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
What’s Torque-to-Angle All About?
It’s like torquing a bolt, but with an extra twist.
Hybrid A/C Compressor Oil-ASE Practice Question (VIDEO)
On a hybrid vehicle’s air conditioning system that utilizes a high voltage electrical compressor, can only the oil specified by the vehicle manufacturer be used in the compressor or is PAG oil acceptable for use in an electric vehicle’s compressor?
Troubleshooting a “No A/C Compressor Engagement” Fault
Why a compressor clutch doesn’t engage, and tips to find the cause quickly.
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SHOP STUFF
Auto care news and advice you can use.
Use the Little Radiator—and Have Customers Do the Same
Cars have a backup cooling system—use it when the situation demands!
Check Engine Light On?
Grab a generic OBD-II scan tool and take these first steps to turn it off and keep it off.
Which Parts of a Tire Are Safe to Patch? The Answer Has Changed (VIDEO)
Patching a punctured tire is a common job, but are you up to date on the latest guidance for safe plug locations?
CDK Global Outage: The Aftermath.
How one dealership stayed open through the uncertainty of a cyberattack.
DIYers: Yes, You Can Handle a Window Regulator Replacement
Here are some tips to help get you started.
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SHOP STUFF
Auto care news and advice you can use.
It’s All About the Process
To reach a successful diagnostic conclusion, you have to follow the right diagnostic path.
The Other Way to Use a File that Many Mechanics Don’t Know (VIDEO)
Need a smooth finish on a part you’re cleaning up with a file? Lemmy shows how draw filing can achieve a clean result with a totally different method of holding a traditional file.
Commercials That Make Technicians and Dealers the Stars of the Show
Here are some outlandish—and not so outlandish—examples of mechanic and dealership TV commercials.
Store stuff in your glove box? Thank automobile pioneer Dorothy Levitt (VIDEO)
Ever wonder why virtually all cars and trucks have glove boxes? A visionary woman and her little book about driving changed in-vehicle storage over a hundred years ago.
Inside Global (Generic) OBD-II
You don’t need an expensive scan tool to diagnose the cause of an illuminated check engine light.
VIDEOS
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?