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
Don’t Get Hung Up on Hanging Calipers
A household trick to save time — and brake hoses.
Tire Damage Assessment – ASE Practice Question (VIDEO)
Assessing tire damage in order to make a repair decision, which technician is correct with the right repair?
Mastering the Numbers – Part 2
Using your shop’s Cost of Doing Business (CODB) as a baseline for labor rates.
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SHOP STUFF
Auto care news and advice you can use.
Should You Replace That Damaged Plastic Intake Manifold?
Find out when plastic intakes go bad, and why you should or shouldn’t replace one.
Compression Testing | ASE Practice Questions (VIDEO)
All four cylinders are below specification by about the same amount. After performing a wet compression test, values remained unchanged. What could cause this condition?
When a Voltmeter Isn’t Enough (Video)
Many high-end scan tools come with a capable digital storage oscilloscope. Time to put that tool to work.
Which Is Faster: A Spark Plug Firing or a Fuel Injector Spraying? (VIDEO)
Did you know that a modern fuel injection system can fire off multiple sprays in the same time it takes for a spark to jump across a plug?
P0420/P0430—The #1 DTC in the Country
And the most misdiagnosed.
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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.
VIDEOS
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?
PSA: Be Safe With Carburetor Cleaner, Too
Is carb cleaner actually more dangerous than brake cleaner?
The Real Meanings Behind OBD-II Diagnostic Trouble Codes (VIDEO)
By breaking down the structures used to create DTCs, you can learn how to “decode” beyond the simple descriptions presented by a scanner.