Tech Shop Articles Archives - UnderhoodService
Soldering Irons

Professional Tools. Professional Facts. You Ask The Questions, We Get The Answers.

Driveline System Balance Adjustment Using an Electronic Vibration Analyzer

2005 Saturn Truck VUE AWD V6 3.5L VIN 4

Snap Test: MAF Sensor Diagnostics

You’d think a service light would be the first indicator of a mass air flow (MAF) sensor problem, but there are times a problem develops with the MAF and no service light comes on. Scott “Gonzo” Weaver explains how poor idle, loss of performance, sluggish performance and even stalling are all associated with a failing MAF sensor.

Tooling Up For The Diagnostic Process

Automotive trainer John Forro advocates knowing your tooling needs and developing a strong relationship with those tools. Knowing a tool’s capabilities and limitations will help you advance your diagnostic process.

Scope Accessories You Can’t Live Without

If you’re buying a new scope or upgrading one you already own, here are some accessories that can make you more productive.

Top 5 Tools: Craig Walter, Don’s Auto Ade

Hunter, Bartec and Coats products make Craig’s favorite tool list.

Top 5 Tools: Robert Stone, Tom’s Auto Service

Snap-on and Victor tools top Robert’s top tool list.

What to Look For When Buying a Scope

If you’re in the market for a new scope, Underhood Service Editor Andrew Markel has provided his recommendations on how you can get the most bang for your diagnostic dollar.

Pulling Codes: O2 Sensor Heater Circuit Malfunction

Pulling a P0135 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) code means you’re dealing with a possible oxygen sensor heater element and/or associated components in this circuit. This article provides a game plan for diagnosing a vehicle with this code.

Pulling Codes: Advanced Misfire and Fuel Trim Analysis, Part 2

Contributing writer Carlton Banks continues with his series on Advanced Misfire and Fuel Trim Analysis, using fuel trims and oxygen sensor behavior to determine if the misfire activity is ignition, engine mechanical or fuel related. This article focuses on fuel-related misfires.

2014 TechShop – Equipment, Tools & Supplies Directory and Buyer’s Guide Hits the Streets – and the Web

TechShop’s annual tool and equipment resource can be found online and in our January issue.

Top 5 Tools: Dan Uricoli, Dan’s Auto Repair & Tire, Margate, FL

LED flashlights and a code reader top Dan’s favorite tool list.