How to Reset a Fuel Pump After Failure?

Once a fuel pump has failed, resetting the pump itself involves specific steps to make sure everything functions as it is supposed to. The first step is to consult the manual of your vehicle since different models possess unique reset procedures. Virtually all cars have a fuel pump reset switch, referred to as an inertia switch, that deactivates the pump in case of an accident. This switch is usually located in the trunk or at the driver’s side kick panel and can be reset without having to use tools by pressing a button.

Check the age of the fuel pump and its previous performance (in troubleshooting). According to data, fuel pumps normally work perfectly between 70,000 and 100,000 miles; however with harsh driving conditions this may be significantly reduced. For example, a Consumer Reports report revealed that almost 15% of vehicles must undergo fuel pump repairs because they were running low on gas or had been exposed to hot weather for too long.

If the reset switch doesn’t solve the problem, your next step is to test the fuel pump relay and fuse. If the fuel pump fuse blows, no power will be supplied to the fuel pump and system failure become apparent. About 5% of fuel pump failures are related to electricity, such as blown fuses and faulty relays, according to the National Highway Traffic Safety Administration (NHTSA).

If you want to get a good result in resetting the fuel pump, then simply turn off the ignition and remove battery for at least 10 minutes. This action will clear any stored fault codes and can also reset the fuel pump’s computer system. Reconnect the battery and start the car, as you should hear a faint whirring sound from the fuel pump when it is powered on. If you do not hear this noise, it could mean more pump or electrical problems.

Automotive technician — Sarah Johnson believes “Scheduled routine maintenance, and accurate reset calibrations will prevent costly future repair services” Secondly, preventing the fuel pump from burning out can be as simple as keeping the tank at least one-quarter full: running low on fuel is bad for the pump because you’re essentially causing a high-pressure component to work harder — that works fine while it’s meant to do that job, in circuit with a return path and cooling inside the tank.

In short, if you suspect your Fuel Pump is dead, first locate and reset the inertia switch, verify relay(s) and fuses AND remove battery to clear fault codes. If you continue to have problems, you should seek professional assistance to properly diagnose and fix the issue.

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