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  #37  
Old 03-10-2016, 06:36 PM
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Re: Cooling problems on hills

This issue has been the subject of several threads over the past two years, and I have posted my experience a couple of times. In a nutshell, my temp gauge also reaches about a needle's width from the red zone, then stabilizes, as I tow up long grades. I have now towed for 15,000+ miles, including over numerous passes in the Rocky Mountains and Canadian Rockies and never had the car overheat. A good friend towed his 5500 lb travel trailer up the 11-mile 11% grade out of Skagway and did not overheat.

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  #38  
Old 03-29-2016, 10:32 PM
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Re: Cooling problems on hills

Quote:
Originally Posted by RonMcGr View Post
Hi Guys,

We have a new Ecodiesel 8 speed and I think it is the best Vehicle I've ever owned
Given that I bought my first car in 1967 and have owned 25 cars from then until 2013, that is high praise for a Jeep.

The only problem I have with the car is keeping it cool, when towing.
I live in Australia and tow a 2.6 tonne caravan.
The Jeep does it with ease and returns a fantastic fuel mileage of 13.5 litres per 100 km, when towing.



This is it all hooked up and ready to go.
BTW I removed the "grill" under the nudge bar, to get better air flow.

On the highway and over small hills the engine temperature is fine. Once we start climbing a range, the temp gauge rises almost to the red area, then drops as quick as it goes up, when going down the other side.

I'm wondering if any one else has this problem?

I suspect a bigger electric fan would help, or, an addition fan in front of the radiator area.

Any idea's out there?

Cheers,
Ron
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  #39  
Old 03-30-2016, 11:59 AM
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Re: Cooling problems on hills

Unless it goes into limp mode ignore the temps. Oil is good for 300f and this engine and transmission is designed to run hot.
If you went into limp mode then you have a problem. This engine will defuel if it gets too hot.
This has been reported in OZ and here in the US countless times but I have yet to see one report of going into limp mode...


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  #40  
Old 04-04-2016, 07:09 PM
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Re: Cooling problems on hills

I have written about this before. I think the cooling system is undersized. I only tow a 2500lb trailer. Highest temps I have seen going up a hill. Tranny about 205-210 degF and the oil I have seen 255 degF. Even if I'm on flat land towing into a headwind the temperature rises. Recovers very quickly if I go down hill. Something is wrong here!
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