# Fuel Pressure Systems

**URL:** <https://community.cartalk.com/t/fuel-pressure-systems/26119>\
**Category:** Power/Fuel\
**Tags:** gasoline\
**Created:** [February 6, 2009, 2:59pm UTC](https://community.cartalk.com/t/fuel-pressure-systems/26119 "2009-02-06T14:59:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![BSCowboy](https://avatars.discourse-cdn.com/v4/letter/b/3bc359/32.png) [@BSCowboy](https://community.cartalk.com/u/BSCowboy)\
**Post date:** [February 6, 2009, 2:59pm UTC](https://community.cartalk.com/t/fuel-pressure-systems/26119/1 "2009-02-06T14:59:49Z")

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What pressure does the common fuel tank mounted fuel pump maintain in a modern vehicle’s fuel system? What would be the flow rate of this? In the event of an accident, are there safeguards to stop the fuel pump from operating?

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**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\
**Post date:** [February 6, 2009, 4:39pm UTC](https://community.cartalk.com/t/fuel-pressure-systems/26119/2 "2009-02-06T16:39:56Z")

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I think most or all cars have some kind of switch that triggers in a crash to cut off the fuel. Check your owner’s manual to see if they talk about how to reset it if it triggers when it shouldn’t.