Why is the fuel pump still running on my 1989 Mercury Grand Marquis?
Why is the fuel pump still running on my 1989 Mercury Grand Marquis?
The fuel pump on my 1989 Mercury Grand Marquis is still running after turning the ignition off, causing the battery to drain. Replacing the fuel pump relay stops this from happening for a short time but it soon reoccurs.
How do I reset the fuel pump shut off switch?
Push the button on the inertial switch; it should be clearly marked as the fuel pump reset, and may be in a contrasting color to the case. You may need to turn the ignition key to the on or accessory position to energize the module and reset the switch. Proceed to the next step if your inertia switch doesn’t use an external button.
What causes the fuel pump to shut off while driving?
Engine suddenly stops while driving. If the fuel pump shut off switch malfunctions while the engine is operating it may shut off the fuel pump and cause the engine to stall. The fuel pump may be reactivated by finding and pressing the reset button for the switch.
What are the symptoms of a bad fuel pump?
One of the first symptoms of a potential issue with the fuel pump shut off switch is an engine that suddenly stalls while driving. If the fuel pump shut off switch malfunctions while the engine is operating it may shut off the fuel pump and cause the engine to stall.
Where is the fuel pump shut off switch?
Average rating from 198 customers who received a Car is stalling Inspection. The fuel pump shut off switch is an electrical switch that is found on certain vehicles equipped with internal combustion engines.
What causes a fuel pump to remain disabled?
The fuel pump may remain disabled, sometimes even if the reset button is pressed, until the switch is replaced. A no start condition can also be caused by a wide variety of other issues, so having the vehicle diagnosed is highly recommended.
Where is the reset button on a fuel pump?
Push the button on the inertial switch; it should be clearly marked as the fuel pump reset, and may be in a contrasting color to the case. You may need to turn the ignition key to the on or accessory position to energize the module and reset the switch.
