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Old 01-17-2016, 09:08 AM   #1
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Rad fan resistor fix

So both my rad fans wouldn't run on low speed due to the resistors being knackered.

I simply refused to pay 67 per side to solve the issue so decided to find an alternative way to fix them.

After a bit of looking around I bought a couple of high quality resistors and made up my own harness. Removed the old resistors today and fitted my new harnesses whilst I was fitting new condensers and I now have fully working rad fans again with two speeds

Grand total cost? 4.62

I'm going to run the car for a bit and if I don't get any issues I will consider making up kits for people for a small fee if there's enough interest

The new resistors I have used are far superior to the factory ones and they also have a large heat sink on them which should help stop them from dying as easily as the standard ones.

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Old 01-17-2016, 09:48 AM   #2
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Great job! Many of us have done the same and its not very hard.

Hopefully others will see this post in the future and be inspired to DIY also!
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Old 01-17-2016, 02:33 PM   #3
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Love these sort of fixes
Porsche Boxster S Type 986

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Old 01-21-2016, 09:02 PM   #4
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details please.?!
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Old 01-22-2016, 08:08 AM   #5
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Old 04-04-2016, 06:18 PM   #6
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I am looking for some details on an alternative radiator fan resistor to the expensive OEM version.

Can anyone provide some details for an alternative resistor? Source? Part Number? Specs?

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Old 08-09-2016, 04:24 PM   #7
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What spec are the resistors?
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Old 08-09-2016, 07:45 PM   #8
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Here is an interesting ,related thread for older P-Cars that gives the basic elements of the discussion
Ballast resistor/oil & AC fan low speed resistor - "redesigned" - Rennlist Discussion Forums
A thermo switch seems like a good addition?

Last edited by Gelbster; 08-09-2016 at 07:57 PM.
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Old 04-21-2017, 09:43 AM   #9
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Hi Sideways Steve,
I too live near Glasgow, are you able to give me some more feedback on how your resistors performed long term as I'm having a problem with mine and I'd like to do a fix.

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