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Tech Tip: Steering Position and Yaw

The Electronic Stability Control (ESC) program uses the Anti-Lock Brake System (ABS) and Electronic Throttle Control (ETC) to maintain vehicle stability in a cornering maneuver. The ESC program requires the communication between the Engine Control Module (ECM) and ABS controller. This communication takes place on the Controlled Area Network (CAN) buss of the vehicle. The program uses input from the following sensors: steering wheel position, throttle pedal position, throttle position, engine speed, brake switch, wheel speed, yaw and ….

Steering Position and Yaw

Driving skills and Electronic Stability Control One of the first things a novice driver asks is: “Do I turn into the skid or away from it?” With Electronic Stability Control, this decision is made for us. When a vehicle begins to skid during a cornering maneuver, the skilled driver steers into the direction of the

Tech Update: Top 5 TPMS Questions

From professional and college football down to youth-league soccer, everyone (including TechShop!) has a “Top Something-or-other” list. Why should the tire industry be different? Over the last year or so, Tire Rack has been conducting an informal and unscientific survey of its customers regarding the reoccurrence of issues dealing with tire pressure monitoring systems. Thanks

Tech Tip: Evolving Ignition Control Systems

The key to diagnosing many cranking, no-start and stalling problems found on the late-model import is to understand how the crankshaft and camshaft position sensors function and what their mechanical relationship is to each other. During the past 30 years, ignition control systems have evolved from distributor-type, to distributorless, to coil-on-plug ignition systems. Similarly, fuel injection systems have ….

Evolving Ignition Control Systems

Require Knowledge of Crankshaft & Camshaft Sensor Function

Industry Review: Bosch Celebrates 30th Anniversary of the Pioneering Anti-Lock Brake System

Bosch is celebrating the 30th anniversary of the pioneering automotive anti-lock braking system (ABS), a landmark contribution to driving safety. Bosch first introduced its first system in 1978. Since Bosch introduced electronically controlled ABS to the automotive market, this groundbreaking technology has become the basis for all modern brake regulating systems. Today, nearly 75 percent

Engine Tuning & Chassis Upgrades

When car manufacturers come out with a new engine design, some car enthusiasts eye the new technology from a perspective of how to squeeze more performance out of it. The smaller displacement engines that are turbocharged or supercharged tend to be the most likely chosen because of their power-to-weight ratio. When Saab introduced a turbocharged

Tech Feature: Air Springs and Suspensions

Passenger car air helper springs have been around since the early fifties. Fifty years ago (1958 model year), GM introduced air suspension as an option for all of its passenger cars. It featured a single cylinder belt driven compressor from Bendix Westinghouse. Goodyear supplied its rolling lobe and sleeve type Super-Cushion air springs. The option lasted for two model years. In the late 1960s, Mercedes Benz applied air suspension to their SL sedans and limousines. Air springs returned in ….

Tech Tip: ‘Simple’ Tire Rotations with TPMS Can Prove Tricky

Bias. Everyone, whether it is politics, labor, religion, food, whatever, has a bias. Mine is government overregulation in the name of safety. It is with that built-in opinion that I will attempt to explain what tiremakers, TPMS tool manufacturers and sensor makers want you to know about tire rotation and TPMS. The other day my left rear tire went down in an instant thanks to a ….

Tech Feature: Catalytic Converter Diagnosis

The catalytic converter is probably the most important emission control device on a vehicle because it cleans up the pollutants in the exhaust. Thanks to fuel injection, oxygen sensors in the exhaust manifolds, and a feedback fuel control system, emissions are kept to a minimum. Even so, some pollution is still produced and must be eliminated by the converter. So the converter must be in good condition and working correctly to keep tailpipe emissions to an ….