VIDEO: Checking The Voltage On A Fuel Pump
Andrew Markel explains how modern vehicles have pressure sensors that send out a voltage signal, and how a diagnosis can be made by measuring the signals with a scope.
Friction And Formulations
Friction is the force resisting the relative motion of elements sliding against each other. In the case of cars and trucks, it is the brake pads pushing against a rotor that changes kinetic energy into heat.
Turbocharging: Managing Pressure In The PCV System
Crankcase vapors are routed through the positive crankcase valve (PCV). The PCV valve is a simple spring-loaded valve with a sliding pintle inside. The system allows the vapors to be siphoned into the engine using engine vacuum.
VIDEO: Why Are There Certain Coolants For Certain Vehicles?
Andrew Markel explains how coolant is not meant to be mixed or switched. There are certain coolants for certain vehicles that must be used for long engine and gasket life.
Electronic Brake Pad Wear Sensor Diagnostics
Electronic brake pad wear sensors can be found on a variety of vehicles, including domestics like Cadillac and Chevy. Also, brake pad wear sensors can be found on BMW, Mercedes Benz and Audi vehicles.
VIDEO: Power Steering Pump Leak Diagnostics
Andrew Markel discusses the power steering pump, and how to determine if the pump or the rack needs replaced when fluid is visible.
VIDEO: Headlight Maintenance Opportunities
Andrew Markel discusses headlight service opportunities for the fall and winter seasons, including solutions for lights that are cloudy or dim.
VIDEO: Finding Resistive Values In Service Information
Andrew Markel explains how having access to the right service information can help you easily find the resistive values of certain components. Sponsored by ProDemand from Mitchell1.
VIDEO: Brake Pads And Tribology
Andrew Markel discusses tribology, the study of friction, and how different materials in brake pads react with brake rotors.
VIDEO: Extending Fuel Pump Life
Andrew Markel discusses cleaning the fuel tank and how it can improve the life of the fuel pump.
VIDEO: Slow Oxygen Sensor Preventing Secondary Air Monitor Reset
Andrew Markel explains how a non-resetting secondary air monitor required the use of crowd-sourced repair information when techs were led down a rabbit hole.
VIDEO: Using Airflow To Sell Cabin Air Filters
Andrew Markel introduces an inexpensive tool that can assist in selling cabin air filter replacements.
