# 2011 Buick Regal shuts down when decelerating

**URL:** <https://community.cartalk.com/t/2011-buick-regal-shuts-down-when-decelerating/122344>\
**Category:** Maintenance/Repairs\
**Tags:** regal, buick\
**Created:** [August 5, 2018, 6:50pm UTC](https://community.cartalk.com/t/2011-buick-regal-shuts-down-when-decelerating/122344 "2018-08-05T18:50:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![John04](https://avatars.discourse-cdn.com/v4/letter/j/a3d4f5/32.png) [@John04](https://community.cartalk.com/u/John04)\
**Post date:** [August 5, 2018, 6:50pm UTC](https://community.cartalk.com/t/2011-buick-regal-shuts-down-when-decelerating/122344/1 "2018-08-05T18:50:06Z")

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Engine shuts down when slowing down, turning into drive way, nothing consistent but seems to happen only when slowing down but intermittent. CXL Model

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [August 6, 2018, 3:28am UTC](https://community.cartalk.com/t/2011-buick-regal-shuts-down-when-decelerating/122344/2 "2018-08-06T03:28:39Z")

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Have someone try cleaning the electronic throttle body.

The electronic throttle body is what controls the engines idle speed whenever the accelerator is released.

Tester

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**Author:** ![Michael\_Marshall\_1](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@Michael\_Marshall\_1](https://community.cartalk.com/u/Michael_Marshall_1)\
**Post date:** [August 6, 2018, 5:01am UTC](https://community.cartalk.com/t/2011-buick-regal-shuts-down-when-decelerating/122344/3 "2018-08-06T05:01:50Z")

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No CEL? When the MAF sensor on our Maxima failed, it did about what you’re describing.