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

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Engine knock – ASE practice questions (VIDEO)

Description An engine exhibits a knocking noise. During a cylinder power balance test, the noise abates. Technician A says the noise is likely worn big-end bearings on the connecting rod. Technician B says the noise is likely piston slap. Who is correct?More ASE...

“Can I borrow a…”

I recall being very alarmed at how far the door spring traveled. As a teenager in my first job at a dealer, I was working on a small S-10 truck that needed door hinge pin bushings. I levered that door spring out of its perch with a slotted screwdriver like a goon and...

A visit to Elite JDM (VIDEO)

Description Recently we took a trip to Dorman Proving Grounds manager Nick D'Alessio’s personal shop, Elite JDM. While we were there, we shot some videos about some fascinating things we found in his shop. We decided to put those four videos together in a playlist for...

Oil leak – ASE practice questions (VIDEO)

Description Which of the following is LEAST LIKELY to cause an oil leak?A) Torn valve cover gasket B) Worn wrist pin bushings C) Worn rear main seal D) Worn piston ringsMore ASE Practice Questions

Low-mileage JDM automatics: Worthwhile or worthless? (VIDEO)

Description Nick and Lemmy check out a flex plate from an imported Japanese automatic transmission with very few miles under its belt. Even so, Nick explains why nobody really wants these transmissions or parts… and why many of them end up in the scrapyard.

How to test and fix a car USB charger (VIDEO)

by | May 2, 2023 | 1 comment

Description

Most late-model cars have a USB charging port for smartphones and other devices. In older vehicles, many owners have added USB charging capabilities with cigarette lighter adapters powered by accessory circuits. USB charge ports are used frequently, and today’s techs need to know how to test, diagnose, and repair these systems. This video gives an overview of tools, techniques, and common problems for customer cars. With the right equipment, you’ll be able to test USB ports for voltage and amperage, check cables for connection issues, and even simulate a load on the charging system. Not all USB charging components are created equally, and because most customers are mixing and matching devices from different manufacturers, the right tools and techniques become essential for troubleshooting. 

Related Videos

Dust Cap Tool Explained (VIDEO)

How many times have you seen a hub dust cap with ugly dents from a sloppy installation? A dust cap tool is a handy tool for installing caps on customer vehicles without damaging the cap's appearance.

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