Shop Press

Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle.

From the creative minds at:

FEATURE STORY

Hot Off the Press

Brake booster valve – ASE practice questions (VIDEO)

Description A customer states the brake pedal falls slightly when the brakes are applied while starting the engine. Technician A says that a faulty brake booster check valve may be to blame. Technician B says this can be caused by a leaking brake booster diaphragm....

The final days (and cars) of AMC

In the last days of AMC, two employees brought a video camera into the Kenosha, Wisconsin plant to document the end of an era. Billy and Danny take a thorough tour of the old AMC buildings and production line, which was producing its last L-body Plymouth Horizons and...

What is a core charge?

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...

How do you inspect a serpentine belt for wear?

Performing a visual inspection of a car part is usually the first step in assessing its condition. In the case of the serpentine belt, any sign of physical damage to the belt means the belt should be replaced, and may indicate the need to more closely inspect the...

The importance of testing engine coolant (VIDEO)

How to test for blown fuses in a car or truck | Fast and easy methodDescription Dorman Training Center instructor Pete Meier explains why you should be testing engine coolant on vehicles in your bay. With a simple test strip, you can quickly check the coolant's health...

How to use a refractometer

I used to feel real dumb when I didn’t know what a tool was. After fixing things for a bit, I have come to learn that there are a lot of specialized tools and the only dumb thing is not learning about them. So when Dorman Trainer Pete Meier showed up recently with a...

Transfer cases: Married vs. divorced FAQ (VIDEO)

There is a paucity of divorced transfer cases fitted to vehicles traversing the roadways in 2024. In fact, some technicians—especially younger ones—aren’t even aware a setup beyond the married arrangement exists. If you’re unfamiliar with them, our own Technical...

TECHNICIAN CHALLENGE: The Mystery Box, Part 2

TECHNICIAN CHALLENGE: The Mystery Box, Part 2

TECHNICIAN CHALLENGE: The Mystery Box, Part 2 Description The Proving Grounds crew takes on another round The Mystery Box Challenge with new parts and a few new faces. Could you guess these auto parts simply by the way they feel? It’s more difficult than it...
Vehicle weights are increasing. Can your lifts handle it?

Vehicle weights are increasing. Can your lifts handle it?

Average vehicle weights in the United States have steadily increased since the mid 1980s, driven by sustained consumer demand for vehicles with more power, features, and room. Hybrid and electric vehicles can be especially heavy with their batteries and motors,...
The story of the very first reverse gear in an American car

The story of the very first reverse gear in an American car

Making a car go backwards was not the most important part of the automobile’s development, but it sure is important in its operation. In fact, if the average automobile enthusiast was to guess which American-built car had the first reverse gear, he or she would likely...