Tech Tips: Using The Oscilloscope: Ignition Coils Excerpt from Delphi Training Course ‘Common OBD II Failure – The Misfire Monitor’  More»

Diagnostic Solutions: Ignition Coil Diagnostics Import Specialist Gary Goms says there are a variety of opinions about how to test ignition coils and ignition systems. The most basic method is measu...  More»

Perspectives: Are You ASE Certified? We congratulate the top scorers on the ASE certification tests for their understanding of the need to promote professionalism in our industry and thei...  More»

Pulling Codes: Hit or Miss? Part III In the first two articles, we looked at cranking compression and tailpipe analysis. We will now explore in-cylinder analysis. In order to have an unde...  More»

Diagnostic Dilemmas: 8 Simple Rules ... Many of the "Diagnostic Dilemmas" Gary Goms is called upon to solve aren't really all that complicated - but were caused by basic oversights and incor...  More»

Tech Tip: Dodge/Jeep Engine Misfire at Idle This bulletin applies to vehicles equipped with a 3.7L engine in which the customer may experience occasional engine misfire at idle. The malfunction ...  More»

Tech Tip: Mazda6 Engine Won't Start in Cold Weather In extremely cold weather (approximately -30 degrees C), a customer may experience an engine no start/no crank ­condition due to a frozen main relay a...  More»

Diagnostic Solutions: The Relationship Between PCMs, Sensors and Actuators Not that I recommend installing used PCMs, but I occasionally need a rebuildable core to replace a missing or badly damaged powertrain control module ...  More»

Learning Curves - How Education and Training Paved the Way for Tom Palermo's Career Path In November, Palermo was named the 2011 Best Tech of the Year recipient, a program sponsored by WIX Filters to recognize the skills and professionalis...  More»

Tech Feature: Troubleshooting Internal Errors - Solving Piston and Ring Breakdowns Rings that do not seal well during all four phases of the four-cycle combustion process can reduce an engine's power potential by 20, 30, 40 or more h...  More»

Pulling Codes: Hit or Miss? Part II This article will continue the work we started in the June 2011 Pulling Codes article. Part I outlined how we used relative compression to find a faul...  More»

Tech Tip: Ford Camshaft Tick Noise Some of the affected vehicles built Jan. 17, 2006 and later equipped with the 3.0L 4V Duratec engine with exhaust camshaft-driven water pumps may exhi...  More»

Tech Tip: Hyundai Has Check Engine Light On with Fuel System Lean Code The check engine light is on with a post catalyst fuel system lean code P2096, an oxygen (O2) sensor stuck lean B1/S2 code P2270, and an O2 sensor no ...  More»

Borescopes and Videoscopes - Coming to Our Senses As a professional technician, you have to rely on at least four, if not all five, of your senses to diagnose and repair vehicles. (For those of you wh...  More»

Pulling Codes: The Story of Codes P1128 and P1129 It was Saturday, June 11, 2011, at 8:30 in the morning. I had just arrived at an automotive repair facility located in Merriville, IN, owned by a very...  More»