# Unexpected acceleration

**URL:** <https://community.cartalk.com/t/unexpected-acceleration/37165>\
**Category:** Maintenance/Repairs\
**Tags:** acceleration, volvo, s40\
**Created:** [September 26, 2009, 12:37pm UTC](https://community.cartalk.com/t/unexpected-acceleration/37165 "2009-09-26T12:37:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Panthersfan69](https://avatars.discourse-cdn.com/v4/letter/p/ecccb3/32.png) [@Panthersfan69](https://community.cartalk.com/u/Panthersfan69)\
**Post date:** [September 26, 2009, 12:37pm UTC](https://community.cartalk.com/t/unexpected-acceleration/37165/1 "2009-09-26T12:37:54Z")

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I have a 2001 Volvo s40 which accelerated unexpectedly on occasion. Typically it happens when I’m at a stop light or in stop and go traffic, although the acceleration happened when I had the cruise control on going 65 mph. This doesn’t happen when the A/C is on. Any help?