How Sensors Provide ‘Good Input’ for Diagnostics
One of the systems that Subaru has perfected through improved reliability over the years has been its distributorless ignition system (DIS) for all of its models. Because of the horizontally opposed design of its engines, the ignition system can be centrally mounted and made simple. In this article, we will touch on some common diagnostic
GM Timing Belt & Chain Service
Some overhead cam engines in General Motors vehicles use timing belts to drive the cam (the 2.0L for example), some use chains (2.3L Quad Four, Cadillac’s Northstar dual overhead cam 4.6L V8, the Aurora Northstar 4.0L V8 and Chevy’s Vortec 4200 inline six), and some use a combination of both (Chevrolet’s 3.4L V6). The rest
Diagnostic Dilemmas: Playing the Diagnostic Shell Game
More often than not, deciphering diagnostic trouble codes is like playing a high-tech version of the old circus sideshow “shell” game. In the trouble code shell game, we are led to believe that the pea (diagnostic solution) is hidden under one of the shells (DTCs) stored in the diagnostic memory. Unfortunately for the diagnostic technician,
The Fuel Injector Market and System Configurations
Looking back into automotive history, it’s hard to believe that carburetors were still being installed on import vehicles as late as 1989! But carburetors require all sorts of external vacuum and electronic gimmickry to control the cold-starting, fast idle, hot idle and low-speed cruise functions. Electronic fuel injection has since replaced carburetors in all import
Nissan Engine Diagnostics
You don’t have to be an import specialist to know that Nissan cars and trucks have a good reputation for reliability and longevity. Nissan, under the Datsun name, was one of the first Japanese automakers to break into the U.S. market. They did it right, by establishing a strong dealer network and offering a quality
Ford Timing Belts & Chains
Timing belt and chain replacement is one service that isn’t going away any time soon. Most Ford engines with overhead cam timing belts have a recommended replacement interval of 60,000 miles to 120,000 miles depending on the application (see the chart on page 54). So if a customer is driving a vehicle that is more
Getting “Tuned” Into Exhaust System Service Opportunities
Although stainless steel exhaust systems have reduced the number of exhaust system replacements, it’s important to remember that regular exhaust system inspections remain an integral part of import service. When inspecting an exhaust system, remember that the exhaust pipe and muffler must: Help “tune” the engine for peak performance; Reduce noise to legal levels; Meet
Chrysler Neon 2.0L
When Chrysler introduced their new Neon models back in 1995 under the Dodge and Plymouth nameplates, they said they were launching a new generation of “fun-to-drive” entry-level cars that would appeal to a wide range of people. Everything was new about the Neon: a brand new body, a brand new chassis and two new engines,
Selling Multi-Coil Ignition Parts
Time has indeed passed you by if you still believe in the traditional import engine tuneup. Many years ago, much of the import service market revolved around the annual spark plug, ignition cable, distributor cap and rotor replacement needed to maintain an import engine at peak efficiency. During the past decade, however, multi-coil waste-spark and
OBD II Diagnostics:Tips And Tricks to Make the Process Easier
The Malfunction Indicator Lamp (MIL) can be a golden light of opportunity for your shop. If the light comes on, it means the Onboard Diagnostics II system (OBD II) has detected an emissions-related problem. OBD II is designed to turn on the MIL if a problem occurs that may cause emissions to exceed federal limits