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Looking for help with your vehicle? Do you see the dreaded check engine light on? have a problem with your car or truck and need a find a DIY guide? Our collection of How To articles can help you save money and time and get back on the road. No matter what issues in your vehicle you can find the how to tutorial to help you.
Whether you car problems are simple or complex, our guides are here to help. With just a digital multimeter at your side, you can test and diagnose most of your car issues with our How To articles. One of the other tools that is a must have when you want to fix a car yourself is the OBDII scan tool.
These tools quickly connect to your OBDII vehicle to read the Diagnostic Trouble Codes that are stored in your engine computer. Need a How To guide but can't find it in our archive? Leave us a comment or message us and let us know, we'll be glad to help!

Popular FAQ

California gas station showing regular gasoline at $6.40 per gallon as statewide fuel prices approach a record high in October 2026.

California Gas Prices Near Record High as Drivers Face $6.40 a Gallon

California regular gasoline has climbed to roughly $6.40 per gallon, putting the statewide average within a few cents of the all-time record as crude-oil costs, refinery constraints and the state's isolated fuel market pressure drivers.

How To Replace a Ford Fusion Oxygen Sensor

The upstream 02 sensor in your 2.5 liter Ford Fusion is a vital part of your engine system. Your primary Fusion Oxygen...
Multimeter testing a shared five-volt sensor reference circuit connected to several engine sensors

How to Diagnose a Shared 5-Volt Reference Circuit

One failed sensor can pull down a shared 5-volt reference circuit and make several unrelated systems report trouble at the same time....
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.

How To Test a Chevy Cavalier MAP Sensor

The Chevy Cavalier MAP Sensor is a barometric pressure sensor that's designed to deliver information about the air coming into your engine. This MAP sensor...

Lube Job – Top 5 Reasons to change oil

Engine oil is the lifeblood of your vehicle. It plays an important role in keeping your engine running and top condition. Not only does engine oil...

How To Test a Ford Explorer Blower Motor Switch

It's never a good time when the climate control unit in your Ford Explorer stops working. When your Explorer air vents don't blow air,...

K Series Transmission Differences

It wasn't so long ago that the i-VTEC K series of engines from Honda was more bleeding edge than cutting edge for most engine...