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Using voltage to locate electrical faults

Locating the cause of an electrical fault can be a challenge even for the most experienced professional. I’m not referring to open circuits or even short circuits. These are relatively easy to find. In either case, the component, or load, won’t work. But the most...

How do you handle billing shop supplies?

When I first began writing service at an indie auto repair shop, one line item on the bill was “shop supplies.” We tacked on some percentage of the bill, capping at $19.88. Shows you how long ago that was! Customers would ask about it, and many were angry about the...

Tool Review: FNIRSI DSO152 Oscilloscope

Disclaimer: I purchased this tool at full retail price. In fact, I actually purchased two so I could try out the version with a high-voltage lead.If you’ve met my fellow Shop Press contrib Pete, seen his videos, taken his classes, or read his articles, you’ll know...

Making custom coiled wire is easier than you think (VIDEO)

Description Coiled wire is a smart idea for adding service loops or mechanical strain relief on automotive electrical jobs or other projects. In three easy steps, you can make your own coiled wire sections for all kinds of applications.

Testing Battery State of Charge – ASE Practice Question (VIDEO)

Technicians discuss battery testing, one says open circuit voltage of less than 10.5 volts indicates a bad battery, while the other says that a reading of 12.5 volts indicates an 80% state of charge. Who is correct?

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SHOP STUFF

Auto care news and advice you can use.

Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)

Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)

Technician A and Technician B are discussing ways to use fuel trim as a troubleshooting aid. Technician A says that fuel trims that are correcting for a lean condition at high RPM and load conditions indicates a problem in fuel delivery. Technician B says that this condition is caused by a vacuum leak.

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