Identifix Celebrates 20th Anniversary
Identifix, one of the nation’s premier sources of online and hotline diagnostic and repair information, recently announced that the company is celebrating 20 years of servicing independent repair shops.
Replacing Hubs with Wheel Speed Sensors
By Larry Carley, Technical Editor When engineers came up with the idea of putting the wheel speed sensor (WSS) and tone ring inside a sealed wheel bearing hub assembly, it seemed like a great idea. The sealed environment would help protect the sensor and make it less vulnerable to damage or contamination from the outside
Brake Tools: Brake Service Tools & Equipment
Brake work is one of the cornerstones of the automotive repair business, so it’s important to make sure you have the right tools and equipment to service the brakes on today’s vehicles. Most shops that do brake work have some type of brake fluid flushing and bleeding equipment (a power bleeder, vacuum bleeder or injector
Diagnostic Solutions: COP Ignition Systems
For a number of reasons, the trend of modern engine management technology is leaning toward using coil-on-plug (COP) ignition systems. One reason is that COP ignitions are very compact and are very adaptable to individual cylinder tuning. With the exception of a few designs that incorporate a driver or “module” into the COP assembly itself,
Tech Feature: Servicing Electrical Systems Requires Knowledge of Fundamentals
Electrical principles – voltage, amperage and resistance – can be described as cars passing along a pockmarked roadway. Voltage is represented by the vehicle’s speed, amperage is the number of vehicles on the road at the same time, and resistance is the potholes in the road’s surface.
2006 Ford Explorer Pointers
Photo 2). Another change for the 4.6L in 2006 is that it no longer uses a knock sensor. Both, the 4.0L and the 4.6L use a PCM-controlled heated PCV valve. The PCV valve on the 4.0L SOHC engine is located in the back of the left valve cover, mounted horizontally, and is well hidden from
Oxygen Sensors: Pulse Measurement
Watching an oxygen sensor output on an oscilloscope is like watching a sporting event on television. You get to see the action, but can do nothing about it as it happens. Sometimes you miss the action and want an instant replay. It was a bad call. You saw the interference. If the referee didn’t see
Scan Tools: Scan Tools Offer a Window Into a Vehicle’s Inner Workings
Scan Tools Offer a Window Into a Vehicle’s Inner Workings Larry Carley, Technical Editor [email protected] Technicians who attempt to make driveability or emissions repairs today without a scan tool are troubleshooting in the dark. A scan tool is absolutely essential because it provides a window into the inner workings of the engine management and onboard
Wheel Bearing Hub Unit Q & A
Can I use an impact wrench to remove or install a wheel bearing hub unit? While it may appear to be easier to use an impact wrench, it is not recommended. We recommend the use of a certified, calibrated torque wrench. Impact wrenches can damage the wheel speed sensor.
Tech Tip: Engine Analyzers Can Diagnose a Wide Variety of Engine Performance Problems
An emissions analyzer is one of the most useful pieces of diagnostic equipment you can own. By revealing the exact composition of the exhaust gases that are coming out of the engine, you can see if the fuel mixture is running rich or lean, and if a misfire is ignition, compression or fuel related.