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How hot do these run?!

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Old 10-11-2010 | 11:34 PM
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Default How hot do these run?!

This is my second cherokee (only had first one a few weeks before i got rear-ended on freeway and totaled it ...), but my new one runs at about 210 engine temp! It seems pretty hot. Anyone have any insight or knowledge on this? It pretty much stays at 210 as well. I can be in town, or drive for an hour on the freeway and 210 is just what its at. Any ides? Thanks!!
Old 10-11-2010 | 11:42 PM
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if im not wrong that is perfect
Old 10-11-2010 | 11:42 PM
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When was the thermostat last changed and when was the last time the radiator got flushed.. Sounds like you ended up with someones elses problem.

If the radiator fluid is at the right level, then you probably have a constricted radiator or bad thermostat. If the fluid is low, you might have a air bubble causing the overheating. Does the heater run hot or cold?

If you want, run a dedicated electrical line to the radiator fan relay and leave the fan running all the time. You then either turn it off when you cut the ignition or connect it to a switched line going to the ignition.
Old 10-11-2010 | 11:45 PM
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problem? 210 is fine, id start getting worried at 230-240
Old 10-11-2010 | 11:47 PM
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210 is fine
Old 10-11-2010 | 11:59 PM
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Alright....thanks alot for the input guys!!! The hood does feel really hot!!....What I did notice when I was looking for a cherokee was that alot of the hoods of these have some "checking" in the paint(only on the hood)....making me think that the hot feeling is normal..? Anyways, I've only had it a few weeks and have yet to flush the radiator.... so i'll do that tomorrow and see if that helps things out a bit.! And just to clarify, after 5 minutes of running from cold start in the morning, it's right at 210, but as i mentioned earlier, it seems as though no matter how long I run it for, it stays right at that temp. Which makes me think its normal! ??
Old 10-12-2010 | 12:00 AM
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OH!!! AND, it DOESNT "overheat", It just seems to run "hot."
Old 10-12-2010 | 12:01 AM
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Originally Posted by cherokee90
if im not wrong that is perfect
X2 your pretty lucky it stays at 210 nomatter what your doing.

Be thankful your not one of those guys driving in the summer with the heat on and the hood popped.
Old 10-12-2010 | 10:19 AM
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Originally Posted by 00maroonXJ
Alright....thanks alot for the input guys!!! The hood does feel really hot!!....What I did notice when I was looking for a cherokee was that alot of the hoods of these have some "checking" in the paint(only on the hood)....making me think that the hot feeling is normal..? Anyways, I've only had it a few weeks and have yet to flush the radiator.... so i'll do that tomorrow and see if that helps things out a bit.! And just to clarify, after 5 minutes of running from cold start in the morning, it's right at 210, but as i mentioned earlier, it seems as though no matter how long I run it for, it stays right at that temp. Which makes me think its normal! ??
Since u have a '00 XJ, which is OBD-II, see if u can locate/borrow a scan tool of some kind and temporarily plug it into the ALDL port under the dash. A scan tool will give a digital display of actual coolant temp. If possible, drive it for a bit, both in town and highway, noting the scan tool temp readings. Factory gauges are known crap. 5 minutes to go from cold to 210.....sounds like a goofy factory gauge to me.
Old 10-12-2010 | 07:33 PM
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if you run it without the thermostat it will run a constant 190-200. will help by 10-20 degrees. but 210 is ok.
Old 10-12-2010 | 08:42 PM
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Originally Posted by seagrave121
if you run it without the thermostat it will run a constant 190-200. will help by 10-20 degrees. but 210 is ok.


No need to remove the T-stat. 210* is where it should be.
Old 10-12-2010 | 08:57 PM
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Originally Posted by trs80


No need to remove the T-stat. 210* is where it should be.
X2 They tend to run around that temp. Mine runs at 210 all day long.
Old 10-12-2010 | 09:07 PM
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Originally Posted by seagrave121
if you run it without the thermostat it will run a constant 190-200. will help by 10-20 degrees. but 210 is ok.
if you need to remove your t-stat to stay cool, then you have other cooling problems you need to fix
Old 10-12-2010 | 09:34 PM
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T-stat only controls minimum coolant temp at moderate to low ambient temps........at high ambient temps, the rest of the cooling system controls (or doesn't) max coolant temps. The XJ has a dinky (surface area) radiator.....everything needs to be in good shape in order to maintain it's cool in high ambient temps/heavy loads.

210F is where the factory has rigged the gauge to point, normal operating temp range can fluctuate +/-40 degrees.

Last edited by djb383; 10-12-2010 at 09:42 PM.
Old 10-12-2010 | 09:43 PM
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mine runs 210 when sitting for a while but running temp is about 175, i did some mods and it def helped



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