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The Real Meanings Behind OBD-II Diagnostic Trouble Codes (VIDEO)

Description When the check engine light (CEL) pops up and your OBD-II scan tool displays a code, that’s only the start of the diagnostic process. By breaking down the structures used to create DTCs, you can learn how to “decode” beyond the simple descriptions...

What’s Torque-to-Angle All About?

Torque-to-angle, also known as angle-torque or torque-plus-angle, is a fastening method that combines an initial torque application with a subsequent angular rotation to achieve precise bolt or fastener tension. This technique ensures consistent clamping force,...

Hybrid A/C Compressor Oil-ASE Practice Question (VIDEO)

Description Technician A is working on a hybrid vehicle’s air conditioning system that utilizes a high voltage electrical compressor. Technician B says that only the oil specified by the vehicle manufacturer should be used in the compressor. Technician A says PAG oil...

Troubleshooting a “No A/C Compressor Engagement” Fault

As the weather warms, more and more of your customers will be switching over their HVAC control settings to “max A/C”. If the system doesn’t respond by blowing that refreshing cool air into their faces, they will show up at your door to find out why. When faced with...

Diesel Engines and Racing

Nearly every conceivable version of the internal combustion engine has made its way to the Indy 500. But it was a 1931 entry of a rather unusual type that made it into the record books as the first to complete the entire 500-mile race without a pit stop. That entry...

Recovering A/C Refrigerant-ASE Practice Question (VIDEO)

Description Technician A is preparing to recover the refrigerant from a customer’s vehicle. All of the below are steps he should take when performing this service EXCEPT: A) Test for the presence of sealant in the vehicle systemB) Identify the type of refrigerant the...

Drag racing semi-trucks (VIDEO)

Drag racing semi-trucks (VIDEO)

Hi, my name is Lemmy and I enjoy the inappropriate application of power. It’s the lighter side of our mutual profession, I feel. I’ve written before about keeping your mojo flowing if the biz of fixing stuff is wearing you down. Here’s another way to do that: watch...
Virgil Exner: The creator of Chrysler’s “forward look”

Virgil Exner: The creator of Chrysler’s “forward look”

I’m a sucker for the sleek, smooth, and aggressive look of late 1950’s automobiles. As such, I owe a debt of gratitude to one man: Virgil Exner. In the 50’s, Exner was the head of styling at Chrysler, and he spearheaded the “Forward Look” of their cars, a look that...
The Shop Press Automotive Paragon series: a recap

The Shop Press Automotive Paragon series: a recap

If you read Shop Press regularly you’ve noticed we’ve been running a series for the past couple of years. It’s called “Automotive Paragons,” and it’s a series where we look at automotive entrepreneurs, designers, and engineers who were exceptional, ahead of...
Book review: “Pump and Circumstance”

Book review: “Pump and Circumstance”

Recently I was organizing my books on a new bookshelf and came across one that I had almost forgotten about. I picked it up after seeing an exhibition called “See the USA: Automobile Travel and the American Landscape” at the Building Museum when I lived in D.C. The...
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...