Coolant Temperature Gauge

Kajmcbride

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The temperature bar graph on the instrument cluster does not seem to match the reading on the Information Pages on the cluster. My bar graph will be just below the half way point when the information page is reading 194* degrees. After climbing a grade the pointer of the bar graph does not move, however the temp on the information page shows 222* degrees.

Has anybody else noticed this discrepancy between the bar graph and the Information page reading? Is 222* high when climbing grades?
Temp shot.jpg
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Kajmcbride

Kajmcbride

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Here is a picture when the coolant temperature bar graph gauge was in the same position, however the coolant temperature was 30* cooler according to the Information Pages.
IMG_0026 (1).jpg
 

automaton

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It's pretty typical for modern vehicles to have an unmoving coolant temp gauge as long as the vehicle is operating within an expected range of operation.The manufacturers do this to keep from getting "False Alarms" from people trying to judge whether their car is actually running a little hot when the gauge creeps slightly above the center line. In this day of J.D. Power Quality ratings, having someone think their Jeep is overheating when they climb a long grade can hurt their perceived quality. Not saying it's necessarily the right thing for them to do, but that's the reality of it.

220 degrees should fall within the normal operating range of most modern V6 engines.
 

Bocephus1963

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It's pretty typical for modern vehicles to have an unmoving coolant temp gauge as long as the vehicle is operating within an expected range of operation.The manufacturers do this to keep from getting "False Alarms" from people trying to judge whether their car is actually running a little hot when the gauge creeps slightly above the center line. In this day of J.D. Power Quality ratings, having someone think their Jeep is overheating when they climb a long grade can hurt their perceived quality. Not saying it's necessarily the right thing for them to do, but that's the reality of it.

220 degrees should fall within the normal operating range of most modern V6 engines.

Mine gets to 226 around town with the air on low. Its gotten to 232 climbing grades with the air off. I keep seeing posts talking about the "loud" engine fan but I have yet to hear mine, starting to wonder if my fan is even working. Does anyone know at what temp the "loud" fan kicks on? What temp is considered HOT enough to worry about overheating?
 

Stickerhead

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It will increase when you increase the A/C fan in the cab. A stupid way of doing it. Needs to be off coolant temp only. Sure someone will make a kit or add to the Tazer
 

JIMBOX

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I haven't noticed any differences--especially--+

-AT 65 MILES PER HOUR--

What the hell is wrong with you ???

You you're the reason my insurance is so high--

W.E.

JIMBO
 

TaiMc

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Mine gets to 226 around town with the air on low. Its gotten to 232 climbing grades with the air off. I keep seeing posts talking about the "loud" engine fan but I have yet to hear mine, starting to wonder if my fan is even working. Does anyone know at what temp the "loud" fan kicks on? What temp is considered HOT enough to worry about overheating?
The only time i would hear my loud fan was during startup, or when i turned the A/C on or lately when my coolant temp sensor failed and my temperature gauge in the instrument cluster rose to the highest mark for the temp (altho the engine was not hot) and stayed on when the temperature gauge decreased to the lowest setting (aka it was not accurate).

And the fan stayed on until i turned the jeep off and it was CRAZYYY loud...sounded like I was about to take off on an airstrip lol. I have a Sport and my instrument cluster looks entirely different from yours as I don't even have the technology package. However, the next time I drive, I'll check to see what the "actual" temperature is displaying and try to post it here.
 

BobW

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Here is a picture when the coolant temperature bar graph gauge was in the same position, however the coolant temperature was 30* cooler according to the Information Pages.
IMG_0026 (1).jpg
Mine (2018 JLU Rubi 6sp) shows same behavior, first really noticed a couple weeks ago crossing the Mojave.
I see the analog displays (bar and arc) both move during transition from cold start to "normal". Then no analog display changes from ~ 190 to ~ 230.
Maybe this is a modern analog equivalent of an idiot light--I guess it will only rise into top half of range when the engine is REALLY HOT [?]. Disappointing since I'd hope an analog gage would display true even if some drivers fuss and worry.
 

elchoche23

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I was about to post on the same topic; I have noticed the same in my JL. I was at the beach and activated the 4x4; sand was somewhat loose and after a few minutes, I noticed the temperature started to climb. It got to 226 which I thought was high; I stopped for a few minutes and let it cool down for a bit. When I turned it back on, I noticed the fan came full blast and the temperature quickly dropped to 190. What I don't understand of the programming logic is that the fan slows down but as the Jeep goes back to the sand, temperature rises again to the 220 area and the fan cannot be heard. It makes me feel like the fan will kick in right at that highest allowable temperature which I have no idea what it is.

I would like to have the fan come on at about 215 and keep temperatures within 195-215 but almost 30 degree difference in temperature and the fan is running very slow (if I turn it off, I can hear the fan slowly coming to a stop) or none at all.

Anyway, I hope someone understands how the fan is programmed because in the past or even my Ram (2017), the fans come on depending on the temperature range and keeps it in that range. I've yet to see 220 in my Ram, but anyway, hope someone can chime in.
 
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