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

What are Frits? (And Why Does Almost Every Car Have Them?)

It’s a pretty safe bet that most younger techs haven’t heard of frits before. Not one single customer, ever, has come into your shop looking for some help with a frit problem. So while this article won’t help you turn bays faster or improve your diagnostic skills,...

Cat DTC Diagnosis (P0420) – ASE Practice Question (VIDEO)

Description Technician A and Technician B are discussing the troubleshooting procedure for a P0420 (Catalyst Efficiency Below Threshold) DTC. Technician A says that the presence of any other codes should be considered first before replacing the converter. Technician B...

What Shape Is a Piston?

At this late date, if you work in a standard automotive facility servicing late-model vehicles, it’s probably infrequently you even see—let alone think about—pistons. However, if you are in a rebuild shop, a race environment, or the antique space, seeing a set of...

Cabin Filters – ASE Practice Question (VIDEO)

Description Technician A says that cabin air filters protect the occupants from over 200 known contaminants found in a typical car’s passenger compartment. Technician B says that the cabin air filter protects the evaporator core from copper particles emitted by the...

Should You Replace That Damaged Plastic Intake Manifold?

It seems like plastic is everywhere under the hood of a modern car. You even have to remove a plastic cover to find the engine! But plastic and composite parts like distributor caps and ignition coil housings have been in use for over 100 years. In the 1970s,...

Politics Ain’t Politic

Red, blue, or green? You’ve pieced together the point of this article by now, no doubt. This will not be a piece that risks raising the hackles of those who are deeply political. That’s not because you’re encouraged to avoid the topic, but instead, to do what makes...

Belt Noise – ASE Practice Question (VIDEO)

Description Technician A says that "chirp" is the most common type of noise complaint customers bring to the shop. Technician B says that EPDM belts can be worn out yet pass a visual inspection. Who is correct?A) Technician AB) Technician BC) Both Technician A and BD)...

Read more from Peter F Meier

It’s All About the Process

It’s All About the Process

To reach a successful diagnostic conclusion, you have to follow the right diagnostic path.

The Misunderstood Ford 6.0

The Misunderstood Ford 6.0

Is the Ford 6.0-liter PowerStroke really worthy of its nickname, the “Sick-O?”

Diesel Engines and Racing

Diesel Engines and Racing

You may be surprised at how diesels have made a name for themselves in motorsports.

Do I Need a Tune-up?

Do I Need a Tune-up?

When a customer rolls into your shop and asks for a “tune-up,” what’s your first reaction?

Dead Battery? (Video)

Dead Battery? (Video)

Diagnosing the cause of a battery drain can be a challenge today.

Check Engine Light On?

Check Engine Light On?

Grab a generic OBD-II scan tool and take these first steps to turn it off and keep it off.

Inside Global (Generic) OBD-II

Inside Global (Generic) OBD-II

You don’t need an expensive scan tool to diagnose the cause of an illuminated check engine light.