How are scan tools used to diagnose fuel pump?
Factory and enhanced scan tools can monitor pressure transducers on the high and low sides of the system. This information can be used to diagnose the health of the low-side and high-side pumps. These tools will have the PID parameters for these components as part of the Mode 6 data.
What kind of diagnostic software does scantool.net use?
OBDwiz is the automotive diagnostic software that is included with every ScanTool.net PC-based scan tool. It is a breeze to install, easy to use, and is packed with features. Use OBDwiz to troubleshoot a problem with your vehicle, improve fuel economy, clear the ‘Check Engine’ light, and verify emissions readiness.
Can a fuel pump be used as an ECM?
Some late-model imports have even turned the fuel pump into its own module or node on a serial data bus. The module can share data like the fuel level and EVAP system status with the instrument cluster module and the ECM. What this also means is that this data can be monitored with a scan tool.
What to use to check fuel pump injectors?
If you do feel compelled to prove the injectors are pulsing, try using a scope and amp clamp. After a visual inspection and verifying the customer’s complaint, it’s time to connect the scan tool. First, pull the codes and make sure the modules are communicating on their communication buses.
Is the fuel gauge full all the time?
My fuel gauge is full at all times, I have apprx. 1/4 tank of gas. I replaced the sending unit as suspecting this as the problem. I have read through several threads on this site and performed all the troubleshooting tips to no avail. My grounds are good my gauge is functioning, I ohm check the new sender and ohms check fine.
Where is the sender on a GM fuel gauge?
The sender consists of a float on an arm that varies the resistance the sender applies to the circuit with gauge. GM cars from the 1930s to the 1960s operate on a 30 ohm scale. At zero ohms in the sender, the float is on the bottom of the tank and the gauge should read empty.
What are the components of a fuel gauge?
My experience with fuel gauges has been primarily with General Motors cars, but much of what follows is generally applicable to many others. The fuel gauge is composed of two components: a sender in the tank and a gauge on the instrument panel.
What should fuel gauge read at zero ohms?
At zero ohms in the sender, the float is on the bottom of the tank and the gauge should read empty. At 30 ohms, the float is at the top of its travel and the gauge should read full.