Electrical Archives - Page 52 of 55 - UnderhoodService
40-Year-Old Volvo

Starring at an auto show near you, it’s “The 40-Year-Old Volvo,” a tale of a 1966 1800 that just keeps running, and running, and running. . . By Debbie Briggs, Contributing Writer When Irvin Gordon bought his sporty red 1966 Volvo 1800, or P1800 as it’s known in Europe, on June 30, 1966, he had

Tech Feature: Laser Ignition Technology

Since the earliest days of the internal combustion engine, spark plugs have provided the ignition source for the air/fuel mixture. Over the years, spark plugs have gotten smaller, and the use of exotic metals in their electrodes has extended plug life to 100,000 miles or more. But spark plugs still have a conductive center electrode

Avoiding Those Hi-Tech Returns

One of the more common complaints these days from jobbers and retailers when dealing with electronic powertrain control modules (ECMs/PCMs) is the relatively high number of defective returns, exchanges or warranty claims demanded by repair shops. Yet, of all electronic parts that come back defective, ECMs tend to be the ones most often misdiagnosed. This

Forum Junkies: The Do’s and Don’ts of Netiquette

A web forum or internet message board can be a great thing. Just imagine like-minded people coming together to discuss problems and solutions on the internet. But, sometimes it is like a bar without any alcohol, and some patrons manage to talk loudly and become “know it alls.” Web forums can be a powerful tool

Tech Feature: Performance Modifications…Getting a ‘Handle’ on Your Customers’ Tuning Needs

The sport compact car market is hotter than ever. The market has moved beyond the simple bolt-ons such as wheels, tires, brake rotors and spoilers. It’s not unusual today to see sport compact engines producing upward of 400 horsepower on the street. With so much power under the hood, the challenge is getting the horsepower

Rotating Electric Update

Question: There is a lot of talk in the industry regarding returns on non-defective parts. So, how can repair shops and technicians reduce the number of warranty returns on rotating electrical parts? Answer: Misdiagnosis of starting and charging problems is the main reason many starters and alternators are returned. The issue isn’t the quality of

Tire Pressure Monitoring Systems Present a New Service Opportunity

Changing technology always brings with it a need for new tools, and today’s new Tire Pressure Monitoring Systems (TPMS) are no exception. In 2000, Congress passed legislation called the TREAD (Transportation Recall Enhancement, Accountability and Documentation) Act in response to tire failures that were causing SUV rollovers. Many of these tire failures were blamed on

Wheel Balancing: Making a Smart Investment in a Wheel Balancer

When you consider that only 1/4-ounce of wheel imbalance can produce a noticeable vibration on a vehicle, it’s easy to understand why it’s so important to have a wheel balancer that is both accurate and easy to use. Many balancers in today’s marketplace are capable of balancing a wheel to within a few hundredths of

Battery Charging: All Charged Up!

A battery charger is something every shop should own, and most do. But battery technology has changed in recent years. Battery chargers that were designed for older conventional lead acid batteries (called “flooded” cell batteries because the cells are filled with liquid electrolyte) may not be the best choice for newer batteries with absorbent glass

Tire Tech

Coupled Forces Why using less weight is not a shortcut In our July issue on page 26, the article titled “Less Weight, Great Balance” (or at www.brakeandfrontend.com) answered a lot of questions, but it also brought up some new ones. The article was on the new technology that many new balancers are featuring that can

High-Performance Brake Pads

Friction and Fiction “I would like a more aggressive or high-performance brake pad.” If you work at a typical shop you will hear this statement at least once a week. It is a complex request that requires a line of questioning to flush out what the customer wants, needs and expects. “Aggressive”, “high performance” and

Fundamentals of Electrical System Diagnosis

Electrical principles, like voltage, amperage and resistance, can be described as cars passing along the roadway. Voltage would be the vehicle’s speed, amperage would be the number of vehicles on the road at the same time, and resistance would be the potholes in the road’s surface. Basically, electricity is a supply of atoms with an