Average coolant temp

[HK1s]

From the look of things It like to stay above 194(90c and the highest I have seen is 226(108c during long idle and slow crawl.

I constantly check the temperature because when it reaches operating temp I can smash the pedal a little. Looking at both oil and coolant, there usually isn't too much difference after running for a while.

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[mwilk012]

Are you guys who are seeing temps in the 230’s just not using your A/C at all?

 

[HK1s]

Are you guys who are seeing temps in the 230’s just not using your A/C at all?

in Canada rarely, plus driving a jeep I have peer pressure to keep the window fully down whenever possible. When I do use AC and check temp its around 200F

 

[Gorilla57]

It was 104° on the way to happy hour and had the AC cranked. Coolant varied from 188° to 200° in city traffic and on the interstate. Fan really cranks when it’s hot out and AC on. One thing that could skew the results for me vs others…..I have the Poison Spyder hood vents. Installed those right after I got the Jeep.

 

[Capricorn]

I have Willys Xtreme Recon. When all warmed up, on highway I see around 195-203F, on streets stop and go or uphill up to 233F. But as soon as it hits 230F, the fan kicks in and brings it down to 221F. Wash, rinse and repeat.
My wife has a JLU Sport Altitude and that runs about 5F cooler than mine in the same conditions.
Both 2023 3.6L with Etorque.

 

[Capricorn]

Are you guys who are seeing temps in the 230’s just not using your A/C at all?

I am using AC but set it to auto at 75F. On a hot day above 90F, it runs cooler around 220F in city. On cool days, around 75-80F, it runs hot up to 230F.

 

[mwilk012]

in Canada rarely, plus driving a jeep I have peer pressure to keep the window fully down whenever possible. When I do use AC and check temp its around 200F

roll down all 4 windows and set the AC on max with floor vents only. engine temps will stick around 195.

 

[flyer92]

FWIW, the oil temp (not coolant temp) in my 3.6L topped out at 248 degrees this afternoon with the A/C off. Definitely got my attention because I rarely see temps exceed 230. However, I was driving up a 5-6% grade for 18 miles at 55 mph and air temp was between 100 degrees in the valley and 73 degrees on top of the mountain, but I think this may be typical for that driving condition.

Radiator is clean and I also have JT grille mesh installed, so I'm not convinced that it really provides as much additional air flow as we think. All that said, it's really interesting that the needle in the analog temp gauge always points to one tick mark below half, no matter what the actual temps indicate. Just curious if others have had the same/similar observations during similar driving conditions.

 

[Capricorn]

FWIW, the oil temp (not coolant temp) in my 3.6L topped out at 248 degrees this afternoon with the A/C off. Definitely got my attention because I rarely see temps exceed 230. However, I was driving up a 5-6% grade for 18 miles at 55 mph and air temp was between 100 degrees in the valley and 73 degrees on top of the mountain, but I think this may be typical for that driving condition.

Radiator is clean and I also have JT grille mesh installed, so I'm not convinced that it really provides as much additional air flow as we think. All that said, it's really interesting that the needle in the analog temp gauge always points to one tick mark below half, no matter what the actual temps indicate. Just curious if others have had the same/similar observations during similar driving conditions.

The needle goes up the half mark only when the coolant temps rise above 240F (approximately) or more. I saw it go up slightly above half only once in stop n go traffic on a warm Vegas afternoon for a few seconds before the fan kicked in. It is calibrated for a range of temps to be in that same position (slightly below half). The 240F is my not-so-accurate personal observation - not sure what that exact calibrated temp might be that will push upward than the normal position.

I noticed that my Jeep runs the hottest in high 70s F or low 80s F ambient temp with Climate setting in auto mode (74/75F). In the 90s F and above, the A/C is running more frequently and remains on for a longer time so the fan keeps running along with it.

 

[flyer92]

The needle goes up the half mark only when the coolant temps rise above 240F (approximately) or more. I saw it go up slightly above half only once in stop n go traffic on a warm Vegas afternoon for a few seconds before the fan kicked in. It is calibrated for a range of temps to be in that same position (slightly below half). The 240F is my not-so-accurate personal observation - not sure what that exact calibrated temp might be that will push upward than the normal position.

I noticed that my Jeep runs the hottest in high 70s F or low 80s F ambient temp with Climate setting in auto mode (74/75F). In the 90s F and above, the A/C is running more frequently and remains on for a longer time so the fan keeps running along with it.

Hey neighbor! Appreciate the feedback from a fellow Jeeper in my area. The drive I described above was up to Lee Canyon so we could hike the Bristlecone Loop. Was beautiful and cool at only 73 degrees...a nice respite from the oppressive heat in the valley.

Given the weather and driving conditions in our area, have you ever seen the oil temp exceed 248? I've read elsewhere that it should never exceed 250, so I was admittedly a little concerned.

 

[Capricorn]

Hey neighbor! Appreciate the feedback from a fellow Jeeper in my area. The drive I described above was up to Lee Canyon so we could hike the Bristlecone Loop. Was beautiful and cool at only 73 degrees...a nice respite from the oppressive heat in the valley.

Given the weather and driving conditions in our area, have you ever seen the oil temp exceed 248? I've read elsewhere that it should never exceed 250, so I was admittedly a little concerned.

You are welcome!
241F is the highest I see (quite regularly) on driving uphill in high 70s or low 80s outside temperature in my Wrangler. But on my previous Gladiator Rubicon last year, I touched 245F+ in Red Rock Canyon hills.
As long as you did not get a warning come on display (hot oil or coolant temp warning), don't worry. The Jeep will warn you with a chime if you reach or exceed unsafe temps.
Since we are using synthetic engine oil, I won't worry too much on oil temps close to 250F specially if you did not see a warning chime come on the dashboard display.

This is from a short drive on Summerlin Parkway I took a pic last fall which is my daily commute.

From the owner's manual:

 

[flyer92]

You are welcome!
241F is the highest I see (quite regularly) on driving uphill in high 70s or low 80s outside temperature in my Wrangler. But on my previous Gladiator Rubicon last year, I touched 245F+ in Red Rock Canyon hills.
As long as you did not get a warning come on display (hot oil or coolant temp warning), don't worry. The Jeep will warn you with a chime if you reach or exceed unsafe temps.
Since we are using synthetic engine oil, I won't worry too much on oil temps close to 250F specially if you did not see a warning chime come on the dashboard display.

Many thanks for the advice/observations. Like you, I referenced the owner's manual, but it's nice to validate it with what other drivers are experiencing in the wild, especially those in the same area with the same environmental/driving conditions. I do think it's interesting that many of us run the A/C in these situations just to run the fan more often/longer, yet the manual advises to shut it off in the event of a coolant warning. Regardless, I guess it still makes sense to run it until the warning light illuminates.

That 239 degree oil temp on Summerlin is pretty surprising. Since it is your daily commute, is this something you noticed on a regular basis or was it just an isolated incident? If the latter, why do you think it occurred?

Apologies to OP and everyone else on this thread....I didn't intend to hijack it, but just thought the discussion would help provide some additional insight on the engine cooling issue. Glad to start a separate thread if desired. Happy Jeepin' all and stay cool! ?

 

[Capricorn]

Many thanks for the advice/observations. Like you, I referenced the owner's manual, but it's nice to validate it with what other drivers are experiencing in the wild, especially those in the same area with the same environmental/driving conditions. I do think it's interesting that many of us run the A/C in these situations just to run the fan more often/longer, yet the manual advises to shut it off in the event of a coolant warning. Regardless, I guess it still makes sense to run it until the warning light illuminates.

That 239 degree oil temp on Summerlin is pretty surprising. Since it is your daily commute, is this something you noticed on a regular basis or was it just an isolated incident? If the latter, why do you think it occurred?

Apologies to OP and everyone else on this thread....I didn't intend to hijack it, but just thought the discussion would help provide some additional insight on the engine cooling issue. Glad to start a separate thread if desired. Happy Jeepin' all and stay cool! ?

I have my AC/Climate set on auto for 74F or 75F. When ambient temp is in the 70s or low 80s, I see oil temps regularly around 235F in that ambient temp range. When ambient temps are lower than what is set on my auto settings, some of the engine heat is transferred to the cabin and cooler temps outside also cools the engine and coolant. When ambient temps are much higher than the set 74/75F for the cabin, then the A/C is running most of the time, and hence the fan is also running.
It is when the ambient temp is close to the desired like in the 70sF, then neither the A/C is running nor is engine heat transferred into the cabin. It is at this outside temp when I consistently have oil temp easily shoot up to 230s.

I was concerned about this and I got it checked at the dealership. They said it is normal and gave me a print out on when the fan kicks in. It is a pretty complex algorithm the computer uses. I don't have that print out in digital format but it was the same as posted by one of the posters on one of the temp threads in this forum. Here's the link.

https://www.jlwranglerforums.com/fo...the-normal-operating-temp.71287/#post-1754066

 

[Capricorn]

Many thanks for the advice/observations. Like you, I referenced the owner's manual, but it's nice to validate it with what other drivers are experiencing in the wild, especially those in the same area with the same environmental/driving conditions. I do think it's interesting that many of us run the A/C in these situations just to run the fan more often/longer, yet the manual advises to shut it off in the event of a coolant warning. Regardless, I guess it still makes sense to run it until the warning light illuminates.

That 239 degree oil temp on Summerlin is pretty surprising. Since it is your daily commute, is this something you noticed on a regular basis or was it just an isolated incident? If the latter, why do you think it occurred?

Apologies to OP and everyone else on this thread....I didn't intend to hijack it, but just thought the discussion would help provide some additional insight on the engine cooling issue. Glad to start a separate thread if desired. Happy Jeepin' all and stay cool! ?

For your peace of mind, read this post also. While the thread is about coolant temps, if the coolant temp is within spec or under normal range, then oil temp which is usually about 10 degrees more when warmed up, is also under normal operating temp.

https://www.jlwranglerforums.com/fo...-the-normal-operating-temp.71287/post-1490759

 

[SavannahAL]

FWIW, the oil temp (not coolant temp) in my 3.6L topped out at 248 degrees this afternoon with the A/C off. Definitely got my attention because I rarely see temps exceed 230. However, I was driving up a 5-6% grade for 18 miles at 55 mph and air temp was between 100 degrees in the valley and 73 degrees on top of the mountain, but I think this may be typical for that driving condition.

Radiator is clean and I also have JT grille mesh installed, so I'm not convinced that it really provides as much additional air flow as we think. All that said, it's really interesting that the needle in the analog temp gauge always points to one tick mark below half, no matter what the actual temps indicate. Just curious if others have had the same/similar observations during similar driving conditions.

"All that said, it's really interesting that the needle in the analog temp gauge always points to one tick mark below half, no matter what the actual temps indicate."

Same here! My 2018JL 3.6L that I had almost monthly overheating problems with had the same issue. No matter what- the analog gauge stayed in the same place. It was boiling over at a rest stop and it stayed the same = 1 notch below half. I also had a technician say to at the Savannah Jeep dealership, "don't pay attention to the analog gauge."

Now with my 2022 Wrangler EcoDiesel I've also noticed the same thing. Although I've had no overheating issues I had a 130 yard asphalt drive tore up and I decided to haul it to the dump myself. Big mistake. My point is, no matter had much I hauled at one time (I made about 20 trips) the gauge also never moved from 1 notch below half. I would think under a heavy load it should go up some.

I guess the question for other forum members, has their analog gauge varied at all while towing or overheating?

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