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Old 03-05-2012, 11:36 AM   #1
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Temp at 212ish....

Greetings All, My temp is consistently over 210 when it is warmed up. It doesnt seem to be overheating........ is that how the gauges run on these? I have only had this jeep for a couple of weeks..........thanks...

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Old 03-05-2012, 11:43 AM   #2
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212 would be perfectly normal.

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Old 03-05-2012, 11:43 AM   #3
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210 is normal operating temp.
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Old 03-05-2012, 12:13 PM   #4
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that's exactly where mine is always running. I, too, was concerned at first, but she hasn't overheated on me yet.
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Old 03-05-2012, 12:17 PM   #5
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Yep that's a normal temperature and installing a lower temp thermostat to try to lower it is not advised due to the computer being programmed around that temp. Newer vehicles are designed to run hotter so they can more easily pass their smog tests.
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Old 03-05-2012, 12:19 PM   #6
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Great thanks for the confirmation. Just wanted to make sure nothing needed fixing. My 30 day warranty is almost up.........
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Old 03-05-2012, 12:20 PM   #7
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since the radiator is pressurized, the boiling point is much higher than 212 degrees. I think the boiling temp is raised by 3 degrees per extra pound of pressure, so if you have an 18 lb radiator cap your boiling point is up over 260 degrees. Jeeps like to run at 210.
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Old 03-05-2012, 01:06 PM   #8
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Mine always ran at 210 no matter what T-stat i had in it. I just put a new radiator and and 160 T-stat and now Mine runs at 160 all the time. I tried a 160 Tstat before and still ran 210. It never over heated i was worried that it ran the same with a 160 or 195 T-stat. Here is a link http://www.wranglerforum.com/f5/radiator-142903.html
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Old 03-05-2012, 01:15 PM   #9
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It will only run cooler like that with a cooler thermstat on very cool days. The engine will still run at or close to 210 on hot days with a 165 or 180 degree thermostat.

A lower temp thermostat cannot be used to magically force an engine to run cooler except in colder weather. If it could force an engine to run cooler in all conditions, we wouldn't need to run as big of a radiator as we do. Which is why our engines don't run at 195 degrees with a 195 degree thermostat except in really cold conditions.
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Old 03-05-2012, 01:34 PM   #10
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Quote:
Originally Posted by Shoe View Post
since the radiator is pressurized, the boiling point is much higher than 212 degrees. I think the boiling temp is raised by 3 degrees per extra pound of pressure, so if you have an 18 lb radiator cap your boiling point is up over 260 degrees. Jeeps like to run at 210.
This is further compounded by using antifreeze. It not only lowers the freezing temp but it increases the boiling temp too. Notice at the bottom of the chart it shows a 50/50 ratio with a 15psi cap at a boiling point of 265*F. Which if it was all water would have a boiling point of 257*F. The 50/50 ratio raises it another 8 degrees. So a possible boiling point of 274*F in our 18psi radiators.(Based on this chart and 3* increase every psi)

If your worried about the temp being high. Remember that autos run at a high temp than manuals as the radiator does double duty and cools the trans as well. Also try cleaning out the radiator fins, use a hose and spray it from the engine compartment. I did this a month ago and I was probably spraying it for 30 min and I was still getting mud out of it.

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Old 03-05-2012, 01:38 PM   #11
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Originally Posted by jasonduke5 View Post
Mine always ran at 210 no matter what T-stat i had in it. I just put a new radiator and and 160 T-stat and now Mine runs at 160 all the time. I tried a 160 Tstat before and still ran 210. It never over heated i was worried that it ran the same with a 160 or 195 T-stat. Here is a link http://www.wranglerforum.com/f5/radiator-142903.html
This also has the potential to shorten the life of your engine. It was meant to run at 210 not 160. It's the whole reason why your suppose to wait for your engine to warm up to "operating" temperature before you drive, or at least drive hard.

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