Walker CalCat direct-fit catalytic converter.

Using Fuel System Testers To Diagnose Driveability Concerns

Shop owner and automotive trainer Karl Schneider helps you fix driveability concerns, focusing on loss-of-power issues on vehicles with an electric return fuel system.

TECH TIP: Using a Five-Gas Analyzer to Diagnose Catalytic Converters

One of the most effective ways to resolve emissions issues is by sampling the exhaust gases with a five-gas analyzer. Levels of the five gases can indicate the root cause of the problem.

TECH TIP: Using a Five-Gas Analyzer to Diagnose Catalytic Converters

One of the most effective ways to resolve emissions issues is by sampling the exhaust gases with a five-gas analyzer. Levels of the five gases can indicate the root cause of the problem.

TECH TIP: Converter Break-In Periods

A replacement catalytic converter needs a proper “break-in” period. If the converter is not warmed-up (broken-in) properly, the substrate inside could be adversely affected and eventually cause the converter to fail down the road.

Catalytic Converters: New Diagnostic Strategies

Catalytic converter failures on today’s vehicles are rarely caused by defects in catalytic converters. Most catalytic converter failures can be traced back to problems caused by what happens in the combustion chamber. Almost every part on the engine determines how long it will last. It could be a faulty line of computer code that pulses an injector too long, or it could be a stuck piston ring that allows oil to be sucked into the combustion chamber. These little details can limit the life of a catalytic converter.