Keepin' it cool
CF Veteran
Joined: Oct 2007
Posts: 3,883
Likes: 6
From: W-PA
Year: 2001
Model: Cherokee
Engine: 4.0
i've heard how interesting it was to watch it and never got a chance to.
CF Veteran
Joined: Oct 2007
Posts: 3,883
Likes: 6
From: W-PA
Year: 2001
Model: Cherokee
Engine: 4.0
::CF Administrator::
Joined: May 2008
Posts: 10,039
Likes: 16
From: Okc area
Year: 1991
Model: Cherokee
Engine: 4.0 I6
The HO I6's have 2 sensors/sending usnits..Well my 91 does and my buddies 93 does..One at the back of the head and one on the thermostat housing..
Do you hear banjos?
Joined: Apr 2008
Posts: 9,644
Likes: 6
Model: Cherokee
Blue is right, the closed system will work fine!! I switched to the open system for easy on the trail repairs. I used to have temps in the 210-240 range. Since the upgrade, I've been runnning below 200 consistently. I wired my fan to a switch inside the cab, so I can kick it on when needed. It isn't needed unless I'm wheeling it hard. I also switched from two electric fans to one mechanical and one electric for simplicity. So far it has been a great mod!! HTH!! If you need more info on what I did let me know!!
CF Veteran
Joined: Apr 2008
Posts: 2,237
Likes: 3
From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
They do... the one at the back of the head is for the gauge, the one at the front is the one that works with the electric fan.
CF Veteran
Joined: Apr 2008
Posts: 2,237
Likes: 3
From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
I have a closed system also. I run between 190 and 210 except when its blazing hot and humid out. Maintenence is the key with keeping a closed system happy and working correctly.
I have hood spacers rather than hood vents. A switch to control the stock electric fan to kick it on when wheeling. And I added "water wetter" to my system.
I have hood spacers rather than hood vents. A switch to control the stock electric fan to kick it on when wheeling. And I added "water wetter" to my system.
::CF Administrator::
Joined: May 2008
Posts: 10,039
Likes: 16
From: Okc area
Year: 1991
Model: Cherokee
Engine: 4.0 I6
CF Veteran
Joined: Apr 2008
Posts: 2,237
Likes: 3
From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
It's an additive for your coolant that lowers operating temps.
http://www.redlineoil.com/products_coolant.asp
This is the one I use and have used in the past. 4-Wheel Hardware and Quadratec sell another brand that is purple colored.
I got mine from a local speed shop, but I saw it on the shelf at O'Riellys last time I was there. Jeg's and Summit both carry this also.
http://www.redlineoil.com/products_coolant.asp
This is the one I use and have used in the past. 4-Wheel Hardware and Quadratec sell another brand that is purple colored.
I got mine from a local speed shop, but I saw it on the shelf at O'Riellys last time I was there. Jeg's and Summit both carry this also.
::CF Administrator::
Joined: May 2008
Posts: 10,039
Likes: 16
From: Okc area
Year: 1991
Model: Cherokee
Engine: 4.0 I6
Ok just curious had never heard of it..I don't need it my jeep never get's over 210 even in the almost 110 degree humid summer temps...Normally it runs about 195
