Tech Tip: Nissan’s Engine Idle Speed is 25 RPM too High
If you confirm the idle, in Park or Neutral, is more than 25 rpm above specification (with the engine warm), and/or DTC P0507 (ISC System) is stored, this incident may be the result of recent cleaning or replacement of the throttle body. The vehicle “in-use” learned idle may be higher after throttle body deposits are reduced (by cleaning or replacement).
Bosch Expertise on Oxygen Sensors for Vehicle Manufacturers Benefits the Aftermarket
Bosch has been manufacturing and supplying automotive parts and systems to vehicle manufacturers since the very beginning of the automobile. As inventor, manufacturer and supplier of many ground-breaking automotive technologies – such as the oxygen sensor which was introduced in 1976 – to original equipment manufacturers (OEMs), Bosch enjoys a unique position in being able to bring OE-level quality, fit and function to its aftermarket products.
Pulling Codes: Status Really Does Matter
Many modern-day fuel systems offer a new look into system status definitions. It’s become very important to extend our understanding well beyond the concepts of simple “open loop” and “closed loop” status. This month, we will explore the new fuel system definitions that are present on many of today’s vehicles. We’ll begin our discussion by looking at each one on an individual basis.
Diagnostic Dilemmas: Solving No-Code Performance Complaints
For many diagnostic techs, nothing is more discouraging and time-consuming than dealing with a no-code driveability complaint. Today’s second-generation On-Board Diagnostics II (OBD II) can be extremely sophisticated because the OBD II powertrain control modules (PCMs) in modern vehicles have far more computing capacity than did the older, pre-1996 OBD I vehicles. Nevertheless, we occasionally have to deal with a no-code performance complaint on a modern OBD II vehicle.
Troubleshooting Wideband O2 Sensors
Many late-model imports such as Honda, Toyota, Volkswagen and others use Air/Fuel sensors rather than conventional oxygen sensors to monitor the exhaust gases coming out of the engine. What’s the difference? An air/fuel sensor can read a much wider and leaner range of fuel mixtures than a conventional O2 sensor. That’s why they’re also called “wideband” O2 sensors.
SMP Introduces Standard Brand Electronic Illustrated Parts Guide on DVD
SMP announces the availability of its Standard brand electronic illustrated parts guide on DVD. This new resource delivers additional, unique features not available in a printed catalog. One of the most important benefits of this electronic parts guide is the ability to regularly update the data electronically.
Diagostic Dilemmas: Lost in ‘The Diagnostic Woods’
This real-world case study of a 2002 Chevy S-10 pickup, a 1995 Buick and a 1995 Lincoln Town Car illustrates why “chasing” trouble codes can get you lost in the Diagnostic Woods.
Directions: U.S. House Votes to Put the Brakes on E15
In February, the U.S. House of Representatives passed an amendment blocking federal funding of the Environmental Protection Agency’s (EPA) action to implement the use of E15.
Tech Tip: Toyota MIL On with DTCs Set in Subfreezing Temperatures
Following a cold soak in subfreezing ambient temperatures, some 2003-’08 Corolla and Matrix vehicles equipped with a 1ZZ-FE engine may exhibit an MIL on with one or more of the following DTCs as the result of a vacuum leak at the intake manifold.
‘Sound Off’ with Your Favorite DynoMax Cat-Back Systems and Save this Summer
DynoMax Performance Exhaust will offer enthusiasts a chance to save on their DynoMax cat-back exhaust purchase this summer through the “Sound Off” promotion. The “Sound Off” promotion offers $75 mail-in rebate for the purchase of any qualifying cat-back performance system.
Pulling Codes: The Story of Code P0446
This is the first in a series of investigations covering many states’ top emissions-related codes. Our goal in this report is to discuss the characteristics of the P0446 code as it applies to many GM systems.
Tech Feature: Courage Under Misfire
Generally, when a customer brings a vehicle into a shop that has a misfire concern, they will describe it as bucking, jerking or loss of power. They also may describe it, depending on the cause, as a jerking when they take off from a start, but smoothes out once the vehicle gets moving. They may tell you the check engine light has been flashing.