# 2006 Kia Optima vibrates when I use the AC

**URL:** <https://community.cartalk.com/t/2006-kia-optima-vibrates-when-i-use-the-ac/122765>\
**Category:** Maintenance/Repairs\
**Tags:** optima, kia\
**Created:** [August 12, 2018, 4:33am UTC](https://community.cartalk.com/t/2006-kia-optima-vibrates-when-i-use-the-ac/122765 "2018-08-12T04:33:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![LaLomaChapman](https://avatars.discourse-cdn.com/v4/letter/l/f475e1/32.png) [@LaLomaChapman](https://community.cartalk.com/u/LaLomaChapman)\
**Post date:** [August 12, 2018, 4:33am UTC](https://community.cartalk.com/t/2006-kia-optima-vibrates-when-i-use-the-ac/122765/1 "2018-08-12T04:33:22Z")

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I have a 2006 Kia Optima it runs fine, but whenever I turn on the air conditioner the car vibrates. The motor mounts have been installed and the air conditioner has been checked. Is this something I have to live with or is this something that can be fixed. The last mechanic put in a new radiator the old one was leaking) and he said the vibration is common to old Kia models.

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [August 12, 2018, 7:17am UTC](https://community.cartalk.com/t/2006-kia-optima-vibrates-when-i-use-the-ac/122765/2 "2018-08-12T07:17:45Z")

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An A/C system can put a lot of load on an engine. Some cars react differently to it.