How do you clear a Harley Davidson DTC?
If an item has a “Y” next to it then you have trouble code.
- Press and hold the odometer button to view the actual DTC.
- Press & hold the odometer button to clear the code. “CLEAR” will appear in the odometer window. Press & hold the odometer button to proceed with clearing the DTC.
What kind of fuel injection does a Harley Davidson have?
In theory Harley’s fuel injection system is still an open-loop system by design. Article courtesy of American Iron Magazine The Harley-Davidson ESPFI system is known as a Speed/Density, Open Loop, Sequential Port Fuel Injection system, that controls both fuel flow, and spark timing. Let’s further explain these terms.
When to use open loop fuel injection on Harley Davidson?
Since Harley only uses narrow band sensors (NBO2) capable of only a very narrow range of Air/fuel ratio (AFR), the ECM can only control the mixture under cruising or very low load conditions. Under all other conditions the ECM switches to Open Loop as described in this article.
How does a fuel injection system work on a motorcycle?
EFI Basics. In its simplest terms, an electronic fuel injection (EFI) system is a computer controlled fuel delivery system. This electronic control unit (ECU) reads various sensors located on the vehicle and makes the determination of how much fuel to allow the engine to have based on this information.
Can you change the fuel map on a Harley Davidson?
If you want to modify your motorcycle–an EFI system makes it motorcycle’s engine requires changes to the fuel map of the EFI system. reliability, and adjusting them can be an expensive procedure. in power and performance, but changes also nullify the engine warranty. helping owners make upgrades.
Where does fuel injection on a Harley Davidson come from?
The mighty Harley is slowly loosing its carburetor. For those of you who haven’t noticed or are stuck back in the 80’s, a large number of the bikes coming from Milwaukee have fuel injection installed. International environmental concerns have slowly forced the change from carburetor to electronic fuel injection.
How does the fuel pump work on a Harley Davidson?
The fuel pump provides a high pressure feed to the fuel rail that contains the fuel injectors. On the fuel rail there is a pressure regulator that limits the fuel pressure to 39-45 PSI and maintains a constant pressure. The pressure regulator has a vacuum line that connects it to the intake manifold.
How does The NbO2 sensor work on a Harley Davidson?
The NBO2 sensors control the fuel mixture when idling and cruising. Because the O2 sensor keeps the fuel mixture at an EPA friendly 14.7:1 AFR, the exhaust temperature tends to be quite warm.
What are the sensors in a fuel injection system?
The electronics and Sensors diagram is typical wiring diagram for an EFI system. Some EFI systems may have more or fewer sensors than this drawing. This represents a typical fuel injection system. The engine and air temperature sensors are simple devices that change in resistance as the temperature changes.