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Old 12-08-2013, 12:09 PM
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2014 GC Overland Temperature Regulation

Can anyone tell me if there's a thread regarding the poor temperature regulation I'm experiencing in my 14 Overland? For the first 5-10 minutes of driving the heater "roasts" me likes its on full hot, then it seems to figure out that I actually have the temp set to 71, then it gets too cold, then it gets too hot, then it gets too cold, and so on. The system just does not maintain a nice constant cabin temp. Up here in Minnesota when the temp is -5 to -10 right now it is very apparent that this is happening.

I did a quick search but didn't find anything. The GC goes to the dealer tomorrow for a squeaky blower and I was wondering if there was anything I could have them do while it is in.

Thanks!!
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Old 12-08-2013, 01:58 PM
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Quote:
Originally Posted by Zoggan View Post
Can anyone tell me if there's a thread regarding the poor temperature regulation I'm experiencing in my 14 Overland? For the first 5-10 minutes of driving the heater "roasts" me likes its on full hot, then it seems to figure out that I actually have the temp set to 71, then it gets too cold, then it gets too hot, then it gets too cold, and so on. The system just does not maintain a nice constant cabin temp. Up here in Minnesota when the temp is -5 to -10 right now it is very apparent that this is happening.

I did a quick search but didn't find anything. The GC goes to the dealer tomorrow for a squeaky blower and I was wondering if there was anything I could have them do while it is in.

Thanks!!
Let us know how it goes. My wife's is haveing the same issue only it dowsnt get cold. It will roast you out no matter wat until you run the temp all the way cold and then back up to what you want it set to.
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Old 12-09-2013, 06:06 PM
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Re: 2014 GC Overland Temperature Regulation

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Originally Posted by loveracing1988 View Post
Let us know how it goes. My wife's is haveing the same issue only it dowsnt get cold. It will roast you out no matter wat until you run the temp all the way cold and then back up to what you want it set to.
It seems to work only slightly better than the ATC on the early 90s GCs.

The problem is that either in the summer or in the winter, it doesn't maintain significant air flow once the cabin is more or less at target temperatures. The fan speed only seems to change once it has wavered above or below by several degrees, enough to make you reach for the RightGuard or the mittens.

I use the ATC mainly to keep it from freezing my nose when the engine first comes on, but once it has reached reasonable cabin temperature I go to the climate controls and take it out of auto and select front windshield and feet as the outlets, and then
modulate the fan speed to keep the front window clear and adjust the temperature up/down to be comfortable.

It will let stuff freeze on your windshield if you leave it in auto when it is well below freezing and hit freezing rain, slush, etc.
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Old 12-10-2013, 11:08 AM
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Dealer ordered a new blower motor to fix the chirping sound. Service writer shrugged his shoulders and made some comment about how because of the dual zone this and the atc that......bottom line is he didn't seem to think there's a problem with it. Had to get a little assertive with them and told them there IS a problem with it, maybe it works as designed but if thats the case its a poor design. None of my GM atc's ever had this wide of an operating range. Anyway, they're going to check it when I bring it back for the blower. Not holding my breath though!
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Old 12-10-2013, 05:28 PM
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Re: 2014 GC Overland Temperature Regulation

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Originally Posted by Zoggan View Post
Dealer ordered a new blower motor to fix the chirping sound. Service writer shrugged his shoulders and made some comment about how because of the dual zone this and the atc that......bottom line is he didn't seem to think there's a problem with it. Had to get a little assertive with them and told them there IS a problem with it, maybe it works as designed but if thats the case its a poor design. None of my GM atc's ever had this wide of an operating range. Anyway, they're going to check it when I bring it back for the blower. Not holding my breath though!
Anyone know where the cabin temperature sensor intakes are for the dual zone system?

On older jeep ATCs there was a little inlet with a small fan that sampled cabin temperature... that little fan wasn't as reliable as it could have been... but on a dual zone you'd expect there to be two sampling points. Haven't found either yet.
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Old 12-11-2013, 02:29 PM
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Re: 2014 GC Overland Temperature Regulation

I have this issue aswell and have kicked the dead horse over it again.

Below is a cut-n-paste from a reply, but to answer some questions;

In the shop for a couple of days with this "problem".

I was told the Limited and higher models have four sensors inside (dual zone ), laredo 1 or 2 (?) for a single zone

My sensors had a range of 70ish, 85ish, 105ish and 85ish. I don't know if that translates to degrees, but that would be too logical. They agreed that is was strange that cold air would come out with a 80 setting, but as the manual says that this "manual" mode is basically Automatic except the blower setting.

With that in mind, with a hot cabin this manual mode will try to reach that 80 by any means....even if you get cold air blowing out

I just want a real manual mode, up is hot, down is cold. I'm smart enough to regulate it myself.

In addition to that problem, I feel it changes temp output depending on if you're highway or city driving. High RPMS it gets hot...too many variations in temp

Dealer says its normal. I have now set it to 82 plus and/ or high and just regulate the window crack or vent blower speed.

Good luck,
Al
p.s. here's my cut-n-paste from previous thread.
-----------------------------------------------
The HVAC system is a FAIL for me. Sure it works somewhat... when the windows are up and you're cruising on the highway.

Today while driving with the sunroof open, 35 degrees outside with sun. Set at 80 on "manual" mode....oh sorry, pseudo manual. 10 minutes of hot, 10 minutes of fan, 10 minutes of cold air....and repeat. Reduce 10 minute interval to 5 minutes if you're changing the RPM's a bit.

Yes, I know I've written about this before and I hope I find that "ah-ha" moment soon on why the Jeep was designed that way.

Dealership says the Laredo Jeep functions as you would think....manual, But Limiteds and up ( maybe due to the 8.4a) function in this pseudo-manual.
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Old 12-11-2013, 06:25 PM
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Re: 2014 GC Overland Temperature Regulation

I kind of had an issue with it at first but now I kind of got used to it.

Although I have not been in sub 0 F weather yet. It's only in the 20's now and it seems fine.

At first I'd keep chasing it. When it was in "Roast mode" I'd turn it down and it would be too cold. Then turn it up and go into roast mode again and be too hot.

So now I try to just leave it on 70. With Fan on 2.

It seems to be quite reasonably comfy now with maybe a short roast period I just ignore and then settles down and seems fine.

So I hardly ever touch it now.

It's definitely different.

Kind of like the transmission. The more you think about it, or try to compensate the worse it is. If you just ignore it, it seems fine. Most of the time
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