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docs: create configuration/Fuel_pump
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title: Fuel pump
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description: Setting the on/off conditions of the fuel pump
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published: true
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date: 2021-01-02T04:30:32.916Z
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tags:
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editor: markdown
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dateCreated: 2021-01-02T04:30:32.916Z
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---
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# Fuel pump
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Fuel pump control is a simple but important function performed by the ECU. Currently Speeduino does not perform variable (PWM) pump control, but
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## Settings
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![fuel_pump.png](/img/accessories/fuel_pump.png){.align-center width=480}
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* **Fuel pump pin** - The Arduino pin that the fuel pump output is on. In most cases this should be left to `Board Default` unless you have a specific reason to change this.
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* **Prime duration** - How long (In seconds) the fuel pump should run when the system is first powered up. Note that this is triggered **when the ECU is powered on**, which will not always be the same as when the ignition is turned out. If you have a USB cable connected then the ECU is already powered up.
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