Difficult Diagnostics: A Rough Running Toyota
Difficult repair-ability did not stop the owner of a Toyota from having serious engine repair done.

TPMS Diagnostic Strategy, Check
If you find a tire pressure sensor isn’t functioning, the natural assumption is the sensor is the problem, but is it?

The Humble Mechanic: Diagnosing Tiguan TPS Codes
Charles explains common throttle position sensor codes on a Volkswagen Tiguan.

Specialty Tools: Problem Solvers, Time Savers and Essentials
Investing in the right ones is an important decision for every technician.

Developing a Consistent Diagnostic Approach
What’s your approach to check engine light diagnosis? It’s your routine that defines your success.

A DTC, A Scope and Fundamental Electrical Knowledge
Something out of the ordinary was happening on a customer’s Ford Fusion, and it was time to scope it out.

TPMS Diagnostic Tips
The most significant leap forward has been the evolution of the dedicated TPMS tool.

An Analysis of Battery Voltage and Current Waveforms
Diagnosing an illuminated AWD malfunction warning lamp.

The Humble Mechanic: Replace a Leaking Valve Cover Gasket
Charles shows our technician readers how to replace a valve cover gasket to fix an oil leak.

Diesel Diagnostics: Intermittent Loss of Power on a VW
After scanning this VW Turbo Diesel, the vehicle revealed several codes, but no direct “smoking gun.”

Air Apparent
Air tool and equipment maintenance may not be obvious but ignore it and it’ll become apparent that you shouldn’t have.

TPMS Quick Tip: Managing Mercedes-Benz Inflation Assumptions
With almost all M-B vehicles, use an auto relearn procedure that is activated by menus in the instrument cluster.
