TJ: Bad fan clutch? - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Jeep Tech
GL4x4 Live! GL4x4 Casino

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Search
Reply
 
Thread Tools Search this Thread
Old August 20th, 2014, 03:12 PM   #1
Catnip 0_o
Martial Artist
 
Catnip 0_o's Avatar
 
Join Date: 10-14-10
Location: Roseville, MI
Posts: 374
iTrader: (2)
Mentioned: 0 Post(s)
Default Bad fan clutch?

2002 TJ 4.0L
157k Miles

Things I have replaced within the past 6 months:
Thermostat & Housing
Radiator Cap
Radiator
Radiator Full Flush

I spent the past week at silver lake sand dunes here in MI and all went well the entire trip until the last day. I noticed that when at idle or low speeds the temp needle will spike to about 220 or so. Before the dunes, she wasnt having any overheating issues at all.

Today when I drove to work on the freeway for work 25 miles it didnt spike over 210 at all. However once I got off the freeway and came to stop lights, it started to jump. I also started to hear a minor squeaking noise coming from under the hood that increased with rpms. When I parked the jeep, I popped the hood and with the engine off and hot, spun the fan with the hand to find that it had little to no resistance and spun freely.

I am assuming it must be the fan clutch but I just want to make sure before I go and replace it. The only two things I havent replaced in the cooling system in the past 3 years I have owned the Jeep is the water pump and the fan clutch.

Also how difficult it is to replace if that ends up being the issue.

Thanks
Catnip 0_o is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old August 20th, 2014, 03:42 PM   #2
wave_crusher
I'll Direc your TV
 
wave_crusher's Avatar
 
Join Date: 01-20-09
Location: Big Rapids, MI
Posts: 5,025
iTrader: (21)
Mentioned: 1 Post(s)
Default

Does sound like a clutch that is not engaging. It's pretty straight forward to change, big ass crescent wrench (no idea the actual wrench size) on the inside of the fan. Keep the belt on and turn it off like a screw. You may have to stick something between the fan blades to keep the pump from turning.

Youtube has a lot of videos on changing one
wave_crusher is online now   Reply With Quote
Old August 21st, 2014, 05:48 PM   #3
bdd1469
bdd
 
bdd1469's Avatar
 
Join Date: 04-12-10
Location: alto mi
Posts: 2,066
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Yahoo to bdd1469
Default

Sounds like a fan clutch. I have also seen jeep water pump impellers rust away to the point that they cant move any coolent at low rpms.
bdd1469 is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Jeep Tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 10:52 AM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Page generated in 0.11977 seconds with 30 queries