SIMPLE/CHEAP Blower Motor Resistor FIX - LotusTalk - The Lotus Cars Community
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post #1 of 12 (permalink) Old 01-31-2019, 03:25 PM Thread Starter
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SIMPLE/CHEAP Blower Motor Resistor FIX

Just bought a used Elise and had the blower motor issue. Decided to fix it for cheap with about $4 of Chinese power resistors and about 30 mins of my time (PS someone tried fixing it before me). Here is a diagram for anyone trying to do this in the future

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Last edited by MyLo; 02-01-2019 at 06:10 AM.
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post #2 of 12 (permalink) Old 02-01-2019, 06:01 AM
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There's no way in hades you got the old resistor pack out in 30 minutes... If you did, THAT is what you need to be describing!

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post #3 of 12 (permalink) Old 02-01-2019, 06:09 AM Thread Starter
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Mine was already ripped apart. Someone before me tried fixing it and for the looks of it didn't know what they were doing so they just hooked up speed 3 to work.
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post #4 of 12 (permalink) Old 02-01-2019, 06:23 AM
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Thanks for this diagram. I will be attempting this fix this weekend on my elise. I have 3 resistors that I am using to create the 3 speeds.

These are the 50w resistors i have chosen:
0.05 Ohm
0.22 Ohm
0.25 Ohm

I would recommend getting some nice black and red silicone wires to extend this circuit to a better location for servicing and water protection. My progress will be documented in the elise section for my build.
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post #5 of 12 (permalink) Old 02-01-2019, 06:26 AM Thread Starter
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Why do you need 3 resistors? 2 is all you really need.
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post #6 of 12 (permalink) Old 02-01-2019, 06:39 AM
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In my car:
https://www.lotustalk.com/forums/f31...38/index2.html

I increased the value of the low speed resistor significantly. Keeps you comfortable on the borderline days, where you might open the windows but it is humid or something
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post #7 of 12 (permalink) Old 02-01-2019, 11:32 AM
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Did Lotus move the resistor pack in later model Elises? I have a 2009 model.
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post #8 of 12 (permalink) Old 02-01-2019, 11:41 AM
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Quote:
Originally Posted by MyLo View Post
Just bought a used Elise and had the blower motor issue. Decided to fix it for cheap with about $4 of Chinese power resistors and about 30 mins of my time (PS someone tried fixing it before me). Here is a diagram for anyone trying to do this in the future

can you post links for buying these parts online?

05' US Elise.240hp,HRM edition,Sport pack,Touring pack,Katana supercharged,starshield,custom painted engine covers,S111 boomerang rear hook, Hurricane air filter,2bular 6" exhaust,Lotus driving lights,Infinity speakers,Lid Bone,V1 radar with remote audio/display,Tesla Roadster double din conversion with Kenwood ddx9902 headunit-subwoofer-rear cam,TRmotorsports wheels,lightweight Braille battery,aluminum radiator,silicon hoses,alotaluv....
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post #9 of 12 (permalink) Old 02-01-2019, 12:18 PM
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Quote:
Originally Posted by David Craig View Post
Did Lotus move the resistor pack in later model Elises? I have a 2009 model.
I looked at OP's profile, and he lists his car as an '04. Given that, I think he is RHD where they had the resistor pack up top and accessible anyways.

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post #10 of 12 (permalink) Old 02-01-2019, 12:51 PM
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I was not that pleased with Chinese resistors, they seemed to be over watt rated. For a once in a lifetime job, I would suggest buying from a regular electronics supply house, digikey etc
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post #11 of 12 (permalink) Old 02-04-2019, 08:26 PM Thread Starter
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If you buy 100 watt resistors its way overkill even if they lied by 30% you are still safe

https://www.ebay.com/sch/i.html?_fro...stor&_osacat=0
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post #12 of 12 (permalink) Old 04-02-2019, 10:45 AM Thread Starter
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Here is what the end result looks like

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