How Scangauge 2 Reads Fuel Pressure

The ScanGauge 2 is a small but powerful tool for vehicle owners who want to monitor their engine's performance. While it comes with 12 standard gauges, users can also add custom x-gauges to monitor other parameters. However, there is some confusion about whether ScanGauge 2 can read fuel pressure. Some users have reported that the FPR reading on their device shows no reading, while others have managed to get a fuel pressure reading by adding a separate fuel pressure sender and setting a parameter on the gauge. The manufacturer, Linear Logic, has stated that fuel pressure reports are available for about 10% of vehicles, and if the vehicle's ECU reports fuel pressure, the ScanGauge 2 should display FPR.

Fuel pressure monitoring requires a separate gauge

Fuel pressure monitoring is an essential aspect of engine maintenance, and it requires a dedicated fuel pressure gauge for accurate and safe readings. While the ScanGauge 2 is a powerful tool for monitoring various engine parameters, fuel pressure is not one of its standard features.

A fuel pressure gauge is specifically designed to measure the pressure of gasoline delivered to the engine, typically reported in pounds per square inch (PSI). This measurement ensures that the engine receives sufficient fuel for efficient performance. A typical fuel pressure gauge can read between zero and 15 PSI for carbureted engines, while fuel-injected engines may require higher pressures of up to 100 PSI.

The ScanGauge 2, on the other hand, offers a range of standard and X-gauge features, but fuel pressure monitoring is not included. While some vehicles may report fuel pressure to the ECU, it is not a standard parameter for the ScanGauge 2. Therefore, if you specifically need to monitor fuel pressure, you will need to invest in a separate fuel pressure gauge.

There are two main types of fuel pressure gauges: mechanical and electronic. A mechanical gauge is plumbed into the fuel line and uses a valve to detect fuel pressure. It can be a "wet" gauge, which uses a fluid like glycerin to dampen needle movements, or a "dry" gauge that lacks this fluid for potentially greater accuracy. However, dry gauges may not last as long due to engine vibrations. An electronic gauge, on the other hand, uses a sensor in the fuel line to provide a precise digital readout, and it can be placed anywhere, even on the dashboard.

When installing a fuel pressure gauge, safety must be a top priority. Mechanical gauges should not be plumbed into the passenger compartment as it is unsafe to have a fuel line inside the vehicle. An isolator can be used to transmit the fuel pressure reading safely, but this adds another component that could potentially fail. For this reason, it is generally recommended to use an electronic gauge for ongoing pressure readings.

The ScanGauge 2 does not support fuel pressure monitoring

The ScanGauge 2 is a powerful tool for vehicle owners and enthusiasts, providing a range of features and data readings. However, it's important to note that this particular model does not directly support fuel pressure monitoring. This limitation has been a common inquiry among users, who have expressed interest in monitoring fuel pressure to ensure optimal vehicle performance and prevent potential issues.

While the ScanGauge 2 offers various other functionalities, fuel pressure monitoring is not one of them. Some users have reported challenges in getting the device to display fuel pressure readings. This is due to the fact that fuel pressure sensors are not standard on all vehicles, and the ScanGauge 2 relies on the vehicle's ECU to provide this data.

In response to the demand for fuel pressure monitoring, some users have suggested adding a fuel pressure sender as an external component. This involves installing an additional sensor to provide the necessary data for the ScanGauge 2 to display. However, it's important to note that this requires additional hardware and setup, which may not be feasible or desired by all users.

It's worth mentioning that Linear Logic, the manufacturer of ScanGauge, has shown interest in developing additional X-Gauges for their products. They have engaged with the community to gather feedback and determine which parameters are most important to their customers. While there is no guarantee that fuel pressure monitoring will be included in future updates, it demonstrates their willingness to expand the capabilities of their products based on user input.

In summary, while the ScanGauge 2 offers a wide range of features, fuel pressure monitoring is not natively supported. Users seeking this specific functionality may need to consider alternative solutions, such as installing additional hardware or exploring other products that offer fuel pressure monitoring capabilities.

Fuel pressure monitoring requires a fuel pressure sender

The ScanGauge 2 is a nifty little device that can be used to monitor several parameters of a vehicle's performance. However, it does not come with a built-in fuel pressure monitoring feature. To monitor fuel pressure using the ScanGauge 2, you will need to add on a fuel pressure sender.

A fuel pressure sender is a device that measures the pressure of the fuel in the fuel rail, which is the pipe that delivers fuel to the engine's injectors. This information is then transmitted to the engine control module (ECM), which adjusts the fuel delivery to maintain optimal fuel pressure for efficient combustion.

By adding a fuel pressure sender to your ScanGauge 2 setup, you can gain valuable insights into your vehicle's fuel system. This can help you optimise engine performance, fuel efficiency, and emissions. Here are some detailed symptoms of a malfunctioning fuel pressure sender:

• Poor engine performance: You may notice a lack of power, reduced acceleration, or sluggishness when pressing the gas pedal.
• Rough idling: The engine may idle erratically, with vibrations or unusual noises, and even stall when the car is at a standstill.
• Reduced fuel efficiency: When the sensor fails, the engine may receive too much or too little fuel, leading to increased fuel consumption and lower miles per gallon (MPG).
• Check Engine Light (CEL): A faulty fuel pressure sensor can trigger the check engine light, indicating an issue within the fuel system.
• Hard starting: Difficulty in starting the engine, especially when it's cold, can be attributed to a faulty sensor not providing accurate data to the ECM.
• Excessive exhaust emissions: An irregular fuel pressure can result in an improper air-fuel mixture, leading to increased emissions and black smoke from the exhaust.
• Engine misfires: Fuel pressure irregularities can cause misfires in one or more cylinders, resulting in a noticeable "hiccup" while driving.
• Stalling or sudden loss of power: In severe cases, a faulty sensor can cause the engine to stall unexpectedly or experience sudden power loss while driving, creating a hazardous situation.

If you suspect a problem with your fuel pressure sender, it is advisable to have your vehicle inspected by a qualified mechanic. They can diagnose the issue and determine if the fuel pressure sender requires replacement or if there are other related problems within the fuel system.

The ScanGauge 2 can monitor fuel pump pulse width and fuel pump duty cycle

The ScanGauge 2 is a powerful tool that can be used to monitor a range of vehicle parameters, including those related to fuel pressure. While it cannot directly read fuel pressure, it can monitor the fuel pump pulse width and fuel pump duty cycle, which are related to fuel pressure.

The fuel pump pulse width measures the duration of the electrical signal sent to the fuel pump, which indicates how long the pump is running and, therefore, the amount of fuel being delivered to the engine. This parameter is available for both Bank 1 and Bank 2 of the fuel system and can be displayed using the ScanGauge 2 for Ford, Lincoln, and Mercury vehicles that use the CANSF protocol.

The fuel pump duty cycle, on the other hand, represents the percentage of time the fuel pump is active during a given period. This parameter is also available for vehicles using the CANSF protocol and can be monitored using the ScanGauge 2.

In addition to fuel pump-related parameters, the ScanGauge 2 offers a range of other features. These include the ability to monitor fuel level, transmission temperature, torque converter line pressure, and more. It is important to note that not all vehicles report the same set of sensors, and some parameters may not be available for certain models.

For those seeking to monitor fuel pressure directly, it may be necessary to install an additional fuel pressure sender. This would involve adding a sensor to the fuel system that directly measures the fuel pressure and sends the data to the ScanGauge 2. This option may be preferable for those who require precise fuel pressure readings.

The ScanGauge 3 supports fuel pressure monitoring

The ScanGauge 2 has limited functionality when it comes to fuel pressure monitoring. Users have reported difficulties in getting the device to report fuel pressure. While some vehicles may have the fuel pressure sensor (FPR) available, it is not standard on all models. In such cases, an external fuel pressure sender must be added to the setup, along with setting the appropriate parameter on the gauge.

The ScanGauge 3, on the other hand, offers a more comprehensive solution. It can display up to eight parameters on a single page and monitor up to 25 parameters simultaneously, providing a more detailed view of the vehicle's performance. This feature is especially useful for diesel engines, where monitoring fuel pressure is essential.

Additionally, the ScanGauge 3 allows users to customise the layout of the parameters on each page, ensuring a personalised experience tailored to their specific needs. With its advanced features and improved functionality, the ScanGauge 3 is a notable upgrade over its predecessor, providing users with a powerful tool for monitoring their vehicle's performance.

However, it is worth noting that some users have reported issues with code retrieval using the ScanGauge devices. Alternative solutions, such as Forscan or the UltraGauge, have been suggested by users seeking more comprehensive code-reading capabilities. Nevertheless, the ScanGauge 3 remains a popular choice for those seeking a balance between parameter monitoring and customisability.

Frequently asked questions