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Voltage Drop Testing

Effective Voltage Drop Testing
— written and illustrated by Ralph Birnbaum
We are about to provide you with a simple, step-by-step process that will let you divide and conquer common automotive circuit problems. It is called a Voltage Drop Test, and it works! Voltage drop tests are an effective way to test an electrical circuit’s ability to deliver power to electrical loads.

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Find Electrical Shorts Faster

Find Electrical Shorts Faster

— written and illustrated by Ralph Birnbaum
Fuse-popping shorts in electrical circuits can be hard to locate. Younger techs have been known to incinerate a couple dozen fuses looking for a voltage short to ground, while the truly fearless among us simply install a fat jumper wire in place of the fuse, and follow the smoke from burning insulation. Neither approach will garner the "top troubleshooter" award.

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Air Lift Cooling System Fill Tool

Air Lift Cooling System Filler
— copy and photos by Ralph Birnbaum
Time to drain and refill that cooling system? Draining the coolant isn't too hard on most makes; but what about refilling? Purging all the air from the system during a refill can be difficult. Heater cores can trap enough air to recreate The Poseidon Adventure.

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Vehicle Serviceability

Serviceability is not a top priority for vehicle design teams, but it should be. Vehicle designers will surely read this article and remonstrate that there is no real issue here, and that modern computer-aided design makes vehicle repairs logical, efficient, and affordable. Any first year mechanic’s apprentice knows better.

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