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Battery registration tells a vehicle’s charging system that a new 12-volt battery has been installed. Learn when registration or coding is required.

What Is Battery Registration, and Does Your Car Need It?

Battery registration is an electronic service procedure that tells a vehicle’s battery-management system that a new 12-volt battery has been installed.

How To Test a Mazda Protege MAF Sensor

Responsible for providing your Mazda ECU with the information it needs to properly operate your engine, the Mazda Protege MAF sensor can go bad...
Acura RSX green immobilizer key light flashing during a crank-no-start diagnosis

Why Is the Green Key Light Flashing on My Acura RSX?

A flashing green key light means your Acura RSX immobilizer cannot validate the ignition key. Learn how to test the key, fuses, receiver, relay and PCM communication.
bad ignition coil symptoms

7 Bad Ignition Coil Symptoms You Should Never Ignore

A modern engine depends on a strong ignition system to deliver power, fuel economy, and reliability. At the center of that system...

How To Find Ford Focus Misfire

Engine misfire is never a fun time, especially when you have it in your new Ford Focus. Although random engine misfire can be difficult...
Cutaway turbocharger diagram comparing a correct gravity-fed oil drain with a restricted return line and excessive crankcase pressure.

Why Is My Turbo Leaking Oil If the Seals Are Still Good?

A smoking turbo does not always need rebuilding. Restricted oil drainage, crankcase pressure and installation errors can force oil through a healthy turbo.

FAQ : The OBDII Trouble Code and You

OBD is the On-Board Diagnostics of your vehicle's ECU or PCM, capable of testing many different facets of your vehicle and engine to ensure...

LS1 ECU Pinout – 1999-2002

Rounding out our LS1 engine guide is our LS1 ECU pinout article for year ranges between 1999-2002 F-body vehicles. This ECU pinout is accurate...