# Taurus hvac **URL:** \ **Category:** General Discussion\ **Created:** [March 2, 2015, 8:41pm UTC](https://community.cartalk.com/t/taurus-hvac/89196 "2015-03-02T20:41:41Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [March 2, 2015, 8:41pm UTC](https://community.cartalk.com/t/taurus-hvac/89196/1 "2015-03-02T20:41:41Z")
01 Taurus. Base heat controls. I turned selector from heat to off when car was not running. Ignition off. I could hear the vent/duct moving as I did. I switched control form off-vent and heard noise. Switched it off again and noise faded. Residual vacuum? I thought 01 Taurus had stepper motor for vent switching? ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [March 2, 2015, 9:45pm UTC](https://community.cartalk.com/t/taurus-hvac/89196/2 "2015-03-02T21:45:05Z")
Apparently, the blend door is the only one to use a stepper motor: ---
**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\ **Post date:** [March 3, 2015, 3:50am UTC](https://community.cartalk.com/t/taurus-hvac/89196/3 "2015-03-03T03:50:23Z")
In addition to the one electric motor, there are TWO vacuum motors.