what's the normal peak temp.....
Seasoned Member
Joined: Apr 2009
Posts: 330
Likes: 0
From: Nokomis FLA.
Year: 1992 2dr Sport 2wd & 1992 4dr Laredo 4x4
Model: Cherokee
Engine: 4.0 liter H.O.
Since I replaced the aux fan I am running about 160 with the A/C. all the time. We have been in the upper 90's last week.
Hey guys, Iam here in Phx. Az It was 115 out in the shade the other day. I was getting the same temps. with the A/C on @ an idle after 10 minutes of sitting still.
Tomorrow I am going to try the 180 t/s. Also I replaceed the radiater, but that was because the side tank gave out. Ill get back to yall.
Tomorrow I am going to try the 180 t/s. Also I replaceed the radiater, but that was because the side tank gave out. Ill get back to yall.
Senior Member

Joined: May 2008
Posts: 817
Likes: 7
From: Michigan
Year: 1996
Model: Cherokee
Engine: 4.0
CF Veteran
Joined: Jul 2009
Posts: 1,640
Likes: 0
From: Keesler AFB, MS
Year: 1998 XJ
Model: Cherokee
Engine: 4.0L
This is what happened to mine. i have not updated my original thread but will soon.
I have never had an eletric fan so i didnt know how or when it should run.
A lot of people on here gave me great advice and taught me a lot about the cooling system.
When i would crank my jeep and turn the a/c on the fan would be moving fast but when it would get hotter i would look at the fan and it would barely be turning. this is caused from when the motor in the fan gets hot, the resistance gets higher causing the fan to turn slower and not pulling much air at all. then your geep will creep up towards 220 like mine did. i changed my fan ( advance auto, 100 bucks ) and it has not gone above 210. i am in the florida panhandle so i know what type of heat your talking about. i had changed everything also. does your lower rediator hose have the spring in it so it cant collapse?
Rusty
Well, I put in a 160 T/S on the 17th. Now it runs @ 180 unless I am idleing for a long time it will go to 210-215. Ohh and this is with the A/C on. Remember I live in Phoenix Az. I guess that makes me a yuppie. It was 114 here today, I just can,t see the fun in 4x4ing in this heat without a/c. If you want an example of what is like, take your blow dryer and use it to try and cool off !!!!
Member
Joined: Jun 2009
Posts: 197
Likes: 0
From: Bucks County Pa.
Year: 1987
Model: Cherokee
Engine: 4.0 Renix HO. head
Good info and interesting write-up.-> Jeep Horizons :: Jeep Cherokee XJ Cooling System Upgrade
Same upgrade I did.. never goes about 195-200 on I95 bumper to bumper traffic with temp of 90 degrees outside... And I got rid of that ugly bottle above the heater blower and made room for other goodies like a compressor to air up after trail rides..
Senior Member
Joined: Sep 2008
Posts: 680
Likes: 2
From: Phoenix AZ
Year: 1997
Model: Cherokee
Engine: I6ho
Well, I put in a 160 T/S on the 17th. Now it runs @ 180 unless I am idleing for a long time it will go to 210-215. Ohh and this is with the A/C on. Remember I live in Phoenix Az. I guess that makes me a yuppie. It was 114 here today, I just can,t see the fun in 4x4ing in this heat without a/c. If you want an example of what is like, take your blow dryer and use it to try and cool off !!!!

I run a 195* thermo, summer time, idle, in traffic, with a/c on it can get up around 210. Winter, it runs 195-205.
Has been like this since I moved here in 2000.
Last edited by Mike H.; Jul 21, 2009 at 08:45 AM.
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
kend3031
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
1
Sep 30, 2015 08:15 AM
Kathy Zirkle
Cherokee Chat
7
Sep 27, 2015 08:38 PM
Zerocyde
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
Sep 27, 2015 02:49 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)



I've never seen it... sounds kinda yuppie
