Ok, it will be a small plastic box with a button persay on top. It is near the E brake
pedal assy under dash. It will have 2 wires going to it. I would say its about 2.5" tall. You need to push the button on top and if this does not work, use your meter and probe one of the wires going to it while cranking or cycling key on/ off every 5-8 seconds. this is the last thing from relay to pump. If we do not have power there. I will then tell you my thoughts otherwise
On F-series, the Inertia Switch is located at the far Left part of the toe-board, near the parking brake assembly. On E-series, the switch is on the passenger side cowl panel, just forward of the right front door.
|Typical Inertia Fuel Shut-Off Switch |
The inertia switch is used to open the power circuit to the fuel pump, or the control circuit to the fuel pump relay, in case of an accident. The inertia switch must be manually reset by pushing the reset button located on top of the inertia switch.
Operation of the inertia switch is as follows:
A steel ball is held in place by a magnet. When a sharp impact occurs, the ball breaks loose from the magnet, rolls up a conical ramp and strikes a target plate, which opens the electrical contacts.