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Serpentine Drive Belts Inspections

While a serpentine belt can look good to the naked eye, it’s critical to use all of your senses to determine its condition.

Identifying and Servicing Intelligent Cooling Systems

With engines increasing performance in terms of compression ratio and combustion temperatures, cooling systems needed to enter into the fuel injection age. What is replacing the conventional water pump and thermostat are electronic thermostats and electric water pumps.

radiator, thermostat, water pump
Diagnostic Strategies for Start/Stop Systems

This function of the power management system uses several modules to decide when the engine needs to stop and start.

start/stop systems
What’s Behind that Wheel Bearing Noise?

The classic symptom of a bad wheel bearing is typically a cyclic chirping, squealing or growling noise.

wheel bearing noise and diagnosis
Wheel Speed Sensor Diagnostics

Understanding the criteria setting the codes and how the electrical circuit can cause that code is critical.

Wheel speed sensor wiring diagram
Understanding Fuel Trim Theory and Operation

The modern engine measures two things extremely well, the amount of air going into the combustion chamber with the MAF sensor, and the byproducts that are generated by the combustion event with the oxygen sensor. These measurements allow the engine’s computer to put the right amount of fuel and spark into the cylinder to give the most efficient and cleanest combustion event.

Top EVAP Tips When Replacing Fuel Pumps

Nothing is worse that an EVAP code after a fuel pump has been replaced. Discovering that the tank needs to be dropped again to address a problem can kill productivity and profitability. The following tips can help you avoid comebacks and having to drop the fuel tank for a second time.

Test, Bleed, Flush: How Can You Protect Your Customer’s Brake System?

Visual inspection of the fluid can be extremely misleading. The color of brake fluid can vary from clear to shades of blue. Even if the brake fluid is discolored, it might still meet the system’s performance requirements.

Measuring Pedals and Pads

On a mechanical level, it’s easy to understand how brakes work. We all understand that brake fluid transfers force from one hydraulic component to another. But, how does this apply to how a brake pedal feels?

Direct Fuel Injection Diagnostics

Direct injection is becoming standard on more and more late-model vehicles, and while these systems can be a diagnostic challenge, with the right foundation, problems can be solved profitably.