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Old 08-05-2014, 05:38 PM
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Coolant temps

Just wondering do you guys ever see 230 degrees coolant temp? thanks
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Old 08-05-2014, 05:50 PM
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Re: Coolant temps

I would have to watch my wife's Cherokee more closely, but that sounds pretty high to me. My 3.6 wrangler stays steady at 201 - 203, but that's about it, 230 sounds way too high to me.
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Old 08-06-2014, 08:00 AM
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Re: Coolant temps

I have the 2.4. I see 230+. Was told it is normal.
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Old 08-06-2014, 02:05 PM
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Re: Coolant temps

Quote:
Originally Posted by Steveinmedford View Post
I have the 2.4. I see 230+. Was told it is normal.
Wow, sounds high, my wife's Cherokee is the 3.2, so might be completely different. But I'll check it out and let you folks know.
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Old 08-07-2014, 05:42 AM
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Re: Coolant temps

Sounds a bit high but......
It depends a lot on your driving.
That is stop and go, especially on a hot day I could see 230 easy.
Heavy duty driving etc could push that also.
The I4 might run a bit higher operating temp because it works harder.
But that is all relative as long as the vehicle stays within the limits.
My V6 will run 198-210 depending on conditions such as stop and go and trailer Towing.
I do not dwell on the temp other than the gauge in my cluster that has no digital temp listed.
If it gets much over to the right of center then it bears watching. Its what is normal for your vehicle.
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Old 08-07-2014, 07:30 AM
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Re: Coolant temps

Since your post I have been monitoring my TH V-6 and in around town driving with low 80's out side I have yet to see it go over 206 degrees. On the highway doing 70 MPH it stays at 202.
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Old 08-08-2014, 08:28 PM
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Re: Coolant temps

2.4 here and temps usually hover 190-203F. Never seen anything over 205F.
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Old 08-09-2014, 09:01 AM
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Re: Coolant temps

3.2L here - so it has the heavy duty cooling. Coolant temps range 198 - 204 here in normal city/highway driving in (ab)normal Arizona daytime temps of 90s to 110s.

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Old 08-17-2014, 04:37 PM
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Re: Coolant temps

After a few days of keeping an eye on my wife's 3.2, I have never seen it above 203. Here in NJ we haven't had extremely hot weather, but with temps in the high 80's on a daily basis, and living in the northern hills, so it works a little, 203 was the big number for me.
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Old 09-24-2014, 10:07 PM
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Re: Coolant temps

Yesterday I ran the coolant temp in our Cherokee Limited 3.2 up to 228.

Doesn't get this high very often. Today it was around 200 much of the day with ambient temp as high as 88 degrees.

Why did the temp get up to 228 yesterday? Well, we drove the 19 miles up Pikes Peak.

Coming down was more fun. Brake temps got pretty high and we had to let them cool.

GR
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Old 09-25-2014, 01:45 AM
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Quote:
Originally Posted by grandriver125 View Post

Coming down was more fun. Brake temps got pretty high and we had to let them cool.

GR
What's your opinion of the Cherokee's engine braking as you were coming down? I forgot, do you have a 4 or 6 cylinder?
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Old 09-25-2014, 07:43 AM
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Re: Coolant temps

3.2L

Sure doesn't work like a manual as you have to get used to the delay. The brakes got hot (there is a stop a couple of miles from the top and they check them) and we had to let them cool off for a half hour. There was another Cherokee there cooling off as well. The rest of the way down we used 1st and 2nd a lot and they did not heat up too much. I carry an infrared thermometer so could verify the temps the Ranger got and check them further down the mountain.

We used 1st and 2nd a lot the next day as well.

I should have known better than to ride the brakes as I'm very careful not to do that in our motorhome. Some brain fade. No brake fade fortunately.


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