Probe V6-182 3.0L (1990)
Fuel Pump Inertia Switch: Description and Operation
Typical Inertia Fuel Shut-Off Switch
PURPOSE
The inertia switch is used to shut the fuel pump "Off" in the event of a collision.
CONSTRUCTION
The inertia switch consists of a steel ball held in place by a magnet.
OPERATION
When a sharp impact occurs, the ball breaks loose from the magnet, rolls up a conical ramp and strikes a target plate. This opens the electrical
contacts of the switch and disrupts power to the electric fuel pump. The engine will quit running within a few seconds after the fuel pump loses
power. The inertia switch must then be manually reset before the engine can be restarted.
WARNING: DO NOT reset the inertia switch button if you see or smell fuel.
