Lemmy explains why this basic task always comes before removing the positive cable to help you understand the theory behind the practice.
Why We Take the Negative Battery Cable off First and Put It on Last (VIDEO)
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HOT OFF THE PRESS
Decreasing Circuit Resistance – ASE Practice Question (VIDEO)
When the resistance of a circuit is decreased and voltage remains constant, what happens to current?
Colin Chapman: The Philosopher of Motion (Part 2)
This British engineer changed racing forever by making cars lighter, not more powerful.
How Often Should You Really Flush Coolant? (VIDEO)
How do you know when it’s time to flush coolant? Technicians may have different views on the subject, but Dorman Training Center instructor Pete Meier explains how using a test strip at every service is a surefire way to get an accurate picture of the coolant’s health.
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SHOP STUFF
Auto care news and advice you can use.
Diagnosing a Prius Coolant Leak (VIDEO)
Learn how to pinpoint common Prius coolant leak sources with step-by-step diagnostic tips from the shop floor.
Add or Delete These Simple Parts to Help Customers Save Money
Use it or lose it. Looking for an easy way to win over your customers that they’ll enjoy every time they drive? Look at their vehicles from a hypermiler’s perspective.
Are You Properly Checking Hub Bearings For Wear? (VIDEO)
Pete Meier explains how a dial indicator is necessary for a true wear check.
Efficiency is the Name of the Game
Four proven ways to run a tighter ship at your shop.
Misfire Cause–ASE Practice Questions (VIDEO)
Technician A is diagnosing a misfire. He states that a misfire is caused by a fault in the ignition system and that new plugs and coils will repair the problem. Technician B says that a misfire is detected when the ECM detects a variation in crankshaft speed.
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SHOP STUFF
Auto care news and advice you can use.
How Does Regenerative Braking Affect Brake Wear?
Regenerative systems slow the vehicle electrically, but the reduced use of friction brakes creates new maintenance challenges.
Why Wheel Fastener Torque Matters More Than You Think (VIDEO)
If you’re still using torque sticks and impact power to install lug nuts and lug bolts, it’s time to reconsider.
A History of the U.S. Presidential State Car (Part 1)
The commander-in-chief’s road transportation, from Pierce-Arrow cars to the Kennedy Lincoln Continental.
Dead Battery? (Video)
Diagnosing the cause of a battery drain can be a challenge today.
Check Engine Light On?
Grab a generic OBD-II scan tool and take these first steps to turn it off and keep it off.
VIDEOS
Troubleshooting a “No A/C Compressor Engagement” Fault
Why a compressor clutch doesn’t engage, and tips to find the cause quickly.
Is the Oil Change Interval in a Vehicle’s Owner’s Manual Always the Right Choice? (VIDEO)
Pete Meier explains how vehicle usage and oil/filter quality should affect your maintenance schedules.
Diesel Engines and Racing
You may be surprised at how diesels have made a name for themselves in motorsports.