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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!

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No. 6 Porsche 963 leading the BMW M Hybrid V8 during the 2026 Petit Le Mans at Road Atlanta

Porsche Completes a Historic American Endurance Sweep at Petit Le Mans

Porsche Penske Motorsport won the 2026 Petit Le Mans with the 963, completing an unprecedented sweep of Daytona, Sebring and Road Atlanta.

FAQ – LS7 Specifications

The engine that may have really kicked off the success of the LS engine, the LS7 is one of the most powerful small block...
White-and-red Porsche 911 GT3 Cup MR 30 beside a Cayman GT4 RS Clubsport MR 30 at a racing circuit.

Manthey’s Porsche 911 GT3 Cup MR 30 Gets a 4.2-Liter Flat-Six

Manthey’s Porsche 911 GT3 Cup MR 30 pairs a 552-hp, 4.2-liter flat-six with revised cooling, aerodynamics and suspension. Its companion Cayman MR 30 follows a different path, improving an existing engine package through lighter components and chassis development.

How To Test a Infiniti EX35 IVT Solenoid

The intake variable timing mechanism in your 3.5 liter Infiniti EX35 is controlled by the EX35 IVT Solenoid. These solenoids are also found in other VQ35...
LS1 engine block showing numbered main caps with directional arrows facing the front of the engine

LS1 Main Cap Orientation: Which Way Do the Main Caps Face?

LS1 main caps are identified by location and direction. Learn what the numbers mean, which way the main-cap arrows point, and how the caps are positioned before seating them in the block.
Diesel pickup being fueled from a red-dyed diesel pump as federal officials consider expanded highway use

Red-Dyed Diesel Could Get Wider Road Use—but It Won’t Fix Fuel Prices

The White House may expand access to red-dyed diesel as fuel prices surge. Here’s what drivers could save—and why it won’t fix diesel supply.

How To Upgrade a Mustang MAF

Upgrading your Mass Air Flow Meter can be one of the easiest and best bang for buck modifications in any vehicle, naturally aspirated or...
Acura RSX high-idle diagnosis showing throttle body, vacuum leak, IACV and scan-tool data

What Causes an Acura RSX to Idle Too High?

A warm Acura RSX should not remain at 1,500 or 2,000 RPM. Diagnose vacuum leaks, throttle operation, IACV control and PCM sensor data before adjusting anything.