Is overheating an issue?

AZ-Chris

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Elevation does factor in.

The density of the air flowing through the cooling stack is lower so less heat gets pulled out.
Arizona is notorious for placing huge demands on vehicles due to the high ambient temperatures, elevation and severe mountain grades.





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sourdough

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My simple DIY hood hinge extension vented underhood hot air really well. I also pulled the plastic engine cover, hood sound liner and installed the JT grill screen.
hood hinge extension a.jpeg
hood hinge extension c.jpeg

works for me
JLR next to D6 dozer b.jpeg
 

AZ-Chris

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Typically, people in Arizona that regularly tow will install an additional oil cooler. Not sure if that is currently available for our EcoDiesel.
 

No Spark V6

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Serious question... if the hood scoops and/or a larger heat exchanger in the grill solved the problem, don't you think jeep would've done it from the factory? I know sometimes r&d doesn't happen due to budget/timeline to get the product to market, but those two options seem like it would've been easy enough for them to address if it had significantimprovements. I think the limiting factor is the frontal opening of the grill only allows so much airflow. I could see opening the existing fake vents maybe helping pull some airflow, but I read jeep didn't do that because of the water that would then drain in the engine bay on certain electronics.
 

DEZELJP

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I think D & J Diesel have the right approach. Same fix as the Ram and Grand Cherokee. Delete the little cooler on the motor. Keep the oil hot in the motor until it reaches about 245 degrees than release it to a separate cooler out front of the radiator. You don’t want your motor cold but I don’t want it as hot as it is. But I’m not towing with the Jl, I’m just beating on it. The other helpful approach is upgrading the turbo to run cooler. But I’m not ready to go there yet.
 

Plongson

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I made my hood vents functional and here's my answer to water ingress...I bought some marine grade vinyl, made a template and had a local seamstress sew covers. I found stainless marine grade snaps on Amazon and...VIOLA!!
Pop them on in an instant, roll 'em up and tuck them under the seat when not needed.

The delta in the coolant temp reading is very noticeable with functional vents. I believe every little thing will help reduce the temp issue with this little motor...

20210715_063504.jpg
 

DEZELJP

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Perfect, “Built not Bought” love it
 

AZ-Chris

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On my way to Salt Lake City today and on two separate highway climbs of 6% or greater I’ve seen 251 degrees F on my oil temp as I crested the hills. I’m not towing, and I’m able to maintain my cruising speed of 75 mph (the speed limit). Thankfully no engine codes or power reductions.

The 37” tires and lift have taken a noticeable performance toll as it’s not accelerating nearly as quickly as it used to on these grades. The heavy wheels are quite obnoxious on road imperfections too.
 

WXman

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I towed my 8.5x24' enclosed trailer (6,000 lbs. on the CAT scales) 500+ miles round trip to the Badlands Off Road park last month. It was hot as hell and humid too. High heat index. The EcoDiesel ran <230F coolant and <220F trans temps the entire trip. Granted, we're not at high elevation here in Kentucky/Indiana but I was totally maxed out on payload, trailer weight, axle weight, etc. and it was smoking hot outside.

I don't see an issue with the EcoD in these rigs. TFL had a new F-150 and a new Silverado overheat recently while towing at elevation, and both of those trucks had the most powerful powertrains offered. Elevation is the killer.
 

AZ-Chris

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I have consistently found oil temperature to be higher than both coolant and transmission, even around town. These photos were taken last weekend while cresting 6-7% grade highways at 70+ mph in Arizona and Utah . . . and YES, elevation is a huge factor when towing and I WASN'T TOWING . . .

IMG_1241.jpg


IMG_1259.jpg
 

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