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Old 01-24-2011, 12:42 PM   #1
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Outside temp display. Lowest it goes?

My Jeep is showing it's -18o celsius outside, (-1o F), but it's definitely colder then that (closer to -22C, or -8F) Does anyone know if this is the lowest it goes?

Second, somewhat related question, I took off a little fast this morning and the JKU almost seemed like it was in limp mode for the first couple minutes, as if it was still trying to warm up before it actually delievered proper power, is this normal? What's a good warm-up time, normally I wait for the RPM to settle below 1000.

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Old 01-24-2011, 12:53 PM   #2
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Have '04 TJ so don't know about the JKU issues drivability. I have seen -18* F a few years ago in my Jeep-I have recently seen -8* in the last few weeks. To my knowledge there is no min or max-have seen 114* in old garage.

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Old 01-24-2011, 12:59 PM   #3
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My Grand Cherokee was at -26 F this morning....
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Old 01-24-2011, 01:00 PM   #4
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My Grand Cherokee was at -26 F this morning....

Got to love it when 500 miles south in the States they are having colder days than we are up here in Canada.
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Old 01-24-2011, 01:07 PM   #5
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Got to love it when 500 miles south in the States they are having colder days than we are up here in Canada.
It's like this every year, nothing new. We get all the lake effect snow and it's colder here than in Erie or Buffalo ever is and they are north of us. We've been colder than Canada many times...and I still drive all year round in soft tops and doors and still plenty warm....Bradford, PA is almost always the coldest spot in PA and NY region temps...
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Old 01-24-2011, 06:43 PM   #6
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Brrrrrrrr

-32 this morning
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Old 01-24-2011, 06:49 PM   #7
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Had -6F this morning but what i do find is it to always reads around 5 degrees warmer than what my house and store thermometer are reading, and its slow to adjust. It has never seemed to work right from day one. 2010 JK. Cant really expect much from a sensor that seems to be made of cheap plastic and is mounted in a spot that takes some abuse, but even after sitting for long periods of time it just is not accurate in anyway.
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Old 01-24-2011, 07:22 PM   #8
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Why, it's partly cloudy and 28 up here in Anchorage, Alaska
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Old 01-24-2011, 07:36 PM   #9
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70║ in FL. Sorry...
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I tried to be good, but I got bored...
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Old 01-24-2011, 08:12 PM   #10
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That sluggishness is oh too familiar for me in my unlimited. I was actually meaning to start a thread to ask the following question but it will fit in here. Does the jk have a cold start rev limiter? I ask because whenever I start it in cold temps it will not go past 2.5k rpms, even if floored! That is until warmed up slightly or driven. It makes some sense to do this but don't know if it's a feature or something wrong. If I try to drive while it's doing it I get that sluggishness that was mentioned before. If it is supposed to do it then it's only for AT because my 6 speed 2 door doesn't do it. It revs freely. Anyone have any thoughts on this?
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Old 01-24-2011, 10:21 PM   #11
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Originally Posted by Mr-Ford-drives-a-Jeep View Post
That sluggishness is oh too familiar for me in my unlimited. I was actually meaning to start a thread to ask the following question but it will fit in here. Does the jk have a cold start rev limiter? I ask because whenever I start it in cold temps it will not go past 2.5k rpms, even if floored! That is until warmed up slightly or driven. It makes some sense to do this but don't know if it's a feature or something wrong. If I try to drive while it's doing it I get that sluggishness that was mentioned before. If it is supposed to do it then it's only for AT because my 6 speed 2 door doesn't do it. It revs freely. Anyone have any thoughts on this?
That's exactly describing the limp mode I was describing for the first few minutes.
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Old 01-25-2011, 10:34 AM   #12
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I let mine warm up for 2-3minutes. Then I am able to rev freely, I do have the 6 speed so like someone mentioned maybe it is an issue with the auto's?
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Old 01-25-2011, 01:12 PM   #13
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I know that my 2010 2 door Rubicon with AT does have a Rev limiter. Even when warm/hot it will not even come close to red lining while in park, I've only tried because I've got a Monster exhaust and wanted to show it off, kinda a pain, even though I'm sure it's better for the engine... And yes when it's cold it won't rev much at all... I've never had any problem once I'm in drive, it always seems to have all it's power at that time. but then again I almost always warm it up for at least 5 minutes (i've got remote start)...come to think of it I've never tried to drive it when it's still downright cold...
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Old 01-25-2011, 06:19 PM   #14
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I typically warm it up when I'm leaving home but with it being near zero in the afternoons when leaving work I start noticing things like this. I leave work and I just wanna drive home! I suppose I can give it a few minutes...
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Old 01-25-2011, 06:38 PM   #15
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Every Mopar vehicle I have owned with an onboard temp display stopped at -40.

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