Overheating issues 2023 JL

[Willys41]

Water wetter is one of the first things I tried. NO difference in lowing the high temps
Like I said you must have air flowing through the rad. core and the only way is to suck it though with the rad. fan. The factory cooling system is adequate to keep the jeep running cool with one exception
The factory rad. fan comes on to little to late
The RPM Extreme JL fan controller solves this issue

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[mwilk012]

Just compare other vehicles temps to the jeep wrangler. They are not running 235 and higher range
Here is a great example
The Maserati 3.0 v6 is the same motor as the the jeep 3.6 put a smaller displacement
Maserati 3.0 v6 runs at 195 degrees and also uses 5w40 oil
I will let you decide witch temp is better for your jeep motor
235+ or 195
I chose 195

The amount of misinformation in this single post alone is an example of why I feel obligated to continue to respond.

It is easy to fool a man, but impossible to convince him he has been fooled.

The operating temperature of any vehicle is a range. To start with, the pentastar engine uses a 90C thermostat. So one could, if being at all consistent, say that is the start of its range. Of course the Maserati engine that uses the same design of block and nothing else is also forced induction, requiring a higher airflow for cooling of the intercooler uses a 95C thermostat.

Most vehicles don’t even tell you what temperature it is running and simply use a red light to tell you it’s too hot. This is to avoid people doing what you’re doing when the engine can run at it’s designed operating temp for hundreds of thousands of miles.

 

[mwilk012]

There is a product called water wetter that they used to recommend in high horsepower applications. It is supposed to help with cooling.

Water wetter and products like it work by changing the specific heat capacity of the coolant itself. It does work at limiting peak temperatures.

 

[Willys41]

What ever
I along with other have decided not to run there jeeps at 235 / 240 degrees and now can do something about it
Do what you want
I chose to run mine at 195 / 200 degrees

 

[Ratbert]

Just compare other vehicles temps to the jeep wrangler. They are not running 235 and higher range
Here is a great example
The Maserati 3.0 v6 is the same motor as the the jeep 3.6 put a smaller displacement
Maserati 3.0 v6 runs at 195 degrees and also uses 5w40 oil
I will let you decide witch temp is better for your jeep motor
235+ or 195
I chose 195

As always: we can only guess as to which post you're replying to. Maybe, as you claim, you're more knowledgeable than Jeep's engineers, but I'm thinking that they would be able to figure out how to appropriately reply to posts. And, of course, how to indicate the end of sentences.

The obvious question is WTF does that video have to do with any of this?

 

[Tncdrew]

It's really something...
Some choose to try an aftermarket product that alters the cooling fan strategy to come on sooner, and at various percentages based on temperature input. This, in order to lower engine operating temps, and IMO, more importantly, lower underhood temps in order to hopefully extend the life of the myriad of plastic components that we all have to live with. A product that has proven to do these things with zero adverse affects to the engine.

Yet, there are others that choose to rant, and scold those who pursue this direction as though it's some sort of sacrilege... and doing so with an increasing level of condescension.

The thread started as a concern for overheating. An alternative was suggested. Period.

 

[mwilk012]

It's really something...
Some choose to try an aftermarket product that alters the cooling fan strategy to come on sooner, and at various percentages based on temperature input. This, in order to lower engine operating temps, and IMO, more importantly, lower underhood temps in order to hopefully extend the life of the myriad of plastic components that we all have to live with. A product that has proven to do these things with zero adverse affects to the engine.

Yet, there are others that choose to rant, and scold those who pursue this direction as though it's some sort of sacrilege... and doing so with an increasing level of condescension.

The thread started as a concern for overheating. An alternative was suggested. Period.

You can do whatever you like with your own vehicle, this is America. However, this isn’t a private conversation, and nobody is chasing the OP down in his driveway to chastise his choices. This is a public forum where disagreement and discussion occurs. These are machines, and technical accuracy matters. What you call condescending I consider a semi autistic engineering discussion.

 

[mwilk012]

As always: we can only guess as to which post you're replying to. Maybe, as you claim, you're more knowledgeable than Jeep's engineers, but I'm thinking that they would be able to figure out how to appropriately reply to posts. And, of course, how to indicate the end of sentences.

The obvious question is WTF does that video have to do with any of this?

“Nut Picking” at its finest. Find an engine that was blown apart by some kid running with zero coolant in the engine and extrapolate that out to the entire fleet of vehicles and the base cooling system design. It’s the sort of thing that Chevy vs Ford truck guys obsess over.

 

[Willys41]

It's really something...
Some choose to try an aftermarket product that alters the cooling fan strategy to come on sooner, and at various percentages based on temperature input. This, in order to lower engine operating temps, and IMO, more importantly, lower underhood temps in order to hopefully extend the life of the myriad of plastic components that we all have to live with. A product that has proven to do these things with zero adverse affects to the engine.

Yet, there are others that choose to rant, and scold those who pursue this direction as though it's some sort of sacrilege... and doing so with an increasing level of condescension.

The thread started as a concern for overheating. An alternative was suggested. Period.

Thank you
I was only informing people to what I have found with jeep cooling system and how it works. Or what I believe doesn't work.
I hope the the time and effort that I put into reducing coolant and oil temps will also benefit others seeking a salutation for there modified jeeps with high temps .
Bigger radiators and different grill inserts are not going to solve the problem.
There is a solution and it is a simple one.

 

[azjl#3]

What motor?

3.6

 

[azjl#3]

Maybe you're fine with an engine running at 230 degrees baking the hell out of all the plastic components packed around it. I think practically burning my hand touching the inside edges of the fender is rather ridiculous.
"Non-problem" IYO.
We can agree to disagree. ?

Remember, this is a forum where members can come together to discuss and compare modification ideas..... like for example, a company that makes a fan controller that alters your electric fan strategy.

If you don't agree with the conversation, you can choose simply to not participate. There are many topics on this board.

We can agree to disagree, but you can’t make up your own facts.

you state 230 bakes the heck out of the plastic, but then why does 210 all of a sudden not bake plastic? All the plastic under the hood can easily take 300 to 500 degrees. There are no cheap plastics under the hood. Any plastic over time, say 10 years and more, will become brittle. More a result of time than heat.

Fact, there is no proven evidence the fan controller helps reduce anything, wear, stress, etc. I think it does, but to what degree? Can’t prove it. You can believe it, I believe it, but the expense of the controller based on proven results is unwarranted.

I stated before, I am old school and used to think 190 was probably the best point, but that was carb days, not EFI fully computer controlled systems. While I think 210 is better, the fan is not even kicking on full until 230. Many on This forum disagree with the engineers who designed the thing, thinking their arm chair engineering ability is superior. I respond, the engineers prove these things work everyday all day at 230 for years and years and 100,000 miles and more. The arm chair wonders, have zero evidence to support their views.

 

[AVGeek99]

I'm no mechanic or thermal engineer so I have no technial expertise to offer. I do however have one comment based on experience.

I never paid attention to the actual coolant temp until I had an overheating expeience, which was the result of getting mud in the radiator fins. I spent hours cleaning it out.

Since then I have checked it in certain circumstances. Reading through this thread has put my mind at ease a bit. When I check my coolant temp it is normally in the low 200s to low 220s, sometimes cooler, rarely if ever above 225. I was worried that this was a little high and I still had some residual mud. But it seems like my Jeep is just operating within its normal range, which is relieving.

The one thing I will say regarding the temp gauge in the instrument cluster. It doesn't budge above just below half (normal reading) until the engine temp hits about 250. And then it climbs quickly if immediate action isn't taken to reduce temps. The point at which the gauage starts climbing is too high to be of much use. By the time time the needle starts climbing you're likely beyond the point of taking any corrective action other than turning it off and letting it cool. You really should be given some sort of indication that a problem exists and corrective action is needed before you reach the point of no return.

 

[mwilk012]

I'm no mechanic or thermal engineer so I have no technial expertise to offer. I do however have one comment based on experience.

I never paid attention to the actual coolant temp until I had an overheating expeience, which was the result of getting mud in the radiator fins. I spent hours cleaning it out.

Since then I have checked it in certain circumstances. Reading through this thread has put my mind at ease a bit. When I check my coolant temp it is normally in the low 200s to low 220s, sometimes cooler, rarely if ever above 225. I was worried that this was a little high and I still had some residual mud. But it seems like my Jeep is just operating within its normal range, which is relieving.

The one thing I will say regarding the temp gauge in the instrument cluster. It doesn't budge above just below half (normal reading) until the engine temp hits about 250. And then it climbs quickly if immediate action isn't taken to reduce temps. The point at which the gauage starts climbing is too high to be of much use. By the time time the needle starts climbing you're likely beyond the point of taking any corrective action other than turning it off and letting it cool. You really should be given some sort of indication that a problem exists and corrective action is needed before you reach the point of no return.

The gauge really is just decorative. It has 3 positions, cold, normal, and overheating. It playfully moves around the center to make you think it’s doing something most of the time but it is by no means a proportional gauge.

 

[azjl#3]

I’ve never seen it move off just below half, except on my jk 3.6, pulling 2000lbs up a 6% grade in 110 degree heat. I had some aftermarket temp gauge using obd plug, temp slowly climbed into the 230s and the dummy needle budged up a little, that’s also when. I heard the fan kick high and it cooled off into 220s.

 

[jav_eee]

Some choose to try an aftermarket product that alters the cooling fan strategy to come on sooner, and at various percentages based on temperature input.

The cool thing about that fan controller is that you can ask him to modify the programming to allow for the engine to run a little warmer (but still cooler than factory).

I got one as last year we had 90something days above 100 degrees and I'm just trying to give my jeep all the help it can get to survive that heat. Especially with the slow ranch/beach driving i do.

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