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Unread 08-07-2013, 07:24 AM   #1
02jeepwrangler
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2004 LJ Wrangler 
 
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Running hot issues... 04 LJ

My LJ has a little over 100k miles now. Its always run at 210 exactly no matter what I was doing.

A few weeks ago my temp would be erratic, doesn't matter where you were driving, sometimes it will run hot, sometimes a little cooler.. I figured the thermostat may be sticking. I buy a 192 degree, take it apart, and find the housing was corroded and coming apart. So I bought a new one and replaced the temp sensor while I was at it. Put it all back together and burped the system.. All is good. Runs a little below 210... I drive it out to Moab from Houston tx, it did great. It got up to 210 at times sometimes just a hair over, but I figured it was from all the hills.... Few days after I get back my radiator cracks at the top.. I just got a replacement from Orielly's. now it runs below 210 at all times except 60+ mph. Then it goes over 210 a little bit. Anyone have this issue?

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Unread 08-07-2013, 07:54 AM   #2
JeffBowser
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Sounds to me like you described a perfectly running system. Aside from recently when I had a broken radiator, I ran plus or minus 210 (a needles width, perhaps) from day one.
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Unread 08-07-2013, 08:15 AM   #3
phrankenstein
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I recently had almost the exact issue you did. One thing I found is that the fan clutch was not operating properly. Even though it felt good and tight, it did not have that tell tale roaring noise when operating properly. I used a Hayden HD from O'Reilly and it really helped. I had to replace the radiator, but the fan clutch definitely helped. Maybe it could be your problem. Good luck!
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Unread 08-07-2013, 09:17 AM   #4
RnEmOvr
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Jeeps run at 210, that is perfectly normal.

Sent from my phone where grammar isn't easy.
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Unread 08-08-2013, 06:51 AM   #5
02jeepwrangler
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I know mine used to run right at 210. But now it goes past 210 some on the hwy...
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Unread 08-08-2013, 11:07 AM   #6
dayriesw
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Sounds like you have some junk in the system and need to flush it out.
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Unread 08-08-2013, 11:26 AM   #7
rchase559
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The temperature gauge on your 2004 is more of a dummy gauge than anything. It is likely giving you inaccurate readings and may be reporting a lower temperature than actual.

There are some individuals who have a reader that can read the actual temp sensor. They report that on later TJs (2003-2006?) their reader displays different values than the gauge on the dash.

Here's one link that discusses it. I'm sure there are more as well.

http://www.jeepforum.com/forum/f9/tj...rking-1245150/
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Unread 08-08-2013, 12:05 PM   #8
JeffBowser
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Jeez folks, a TJ running plus/minus 210 is a normal thing.
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