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Article

Rotor routine -- Rotor guidelines and OE developments

Brake complaints fall into three general categories: stopping issues, noise issues and vibration issues. While rotor problems can contribute to all three, vibration is the main culprit. Pulsation is due to either thickness variation or lateral runout.

Article

Rotor routine -- Rotor guidelines and OE developments

Rotor routine -- Rotor guidelines and OE developments

Brake complaints fall into three general categories: stopping issues, noise issues and vibration issues. While rotor problems can contribute to all three, vibration is the main culprit. Pulsation is due to either thickness variation or lateral runout.

Article

Tool Review: Bosch cordless impact wrenches

Today’s pro-level cordless impact wrenches feature vastly improved designs, rugged construction...

Air (pneumatic) impact wrenches are a mainstay of any shop. However, there are times (and those times are frequent) when dragging an air hose around isn’t ideal, especially when working in a confined area, or where the air hose (straight or coiled) can become entangled or pose a tripping hazard, or when you’re concerned about dragging an air hose over a painted surface.

Article

Upgrading LS rocker arm trunnions: A necessary fix for an LS weak link

Upgrading LS rocker arm trunnions: A necessary fix for an LS weak link

Highly regarded as “today’s” hot smallblock Chevy, GM’s family of LS engines represents a real milestone in performance V8 engine design. Even straight out of the factory, the LS (in all of its variants) produces decent power. The oiling and sealing systems represent drastic improvements over the early smallblock design, and they make great platforms for additional aftermarket power enhancements.

Article

Maintaining Focus: Common electrical problems with the Ford Focus

Abnormal instrument cluster operation on the Ford Focus is common.

Every vehicle has it fans and its detractors, and every vehicle has its strong points and weak points. While the Ford Focus is no exception, it does soldier on and remains a popular vehicle. That means it will likely come into your shop with its own set of problems. Let’s take the shock out of a few electrical problems in this popular vehicle. While not limited to a single model year, you can find these problems on 2000 and newer vehicles. Our photo car is a 2000 Focus Wagon.

Article

Maximizing GDI system efficiency

Complete GDI systems include high-pressure valve/injectors, high  pressure pump, fuel pressure...

Engine management systems can be divided into two main categories: manifold or port injection, and gasoline direct injection (GDI) systems. These systems have many similarities, and major differences between the systems are primarily fuel delivery and control and operating pressures.

Article

Tracing poor engine idle

A faulty IAC (idle air control) will definitely cause idle issues. A  Ford Ranger example is...

Engine idle issues can obviously involve a wide range of potential faults, involving ignition, fuel, vacuum and mechanical problems. In this article, we’ll discuss a variety of potential sources that result in poor engine idle characteristics. (See the list at right for potential causes.).

Article

Scoping out ABS wheel speed sensors: What could go wrong?

his bearing, wheel speed sensor and hub assembly is typical of the current trend. Exercise care...

Anti-lock brake systems. Traction control. Electronic stability control. Great safety enhancements, but none of them could exist without wheel speed sensors. Even variable assist power steering and variable ride height systems rely in part on information from the wheel speed sensors.