Duramax Engine: Getting Inside GM’s 6.6L Diesel Dominator
They are used for towing and hauling, frequently over long distances and through unforgiving environments.
Understanding ABS Module Logic
ABS is the foundation of the ESC system. The ABS modulator also performs electronic brake distribution (EBD).
Not Sure That Air Filter Needs To Be Replaced? Check The Fuel Trim
The kicker with trying to diagnose whether an air filter is affecting performance is to see if the long-term or short-term fuel trims have changed.
Fuel Trims!
Understanding fuel trims is the gateway to diagnosing common emissions problems. However, before we begin to use this information, specific criteria must be met in order for the PCM to gather accurate information.
NHRA Top Sportsman Don O’Neal Unveils New NGK/NTK Sponsored Car
NGK Spark Plugs USA has extended its relationship with NHRA Top Sportsman drag racer Don O’Neal.
Understanding Diesel Exhaust Filters
The Diesel Particulate Filter (DPF) is a ceramic filter that has thousands of tiny channels or honeycomb-shaped openings that trap the soot onto the channel walls and prevent the particulate matter (down to 1 micron) from exiting out the tail pipe.
Temperature & Electrical Diagnostics
Engine coolant temperature is often a primary component of the “enable criteria” needed to run diagnostic monitors and store diagnostic trouble codes and related freeze-frame data.
Driveability Diagnostics And Direct Injection
Direct injection systems can be a diagnostic challenge, but with the right foundation, problems can be solved profitably.
Contaminated Fuel Can Wreck Havoc On Fuel Delivery Systems
Although cases involving contaminated gasoline are relatively rare nowadays, they still occur. In many cases, the technician has replaced the fuel pump or mass air flow (MAF) sensor to address a P0171/P0174 “lean-condition” DTC with no result. In all likelihood, the technician didn’t consider the possibility that the vehicle’s fuel might be contaminated with E85 gasoline, diesel fuel, stale gasoline, or, to a lesser degree, sugar and water.
Engine Coolant Temperature Diagnostics
While old-school cooling system service often focused on coolant leaks and overheating engines, let’s begin thinking “new-school” by looking at modern cooling systems through the eyes of the engine coolant temperature (ECT) sensor.
