Overheat at Idle - JeepForum.com
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post #1 of 8 Old 03-02-2020, 06:30 PM Thread Starter
JackB1
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Overheat at Idle

It was about 50 degrees out and I had come back home and left my "new to me" 2014 WK 3.6 idling for a bit. The temperature gauge is normally exactly on the second mark up. This time however after idling for a few minutes it went up another 2 marks which caught my attention. Now before anyone says "do a search" I have done that and watched YouTube videos. Seems to be either the radiator fan not coming on or a bad thermostat. [anti freeze is fine]. Today I decided to let it idle a while [10 minutes] to see if I could get a repeat but the temp gauge did not go above the normal spot. I also put on the AC to test fan function and saw that the radiator fan was running.
So I am just looking for an opinion. Do you think this could be the beginning of a part failure or just an anomaly and I should do nothing unless things get worse?

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post #2 of 8 Old 03-02-2020, 07:10 PM
ColdCase
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Probably normal, but thermostats can stick intermittently, so can relay contacts, and the water pump drawing in air. So can temperature sensors. Belts can slip that spin the water pump. There can be air in the system that causes the sensor to read high when its in a bubble. As with any intermittent, you may want to wait till it happens again. After all its normal for these to seem to run hotter than you expect.

So check the coolant level, keep an eye out for leaks. If its std cooling, the fan has two speeds and sometimes the second speed fails.

If it still has some kind of warranty from the seller, you may want to mention it to them.

I just got lost in thought. It was unfamiliar territory;
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #3 of 8 Old 03-03-2020, 09:27 AM
Jurassic_Jeep
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if it goes up from above 1/4 to just below 1/2, then drops. Normal operation during idle. Its not a "dummy temperature gauge", it is actually reading the temperature. Stick your head out the window, you'll hear the fan kick in just before it hits half.
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post #4 of 8 Old 03-03-2020, 07:25 PM
diverscale
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agreed, probably normal, gauge moves, and is higher at idle for my 2020
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post #5 of 8 Old 03-05-2020, 02:38 PM
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Quote:
Originally Posted by JackB1 View Post
It was about 50 degrees out and I had come back home and left my "new to me" 2014 WK 3.6 idling for a bit. The temperature gauge is normally exactly on the second mark up. This time however after idling for a few minutes it went up another 2 marks which caught my attention. Now before anyone says "do a search" I have done that and watched YouTube videos. Seems to be either the radiator fan not coming on or a bad thermostat. [anti freeze is fine]. Today I decided to let it idle a while [10 minutes] to see if I could get a repeat but the temp gauge did not go above the normal spot. I also put on the AC to test fan function and saw that the radiator fan was running.
So I am just looking for an opinion. Do you think this could be the beginning of a part failure or just an anomaly and I should do nothing unless things get worse?
@JackB1 ,
Thanks for sharing this here, we are sorry to hear that you are experiencing this trouble. If your concerns continue to become more prominent, we do recommend having your vehicle diagnosed by a certified dealer. If you decide to go this route, our team would be happy to assist you during your visit.

Kathryn
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post #6 of 8 Old 03-05-2020, 06:51 PM Thread Starter
JackB1
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Thank you. The frustrating part of this story is that I purchased a "Certified Dealer" vehicle and the 3 month warranty just expired. Hopefully it is within the normal operating range and will not become an expensive repair.
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post #7 of 8 Old 03-07-2020, 04:13 PM
rjlindblom
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It is is normal, and going up and down, the thermostat is going its job. If it is overheating or the temp goes down when driving, the water pump night need to be replaced.

Ryan
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2016 Compass. Traded 12-27-2019
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post #8 of 8 Old 03-19-2020, 09:58 AM
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Quote:
Originally Posted by JackB1 View Post
Thank you. The frustrating part of this story is that I purchased a "Certified Dealer" vehicle and the 3 month warranty just expired. Hopefully it is within the normal operating range and will not become an expensive repair.
We fully can understand your frustration! Please know that our team is always just a private message away.

Kathryn
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