video Archives - Page 7 of 10 - UnderhoodService
VIDEO: Fuel Pump Voltage; Different Numbers On Different Tools?

Andrew Markel discusses the current used to drive fuel pumps, and how measuring it with a suite of diagnostic tools can determine the component’s health. Sponsored by Auto Value and Bumper to Bumper.

VIDEO: ECM Alternator Regulation; No More Full Field Testing

Andrew Markel explains how modern alternators are designed to have their loads regulated by the ECM, eliminating the need for full field testing. Sponsored by Auto Value and Bumper to Bumper.

VIDEO: Checking Battery Health Before Module Programming

Andrew Markel discusses programming modules on a vehicle, and the importance of checking the health of the battery before performing the procedure. Sponsored by Nissan.

VIDEO: Can Wiper Performance Interfere With Lane Departure?

Andrew Markel shows why streak-free wiper blades and a clean windshield are essential to the operation of such advanced safety systems as the lane departure warning. Sponsored by Nissan.

VIDEO: Oil Life Monitors On GM Vehicles

Andrew Markel explores GM’s specifications for oil life monitors and how they may alert the driver to change the oil at an unexpected time. Sponsored by MAHLE.

VIDEO: Negative Fuel Trim And Fuel Economy

Andrew Markel introduces a case study where a 2004 Chevrolet Impala has no codes, but is getting bad fuel economy. Sponsored by ProDemand from Mitchell1.

VIDEO: Head Lift On Production Engines

Andrew Markel explores the damaging phenomenon known as “head lift” appearing in production engines, and how proper maintenance can keep it under control. Sponsored by Auto Value and Bumper to Bumper.

VIDEO: Worn Battery Cables Can Cause Driveability Issues

Can a battery cause a driveability problem? Andrew Markel shows how worn battery cables can cause a voltage drop, damaging the battery and vehicle modules. Sponsored by Auto Value and Bumper to Bumper.

VIDEO: Diagnosing The Oil Control Valve

Andrew Markel details a case study involving a Honda Accord whose valvetrain displayed a timing malfunction. Sponsored by ProDemand from Mitchell1.

VIDEO: Air Filters And Mass Air Flow Sensor Contamination

Andrew Markel explains how a failing air filter can cause the contamination of the mass air flow sensor. Sponsored by Auto Value and Bumper to Bumper.

VIDEO: Service Information From Free Sources

Andrew Markel explains how service information from an outside source may create issues in your shop. Sponsored by ProDemand from Mitchell1.

VIDEO: Ford And Chrysler Oil Specifications

Andrew Markel discusses oil specification and weight, specifically those issued by Ford and Chrysler for their vehicles. Sponsored by Auto Value and Bumper to Bumper.