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
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.
ABOUT SHOP PRESS
Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle. With interesting stories from around the world, features on creative people and solutions, and all kinds of other stuff that’ll make you use your mind and your hands.
SHOP STUFF
Auto care news and advice you can use.
Chrome Overload: GM’s “Mistake of ’58”
What happens when chrome goes too far?
Shop Profile: Hansville Repair
71 years of success started at the end of the road.
Do You Know the Right Way to Use Rasps and Files? (VIDEO)
Any technician will have a few files in the toolbox for material removal jobs. But are you using these tools with the correct technique?
Mastering the Numbers
A practical approach to auto repair shop management.
Don’t Overlook This Step When Servicing Brakes (VIDEO)
A brake service job isn’t complete unless the reservoir cap’s diaphragm has been pushed back into place. This simple step is easy to forget, but it helps to reduce brake fluid contamination and ensure proper system function.
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SHOP STUFF
Auto care news and advice you can use.
Mastering the Numbers – Part 2
Using your shop’s Cost of Doing Business (CODB) as a baseline for labor rates.
Tariff Talk: A Look Backwards at The Chicken Tax
Lighten the mood at the next cocktail party you attend.
Watch This Video on the Inventor Who Put Lead in Gasoline
He also synthesized chlorofluorocarbons (CFCs).
Why Some Vehicles Have More Than One Spin-on Filter (VIDEO)
Ever spot what appears to be a second oil filter under a vehicle? Lemmy and Nick discuss the advantages of spin-on transmission filters for fluid protection and service.
Basic Brake Fluid Testers Are Far More Sophisticated Than You’d Expect
Peering inside the inner workings of a deceptively complex tool
VIDEOS
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.