# 1993 buick roadmaster; blower fan motor stays "on", after ignition is off

**URL:** <https://community.cartalk.com/t/1993-buick-roadmaster-blower-fan-motor-stays-on-after-ignition-is-off/36729>\
**Category:** Maintenance/Repairs\
**Tags:** blower-motors, roadmaster, engines, buick\
**Created:** [September 16, 2009, 3:26pm UTC](https://community.cartalk.com/t/1993-buick-roadmaster-blower-fan-motor-stays-on-after-ignition-is-off/36729 "2009-09-16T15:26:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![brillobuttons](https://avatars.discourse-cdn.com/v4/letter/b/898d66/32.png) [@brillobuttons](https://community.cartalk.com/u/brillobuttons)\
**Post date:** [September 16, 2009, 3:26pm UTC](https://community.cartalk.com/t/1993-buick-roadmaster-blower-fan-motor-stays-on-after-ignition-is-off/36729/1 "2009-09-16T15:26:58Z")

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blower fan motor continues to operate, after ignition turned off

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [September 16, 2009, 4:56pm UTC](https://community.cartalk.com/t/1993-buick-roadmaster-blower-fan-motor-stays-on-after-ignition-is-off/36729/2 "2009-09-16T16:56:08Z")

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Normal, as long as it turns off after the engine cools off a little.

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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:** [September 16, 2009, 5:34pm UTC](https://community.cartalk.com/t/1993-buick-roadmaster-blower-fan-motor-stays-on-after-ignition-is-off/36729/3 "2009-09-16T17:34:43Z")

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I think the poster is referring to HVAC blower motor.

The problem might be from a defective high speed blower motor relay. This relay has constant power supplied to it thru a fusible link. So if the relay sticks the blower will continue to operate even if the ignition switch is turned off.

Tester