# Blower resistor **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [May 24, 2011, 2:00am UTC](https://community.cartalk.com/t/blower-resistor/64919 "2011-05-24T02:00:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![kjwl5874](https://avatars.discourse-cdn.com/v4/letter/k/2acd7d/32.png) [@kjwl5874](https://community.cartalk.com/u/kjwl5874)\ **Post date:** [May 24, 2011, 2:00am UTC](https://community.cartalk.com/t/blower-resistor/64919/1 "2011-05-24T02:00:54Z")
I’ve had to change the blower motor resistor in my 1999 Astro Van 3 times in the last year. The high speed of the fan motor will not work when the resistor goes bad. What could cause the resistor to go bad so often? I purchased the replacement from my local auto parts store and they do replace it under warrany but I feel something must be causing he problem. ---
**Author:** ![TXdealer](https://avatars.discourse-cdn.com/v4/letter/t/50afbb/32.png) [@TXdealer](https://community.cartalk.com/u/TXdealer)\ **Post date:** [May 24, 2011, 2:25am UTC](https://community.cartalk.com/t/blower-resistor/64919/2 "2011-05-24T02:25:00Z")
You need to replace your fan. ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [May 24, 2011, 3:10am UTC](https://community.cartalk.com/t/blower-resistor/64919/3 "2011-05-24T03:10:22Z")
+1 ---
**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\ **Post date:** [May 24, 2011, 10:26am UTC](https://community.cartalk.com/t/blower-resistor/64919/4 "2011-05-24T10:26:00Z")
**_I Agree With TXdealer & Cigroller. A Worn Out Blower Motor / Fan Will Keep Blowing Resistors._** They are usually pretty expensive, new. If it’s not real hard to replace you could try a used one. I’ve had good luck with ones from Take-It-Off-Yourself auto salvage yards at a fraction of the new price. The trick is finding a vehicle with relatively low miles that was totalled and hasn’t been crushed. It’s good to practice the fan removal on a cadaver vehicle, too. Call a dealer and see what they want for a new one, first. Then decide how to proceed. P.S. Another thought. Does the fan sound OK when it works ? Sometimes debris (leaves, bugs) or misplaced foam gaskets, etcetera, interfere with the fan and I suppose that would also load up the resistor too much, just as the defective motor would. CSA ---
**Author:** ![thecarguy](https://avatars.discourse-cdn.com/v4/letter/t/ea5d25/32.png) [@thecarguy](https://community.cartalk.com/u/thecarguy)\ **Post date:** [May 24, 2011, 6:29pm UTC](https://community.cartalk.com/t/blower-resistor/64919/5 "2011-05-24T18:29:30Z")
the windings on the resister gets corrosion on it and makes it not work, probably due to tempature, moister,salt,and dirt. ---
**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\ **Post date:** [May 24, 2011, 6:42pm UTC](https://community.cartalk.com/t/blower-resistor/64919/6 "2011-05-24T18:42:14Z")
**_" the windings on the resister gets corrosion on it and makes it not work, probably due to tempature, moister,salt,and dirt."_** I would consider your theory if this was the original 1999 resistor, but not when “_I’ve had to change the blower motor resistor in my 1999 Astro Van 3 times in the last year._” They can’t corrode that fast. If that was the case then the first resistor wouldn’t have lasted all those years. CSA