Comments on: Tuning and Understanding your Toyota Viscous Fan Clutch

By: tino

tino — Sat, 26 Nov 2011 08:50:04 +0000

hi just fitted a new clutch fan and it making a lot of fan noise in 1st and 2nd gear is that working normal it is not over heating

By: Mitch

Mitch — Mon, 07 Nov 2011 10:52:09 +0000

Hey a question I drive a 99 hilux I have a overheating issue have a new head,radiator,fan clutch,radiator cap new coolent, and still overheating! Happins at freeway speeds getting so hot causing cap to let out some pressure. Only then left is water pump and pressure sensor but its phiscaly overheating. Down fall I have a arb bullbar winch numberplate and spotlight friend has same set up on his 97 hilux and dont have the issue running out of hope please someone give me something phisical to check! Thank..

By: Piet Maritz (South Africa)

Piet Maritz (South Africa) — Fri, 20 May 2011 17:35:32 +0000

Hi Tienie, I read an article where the guy put the sensor in a pan over a gas stove and heated the water with a thermometer and actually checked the opening of the valves. That may be the way to go, although I think you did this long time ago!

By: Tienie Nel (South Africa)

Tienie Nel (South Africa) — Thu, 23 Sep 2010 19:51:49 +0000

Thank you enjoyed your information as I am having an overheating problem – FJ80 1990 3F Carburator. Tried going the electric fan way with no joy.
A question: How do you know the fan is engaging correctly at each of the specivied temperature settings?I am going to apply this infoe and will supply feedback.
Regards

By: Bryan

Bryan — Wed, 22 Sep 2010 05:09:33 +0000

Thank god for this write up!! Just rebuilt my 93 4runner hub based on it.
Great Job

By: eddie

eddie — Mon, 30 Aug 2010 11:56:18 +0000

I’ve had a mysterious heating issue with my 87 van. suspect the fan clutch because the thermostat has been removed (by me, to see if the engine would run cooler, and it temporarily did)—– and thus far the van only overheats when the engine has been working very hard for a long time. pressure test came back fine. no leaks. OEM fan clutch replaced 500 miles ago. All is fine until, bam, overheating. Could overhauling the fan clutch solve this issue? Do people replace them because they don’t know how to overhaul, or for convenience? could it be some other component?

By: Viscous coupling fan clutch - PakWheels Forums

Viscous coupling fan clutch - PakWheels Forums — Wed, 14 Jul 2010 09:46:38 +0000

[...] [...]

By: V6 4runner with engine whine - Toyota - 4Runner . org Forum

V6 4runner with engine whine - Toyota - 4Runner . org Forum — Thu, 06 May 2010 22:44:30 +0000

[...] is great read on the fan-clutch: Tuning and Understanding your Toyota Viscous Fan Clutch Paul’s esoteric meanderings __________________ Chris 07 Salsa SR5, 4wd Cyclone pre-cleaner , Aux Transmission Cooler, [...]

By: Toyota Fan Clutches – OEM vs Aftermarket » LandCruiserWiki.info

Toyota Fan Clutches – OEM vs Aftermarket » LandCruiserWiki.info — Wed, 21 Apr 2010 09:54:43 +0000

[...] The operation of the OEM clutch is explained here - http://neuralfibre.com/paul/4wd/tuning-and-understanding-your-toyota-viscous-fan-clutch [...]

By: buddy

buddy — Sat, 03 Apr 2010 14:36:36 +0000

where do i get the silicon fluid?

my local shops dont have it?

thanks

By: Chris Fraser

Chris Fraser — Sun, 01 Nov 2009 23:05:08 +0000

Paul,

Thanks for the advice! I was about to dish out over $1000 for a new allow radiator until you told me about this. Armed with $10 tube of oil and an hour of my time all was said and done! The truck now runs two full needle widths cooler, which is back to where is was prior adding a turbo!!! My truck is just any old aftermarket turbo mod either, its a highly modified engine running various parts from both the 1HZ and 1HDT engines pumping out 150 rwhp! Keeping this thing cool is essential!

Thanks again
Chris

By: Electric fans on a 4.2 td - Australian 4WD Action Online Forums - the 4WD, 4x4 and offroad truck community. Get the latest tips, news, reviews, images and video clips.

Thu, 02 Apr 2009 09:19:19 +0000

[...] yes, you can adjust the temp settings on the fans. Paul has done a good write up on this… Tuning and Understanding your Toyota Viscous Fan Clutch | Paul’s esoteric meanderings __________________ BEU77Y and the BEE55T 105 series GXL Intercooled turbo diesel auto Don’t [...]

By: New Fan Clutch Article I wrote - IH8MUD Forums

New Fan Clutch Article I wrote - IH8MUD Forums — Tue, 31 Mar 2009 21:06:13 +0000

[...] Fan Clutch Article I wrote This might interest some of you. Tuning and Understanding your Toyota Viscous Fan Clutch | Paul’s esoteric meanderings It’s an expansion on Franks. Thanx [...]