What does the inertia switch do?
The switch is called an inertia switch and is designed to shut off the fuel pump supplying gasoline to the fuel injection system in an accident. The purpose is to prevent the electric fuel pump from continuing to pump explosive gasoline after an accident that may have resulted in a fuel-system leak.
Is the inertia switch supposed to be up or down?
The inertia switch is a safety item incorporated by Ford in the fuel system of its vehicles. The only time the inertia switch should trip is during a collision. On the top of the inertia switch is a red button. With the inertia switch in the open position, the red button is raised up.
What is an impact switch?
Impact switches or crush switches work by sensing an impact, shock, or abrupt force. In a crush switch, the can collapses upon impact latching the circuit closed. The crushing of the switch closes a contact that will then trigger a mechanism, whether that is a delay followed by a detonation or an automatic response.
Do all vehicles use an inertia switch?
All modern fuel injection cars are equipped with an inertial fuel cut off switch that shuts off the power supply for the fuel pump if the vehicle is in a collision. This prevents fuel from being pumped in case of the fuel line damage during an accident.
What is an acceleration switch?
Acceleration switches are specialized components that sense changes in acceleration and can trigger various responses once a specific speed is reached. These components can be customized in many different ways and are also available as a standard assembly for use in a range of applications.
Where is the inertia switch on a Ford Ranger?
You can find the inertia switch, which is also known as the fuel pressure inertia switch (FPIS), on Your Ford Ranger’s passenger foot area, under the dash, near the front edge of the carpet.
Where is the inertia switch on a 2003 Ford Ranger?
On the 2001-2011 Ford Ranger, the fuel pump shut-off switch is located in the front passenger footwell area in the right upper corner. You will need to remove the lower scuff plate to access the switch. If you do not find it, try searching on the right side of the passenger footwell, behind the fuse panel door.
How do I reset my Ford fuel switch?
The switch is designed to trip and cut power to the fuel pump in the event of a collision, but you can also trigger it by hitting a large bump or pothole as well. To reset your Ford’s inertia switch, press down on the reset button.
Where is the inertia switch on a 1999 Ford Ranger?
The inertia switch is on the RH toe board under the glove box.