The switch may have tripped and must be reset if her engine all of sudden stops when driving, has issues beginning up, or transforms over there is no starting.

You are watching: Fuel pump emergency shut off switch

The fuel pump shut off switch is an electrical switch the is found on specific vehicles equipped through internal burning engines. Typically referred to together the inertia switch, the fuel pump shut off switch is designed to shut turn off the fuel pump once it is detected the the auto has come to an uncommonly sudden, or forceful stop.

In the event of an accident or collision, wherein it may be feasible for fuel present or hoses to become damaged, the fuel pump shut turn off switch will certainly deactivate the fuel pump in stimulate to protect against flow and also prevent fuel leaks from ending up being a potential safety hazard. The switch will generally come with a reset button that will certainly reactivate the fuel pump if the switch to be tripped.

The fuel pump switch is an electrical component, and just the same as the rest on the vehicle, in time it deserve to wear out and also develop issues. Together the switch has actually the capacity to shut turn off the fuel pump, worries with it can potentially result in drivability and also performance problems for the vehicle. Normally a poor or failing fuel pump shut off switch will create a few symptoms that can alert the driver of a potential issue.

1. Engine all of sudden stops when driving

One that the an initial symptoms of a potential worry with the fuel pump shut off switch is one engine that all of sudden stalls while driving. If the fuel pump shut off switch malfunctions while the engine is operation it might shut turn off the fuel pump and cause the engine come stall. The fuel pump may be reactivated by finding and pressing the reset button for the switch.

2. Switch the trips because that no reason

Another symptom the a problematic fuel pump shut off switch is a switch the trips because that no noticeable reason. A good switch will certainly shut the the fuel pump as soon as it detects that the car has come to a sudden or violent stop, a faulty switch, however, may trip and shut off the fuel pump because that no apparent reason, even when the automobile is experiencing normal control conditions. The move will need to be continuously reset in order because that the automobile to drive.

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3. No begin condition

Another symptom the an issue with through the fuel pump shut turn off switch is a no begin condition. If the move malfunctions it might permanently disable the fuel pump and also produce a no start condition. The engine might still crank when the an essential is turned but it will certainly not have the ability to start because of a powerless fuel pump. The fuel pump might remain disabled, sometimes even if the reset button is pressed, till the move is replaced. A no start condition can likewise be caused by a wide range of various other issues, so having the car diagnosed is very recommended.

While numerous fuel pump shut off switches will typically last the life that the vehicle, they deserve to sometimes fail and cause difficulties with the drivability that the vehicle. If your automobile is displaying any kind of of the symptom above, or you suspect that your fuel pump shut off switch might be having an issue, have the vehicle inspected through a expert technician, such together one indigenous, to determine if the switch must be replaced.