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A Crash Course on Modern Impact Sensors

We’ve come a long way since the automotive impact detector was developed decades ago. One clever design used a metal ball in a tube that would move to complete a circuit during a collision. This rudimentary accelerometer proved that the idea of detecting a collision...

Alignment and Inner Tie Rod Play – ASE Practice Question (VIDEO)

Description A vehicle equipped with a MacPherson strut suspension is in the shop for new tires and an alignment. The technician notes play in the left-side inner tie rod end. What should the technician tell the customer?A) The play will not affect the vehicle's...

Put the Second Floor to Work

Paying the mortgage (or the rent) on the bricks—the actual shop itself—is an expense. (A fixed cost, if you want to be particular.) But that building does more than keep your tools and techs dry. It provides room to work and house equipment. And if you’re like most...

How Does Regenerative Braking Affect Brake Wear?

We’ve come a long way since the days of rubbing wooden blocks against a wagon wheel to slow down a carriage. Modern braking systems are amazingly effective at halting several thousand pounds in a safe, controlled manner. The most common automotive braking technique is...

Don’t Overlook the Elementary

Today’s article is one borne from experiences. Exasperating experiences, no less. All novice mechaniclets are taught engines need fuel, air, spark, and compression to run. This is true, but we often take those for granted, and diagnosing even one vehicle with a basic...

ADAS Alignment and Calibration – ASE Practice Question (VIDEO)

Description Technician A says that the thrust angle must be maintained at zero degrees when performing an alignment on many vehicles equipped with certain ADAS systems (like lane departure warning). Technician B says that the steering angle sensor must be properly...

Modern Power Window Switches: Smarter than You’d Think

Modern Power Window Switches: Smarter than You’d Think

by | Feb 12, 2026

When was the last time you rolled down the power windows in an older car or truck? I’m talking at least pre-2000. The older, the better. As a passenger, you’ll find that every door has a mix of buttons, switches, locks, and handles to mess around with, plus maybe a...
What are rear fog lights, and when should you use them?

What are rear fog lights, and when should you use them?

by | Jan 23, 2025

If you’re a vehicle owner or auto repair professional in the United States, odds are that you haven’t seen (or even used) rear fog lights on a vehicle. The vast majority of vehicles sold in the US do not include them, and in some cases, the feature is disabled or the...
What is a core charge?

What is a core charge?

by | Apr 2, 2024

The article title is a question I asked when I was a young counterman, and most of you oldtimer mechanics and parts people of course know the story: the core charge is a way to be sure the smoked part makes its way back to the parts counter. A core charge is a deposit...
Watch this video on the invention of the Ford V-8 engine

Watch this video on the invention of the Ford V-8 engine

by | Feb 29, 2024

If you enjoy pioneering developments in automobile history, this video on the development of Ford’s V8 engine is a must-watch. It’s a bit on the long side (a little over an hour), but it’s well worth your time to fully appreciate this revolutionary success in Ford—and...