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Old 03-19-2015, 09:05 AM
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Engine Coolant Temperature a Bit High?

I have been driving my Jeep in central FL and the ECT has risen a little high a couple of times (~216*). I wouldn't have noticed it based on the Jeep's gauge, but the alarm in my TrailDash went off. Both times it has happened when I'm driving through the campground (speed limit 10 mph) and the Jeep is in second gear. Temperatures here have been in the mid 80s.

Not sure if the cooling fans aren't coming on sooner or if I may have a slow thermostat. I know 216* isn't that hot, but you can also see that the needle in the gauge is a little bit past the middle.

Anyone else? I know I can reprogram the ECT alarm settings, but would like to know if there is something faulty.

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Old 03-19-2015, 09:20 AM   #2
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216 for coolant is not high at all. Fan doesn't even kick on til about 224-228.

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Old 03-19-2015, 11:18 AM   #3
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I wouldn't consider that a problem.
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Old 03-19-2015, 11:37 AM   #4
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216, is not a issue!!!!!!!!

Just make sure that your overflow bottle has coolant in it.
Also your 2014 uses OAT Antifreeze. The other antifreeze's are not compatible!!!!!!!!!
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Old 03-19-2015, 11:52 AM   #5
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I was dragging the baseball field a few days ago - mid 70s and I was around 216-221 for about 30min. Once I finished and got the jeep up 55ish mph temp dropped to 200 and stayed there.
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Old 03-19-2015, 12:38 PM   #6
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216, is not a issue!!!!!!!!

Just make sure that your overflow bottle has coolant in it.
Also your 2014 uses OAT Antifreeze. The other antifreeze's are not compatible!!!!!!!!!
+1 There will be slight swings in coolant temp, based on ambient temps and load on the engine. 216-220*F in a modern cooling system is not overheating. In fact these newer engines are designed to run hot compared to the cars some of us old timers are used too. They run hot for better FE.
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Old 03-19-2015, 02:11 PM
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Thanks all for the replies. I just came back from mall crawling and it went up to 226. None of my old Jeeps did that, but then again, I just had regular analog gauges.
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Old 03-19-2015, 03:19 PM   #8
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Check your coolant overflow when the jeep has been sitting for a while, make sure there is coolant in there. There has been a recent trend in jeepa coming home with low coolant after a week or so. Most likely the system burping all the air out and the coolant drops.

If you need a top off triple check with the dealer they put the right stuff in. If they mix it with the old stuff it will turn to goop.

If you want to buy your own its pricey and must be bought at the dealer, do not mix with anything else.

But those temps aren't bad.

Last thought, going up hills and such, don't use cruise control. The computer down shifts way too much and will heat you up real quick on extended grades
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Old 03-19-2015, 03:25 PM   #9
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216, is not a issue!!!!!!!!

Just make sure that your overflow bottle has coolant in it.
Also your 2014 uses OAT Antifreeze. The other antifreeze's are not compatible!!!!!!!!!
The radiator does not draw from this bottle. Is only there as an overflow when your radiator overheat. Don't know why they our a FULL mark on there.
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Old 03-19-2015, 03:31 PM   #10
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The radiator does not draw from this bottle. Is only there as an overflow when your radiator overheat. Don't know why they our a FULL mark on there.
Why does the level fluctuate then?
Honest question not being an a$$
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Old 03-19-2015, 03:42 PM
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The radiator does not draw from this bottle. Is only there as an overflow when your radiator overheat. Don't know why they our a FULL mark on there.
The radiator does both fill/draw as the coolant heats up. If you've had an old car you know how nice it is to have a reservoir.

I can't remember if you are supposed to fill when hot or cold. I may have to consult the manual for that one.
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Old 03-19-2015, 04:23 PM   #12
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The radiator does both fill/draw as the coolant heats up. If you've had an old car you know how nice it is to have a reservoir.

I can't remember if you are supposed to fill when hot or cold. I may have to consult the manual for that one.
^^^X2, When it heats up it expands into the overflow bottle, as it cools down, the radiator draws coolant back out of the bottle into the radiator!!!!!
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Old 03-19-2015, 10:16 PM   #13
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If the radiator does not have a separate cap, it has to draw from the overflow bottle and expand back to the bottle.

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