Magazine Archives - Page 11 of 70 - UnderhoodService
Servicing Electronically Controlled Thermostats

When the heater circuit fails, most of the time it will create an open circuit.

Ford F-150: Lack Of Heat In Low Temperatures

This condition may be due to deposits from the engine coolant becoming trapped in the heater core.

Proper Procedures To Maximize Fastener Life

The right fasteners, installed the right way, can enhance the quality of any build.

Chasing The Perfect Combustion Event

The perfect internal combustion engine would put the exact amount of fuel and air into the combustion chamber.

Staying Current

The wide variety of relay configurations, applications and uses can make selection difficult.

Freeze Frame Diagnostics

Freeze frame data is a “snap shot” of when the code occurs of the specific sensor PIDs.

Diagnosing Crankshaft Position Sensors

Modern engines need to not only know the position of the crankshaft, but the position of the camshafts.

Belt Alignment Measurement

The first point of inspection is the belt. Listen for the most common noise: a chirping noise.

Gapping Spark Plugs

For modern fine-wire spark plugs, you should not measure the gap unless instructed by the manufacturer.

Be Careful When Replacing That Diesel Air Filter

Diesel engines have a certain level of differential pressure that needs to be maintained.

The Spin On Spun Bearings

A spun bearing is usually the end result of a chain of unfortunate events.

Turbo Tech: Smaller Engines Offer Diagnostic Opportunities

Many vehicle owners may not even know if their car or truck is turbocharged.