I began my driveability career shooting from the hip and taking educated guesses. Although I got by with this sort of approach, it wasn’t very scientific and surely did not plot the course for efficient and accurate repairs.
Only later did I come to learn a better, more efficient way of approaching driveability issues. Through the understanding of how components and fuel injection/feedback systems function, at their most basic level, I learned to extrapolate data from the basic OBD2 generic scan tool and make diagnostic decisions, right from the driver’s seat.
Join me as I take the novice (as well as the experienced) driveability technicians through the components of the fuel injection system, as well as the strategies in place that the PCM uses to supply the engine’s combustion chamber with the appropriate air-fuel ratio, regardless of operating conditions.
First, take the drivability technicians and offer insight as to how fuel injection strategy functions. After a thorough discussion of what critical inputs are necessary for the proper fuel delivery, and how these inputs contribute to the decision of the proper fuel injector pulse-width, interactive class exercises will begin.
Using my personal vehicle, with a MAF fueling strategy, a series of experiments were conducted to create a series of poor performance driveability faults. The faults include:
- Exhaust restriction
- Air Filter restriction
- Fuel restriction
- Un-metered air before the throttle plate
- Un-metered air after throttle (vacuum)
The scan data will be presented in a graphed format, for “action/reaction” comparison, as well as in a format featured only by ATS eScanELITE. The goal of the class is not at all a sales pitch, but to have the attendees analyze the data and decipher, which fault is responsible for the data being viewed at that time.
The class will be exciting and a great time for all. Attendees will leave with an understanding of how the computerized fuel injection system functions, how the feedback system corrects for inadequacies, and most importantly, with the confidence to implement the tools they likely already own, to gain a diagnostic direction, right from the driver’s seat.
Attendees will leave with an understanding of fuel injection strategy, fuel feedback control, and the ability to use generic scan tool data to make preliminary decisions about diagnostic direction, right from the driver's seat."
Register today for the Motor Age Accelerate in-person training event taking place Oct.15 in Rosemont, Ill.
