Locking a Viscous Fan
Hi.....
Is it OK to lock a defective fan, so its permanently operating.....
I've been advised not to do it, as it will put to much strain on it, at high revs.....
Its on a 4l petrol, only used offroad as a toy........
Cheers Jon.......
Is it OK to lock a defective fan, so its permanently operating.....
I've been advised not to do it, as it will put to much strain on it, at high revs.....
Its on a 4l petrol, only used offroad as a toy........
Cheers Jon.......
CF Veteran
Joined: May 2009
Posts: 1,844
Likes: 4
From: Glen Burnie, MD
Year: 1994
Model: Cherokee
Engine: 4.0 H.O. K&N, Borla headers, custom down pipe, magnaflow hi-flo cat, flowmaster to turn down tip
i would recommend against it as it will not allow your engine to reach operating temp quick enough will slowly kill your engine from cold operation. also it might break your home made lock at high RPM and then you will have problems. just get a new one and cough up the cash
I'd hit up a local u-pull it yard and find a new fan. Just found the high performance one out of a Tarus replacing the OEM. When it is all said and done I'll have about $40 total in the project.
Cheers.....postage will be a problem, as I'm in the Old Country.....
I've locked it by simply drilling 2 bolts thru the unit.......I suppose the ally could fracture thru high revs now I've weakened it....
Best be looking for a 2nd hand one then......
Will 2nd hand ones be any good, as I read somewhere, they only have a 5/6 year life span......

I've locked it by simply drilling 2 bolts thru the unit.......I suppose the ally could fracture thru high revs now I've weakened it....

Best be looking for a 2nd hand one then......
Will 2nd hand ones be any good, as I read somewhere, they only have a 5/6 year life span......
CF Veteran
Joined: May 2009
Posts: 1,844
Likes: 4
From: Glen Burnie, MD
Year: 1994
Model: Cherokee
Engine: 4.0 H.O. K&N, Borla headers, custom down pipe, magnaflow hi-flo cat, flowmaster to turn down tip
yea the Taurus fan is the way to go, if you can find the duel fan setup it is even better
Did not know they had a dual fan setup. Any info on the swap for the dual? I have a 30 days on this fan and could swap at any time, just would feel better having some info If I decide to go that route. Thanks in advance.
Thread
Thread Starter
Forum
Replies
Last Post
jmsummers2012
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
56
Jun 12, 2025 02:04 AM
scatgo
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
Mar 22, 2021 09:56 AM
tleed
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
3
Oct 4, 2015 01:20 PM
DieselDaze
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
Sep 30, 2015 06:42 PM
Sandyman
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
Sep 29, 2015 06:33 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)



