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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

P0318 diagnostic illustration showing wheel-speed sensors, ABS module and rough-road signal communication with the PCM

P0318 Code: How to Diagnose a Rough Road Sensor A Signal Circuit

The P0318 code indicates a fault involving the rough-road signal used to distinguish real engine misfires from crankshaft changes caused by uneven pavement.

How To Compression Test your Engine

If your car or truck has been running poorly and doesn't seem quite as peppy as it once did, it may be a good idea...

DTC P0135 – How To Service Your 02 Sensors

The P0135 Check engine light is a OBDII Trouble code informing you that there is a problem with one of your oxygen sensors. Your vehicle's...
Technician inspecting a gray Jeep Wrangler’s power-steering pump wiring beside a red Gladiator during recall repairs.

NHTSA Closes the Jeep Fire Probe, but 1.08 Million Vehicles Still Need Recall Repairs

NHTSA has closed its investigation into underhood fires involving Jeep Wranglers and Gladiators. That does not cancel the recall, remove the fire...

How To Use a Multimeter

Easily one of the most common questions we receive here at Pro Street is from customers or users wanting to know how to use...

How To Test a 420A Coil Pack

The DOHC 2.0 liter non turbo engine found in the 1995-1999 Mitsubishi Eclipse, Eagle Talon, and Dodge Neon is also known as the 420A engine....

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...

How To Test a Chevy Lumina MAF Sensor

The Chevy Lumina MAF Sensor is a vital part of your EFI system. This pass through mass air flow sensor reads information about the air as...