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Categories: Tech Stuff
Fuel Trim: Finding a Vacuum Leak and Performance Issues Using Fuel Trim Data

A customer doesn’t generally care about whether their vehicle is in fuel control, but they certainly care if it’s not running correctly or...

http://www.autoserviceprofessional.com/article/100588/fuel-trim-finding-a-vacuum-leak-and-performance-issues-using-fuel-trim-data
Categories: Tech Stuff
GM EcoTec3 Truck Engine GDI Concerns: New Technology Affects Service Practices

General Motors’ EcoTec3 family of engines is a familiar sight under the hoods of many GMC and Chevrolet pickup trucks and SUVs. It is available in...

http://www.autoserviceprofessional.com/article/97840/gm-ecotec3-truck-engine-gdi-concerns-new-technology-affects-service-practices
Categories: Tech Stuff
Emissions Gas Analysis: Five-gas Analysis and the Importance of Lambda

The actual combustion process that takes place in the modern vehicle with a gasoline engine hasn’t changed much since the four stroke engine was...

http://www.autoserviceprofessional.com/article/95607/emissions-gas-analysis-five-gas-analysis-and-the-importance-of-lambda
Categories: Tech Stuff
Should OBD-II be Your First Step in Diagnosing an Engine Management Issue? Yes, and Here’s Why...

We can’t possibly have all the tools that we need to repair every vehicle that comes into our shop, even if we concentrate on only a couple of...

http://www.autoserviceprofessional.com/article/97711/should-obd-ii-be-your-first-step-in-diagnosing-an-engine-management-issue-yes-and-heres-why-
Categories: Tech Stuff
SRS Diagnostics and Repairs: Service Can Be Intimidating, But it Doesn’t Need to Be

The Supplemental Restraint System (SRS); or in GM jargon SIR (supplemental inflatable restraint system) uses more components than just airbags: modules,...

http://www.autoserviceprofessional.com/article/101872/srs-diagnostics-and-repairs-service-can-be-intimidating-but-it-doesnt-need-to-be
Categories: Tech Stuff
Can We Trust Oil Life Monitors?

If you ask most automotive technicians if they trust an oil life monitor, or OLM, they will typically say “no way” and the reasons for this...

http://www.autoserviceprofessional.com/article/102480/can-we-trust-oil-life-monitors
Categories: Tech Stuff
HFO 1234yf Refrigerant and Coolant Mapping

When I look at the new vehicles that are rolling into the showrooms and being advertised on TV, the focus seems to be on customer comfort, convenience...

http://www.autoserviceprofessional.com/article/95976/hfo-1234yf-refrigerant-and-coolant-mapping
Categories: Tech Stuff
There’s No Stopping the Electric Parking Brake

The advent of electronic parking brake (EPB) systems offers advanced technology but can pose challenges for the service technician. This article explains...

http://www.autoserviceprofessional.com/article/100593/theres-no-stopping-the-electric-parking-brake
Categories: Tech Stuff
Mazda Skyactiv Technology -- What it is, and What it Has Meant to Engine Packages

I am sure that by now almost all of us have seen or heard the advertising of Mazda’s Skyactiv technology, but how many of us actually understand...

http://www.autoserviceprofessional.com/article/95724/mazda-skyactiv-technology-what-it-is-and-what-it-has-meant-to-engine-packages
Categories: Tech Stuff
Some Diagnostics Hurt Your Brain... Fixing Difficult and Perplexing Problems

I enjoy working through diagnostics, with my favorite being driveability concerns. The most common diagnostics that I perform relate to check engine...

http://www.autoserviceprofessional.com/article/95840/some-diagnostics-hurt-your-brain-fixing-difficult-and-perplexing-problems


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