# Fan only blows on high **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** forester, subaru\ **Created:** [June 9, 2010, 3:38pm UTC](https://community.cartalk.com/t/fan-only-blows-on-high/50093 "2010-06-09T15:38:49Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![davwelch](https://avatars.discourse-cdn.com/v4/letter/d/46a35a/32.png) [@davwelch](https://community.cartalk.com/u/davwelch)\ **Post date:** [June 9, 2010, 3:38pm UTC](https://community.cartalk.com/t/fan-only-blows-on-high/50093/1 "2010-06-09T15:38:49Z")
my A/C and heating work fine, but the fan only blows it on the highest setting. What could be the problem and how much will it cost? ---
**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:** [June 9, 2010, 3:50pm UTC](https://community.cartalk.com/t/fan-only-blows-on-high/50093/2 "2010-06-09T15:50:01Z")
The fan speed resistor. High speed is 12v direct to the motor. All slower speeds go through a resistor to slow the motor down. That resistor has a non replaceable thermal breaker ( as opposed to a fuse ) built in. Only high speed says that breaker is blown, a new resistor is needed… BUT Why did the breaker blow ? Is the blower motor old and binding up causing increased load ? Is there debris in there ? Simply replacing the resistor may not be the whole story. ---
**Author:** ![Goldwing](https://avatars.discourse-cdn.com/v4/letter/g/e68b1a/32.png) [@Goldwing](https://community.cartalk.com/u/Goldwing)\ **Post date:** [June 9, 2010, 4:59pm UTC](https://community.cartalk.com/t/fan-only-blows-on-high/50093/3 "2010-06-09T16:59:59Z")
I don’t know what year & engine Forester you have but here’s an example from [rockauto.com](http://rockauto.com): 2002 SUBARU FORESTER 2.5L 2458cc H4 FI (6) [EJ251] : Heat & Air Conditioning : Blower Motor Resistor Price Core Total STANDARD MOTOR PRODUCTS Part # RU466 {Intermotor} $57.99 $0.00 $57.99 ---
**Author:** ![davwelch](https://avatars.discourse-cdn.com/v4/letter/d/46a35a/32.png) [@davwelch](https://community.cartalk.com/u/davwelch)\ **Post date:** [June 10, 2010, 3:17am UTC](https://community.cartalk.com/t/fan-only-blows-on-high/50093/4 "2010-06-10T03:17:44Z")
very useful… thank you… the car is old… 1998… there could very well be junk in there… I suppose getting to the resister (and cleaning necessary things) is the expensive portion of replacing this thing