# Fuel problem

**URL:** <https://community.cartalk.com/t/fuel-problem/77108>\
**Category:** Maintenance/Repairs\
**Created:** [February 2, 2013, 10:25am UTC](https://community.cartalk.com/t/fuel-problem/77108 "2013-02-02T10:25:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mase](https://avatars.discourse-cdn.com/v4/letter/m/b5ac83/32.png) [@Mase](https://community.cartalk.com/u/Mase)\
**Post date:** [February 2, 2013, 10:25am UTC](https://community.cartalk.com/t/fuel-problem/77108/1 "2013-02-02T10:25:22Z")

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I have a 2001 mercury cougar, everytime the fuel gets to a half tank or below it stalls when going up a hill or around a curve, anytime u give it extra acceleration when it’s a half tank or below it stalls and sputters, it’s been in the shop for 3 months and got it out and ran good for a day now back bad I need a machanics advice on what it could be other than fuel pump, fuel filter, o2 sensor, or plugs and wires… I’ve tried all of them

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [February 2, 2013, 11:25pm UTC](https://community.cartalk.com/t/fuel-problem/77108/2 "2013-02-02T23:25:06Z")

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Sounds like a fuel problem. Connect a fuel pressure gauge to the rail.  
An O2 sensor will not cause stalling.  
Plugs and wired will not cause stalling on a 1/2 tank. Worn plugs and wires will cause misfiring.