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How-to: Install a low-temp fan switch

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[gti-vr6] low temp fan switch "Philip Meadows Jr." <pm@onramp> Sun, 10 May 1998 23:16:16 -0500
Re: [gti-vr6] Low Temp Fan Switch "pm@onramp" <> Fri, 08 Jan 1999 11:03:12 -0600

From gti-vr6-owner@dev.tivoli Sun May 10 23:17 CDT 1998
From: "Philip Meadows Jr." <pm@onramp>
To: GTI <gti-vr6@dev.tivoli>
Subject: [gti-vr6] low temp fan switch
Date: Sun, 10 May 1998 23:16:16 -0500
I installed a low temp fan switch from ND Sat. Our cars seem to only read
one temp once warmed up, so its impossible to gauge any difference in
coolant temp. It's good piece of mind though since its already been 100
this year in Texas. The fan does now come on more frequently and run

The switch requires a 30mm socket, but Sears only carries up to 27mm. I
went w/a 1 3/16" socket (if my memory is correct) since this was closest to
the 30mm. I had to get a 1/2" to 3/4" socket adapter and there was just
enough room to squeeze it on. If you have a C or maybe a 94 GLX (?) this is
a 5 minute job. However, since the newer VR6's have a different plug, the
switches require an adapter. You have to cut off the old plug, crimp on the
new connectors and put together the new plug. The wires are pretty short
(saved $.03) so its a tight job, but not too tough as long as you take your

Turn 2 oil cooler next weekend and then my car will be summerized for the
Texas heat!
Philip Meadows Jr.
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From gti-vr6-owner@cobra.ccsi Fri Jan 8 11:12 CST 1999
From: "pm@onramp" <>
To: Michael Brock <michael@ti>,
Subject: Re: [gti-vr6] Low Temp Fan Switch
Date: Fri, 08 Jan 1999 11:03:12 -0600
Look down between the engine and battery on the back side of the radiator.
You will see a brass fitting with some wires coming out of it. That is the
switch. Its simply a sensor that triggers the fan when the coolant reaches
X degrees. The fan switch will help, but your best bet is an oil cooler. I
live in Dallas and since installing it I've seen my oil temp at 226 once
briefly and 218 the rest of the time.


At 10:21 AM 1/8/99 -0600, Michael Brock wrote:
>I've looked through the archives and all I can find is a blurb saying
>how big a socket I need to use.  Anayway, in anticipation of my yearly
>summer trip and our wonderful Texas heat, I was thinking about getting
>the low temp fan switch from ND.  Problem is that I can't find where the
>damn switch is!  I've looked in the Bentley and I can't seem to figure
>out which piece it is.  Any help would be appreciated...
>Michael Brock

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