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Old 08-23-2017, 05:57 PM
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What your running temps?

Noticed for the last 3 days I have a bad smell from my jeep when I turn it off after driving, almost like trans fluid smell. Checked my temps and engine is at 226 and trans it at 226, 20k miles on my jeep. I know my temps are definitely higher then normal right now but wanted to see what everyone else's is. Also current temp outside is 75 degrees.

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Old 08-23-2017, 06:02 PM   #2
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Point to note - your auto trans temp will actually show the engine coolant temp when switched in to PARK - so, check that with the transmission in a gear other than "P" because an auto-trans fluid temp at 226 would be a warning something is wrong.

With that said - are you lifted? Any mods?

I run between 195 and 205 regularly - but when out on the beaches this past weekend, I went as high as 225 (slow moving and was close to 95 out).

Also - how's your coolant level? Check it when hot. Perhaps maybe a bad thermostat?

If all that checks out - first thing I would do is get a pressure washer and hose off the AC condenser / radiator from the FRONT of the Jeep. You'd be amazing how much of a difference a clean radiator can have on cooling performance.

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Old 08-23-2017, 06:16 PM
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Good call on the trans temp in park changes when in drive, I'll have to go back out and drive it. Ran to the store 10 mins away and back and noticed the smell again when I got out. My condenser and radiator are clean as a whistle never been thru any mud etc and always rinse it when I wash my jeep.
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Old 08-23-2017, 06:26 PM   #4
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Originally Posted by itr.#1446 View Post
Noticed for the last 3 days I have a bad smell from my jeep when I turn it off after driving, almost like trans fluid smell. Checked my temps and engine is at 226 and trans it at 226, 20k miles on my jeep. I know my temps are definitely higher then normal right now but wanted to see what everyone else's is. Also current temp outside is 75 degrees.
They run hot coolant temps, the fan comes on at 226F I believe, so they consider that within the normal range.

226F for transmission is hot, they normally run +/- 170F. Check the fluid level, it might be low, or the cooler is blocked with dirt or not working properly. If you are just cruising and trans temps are 226F that's something to be concerned about. The smell is your transmission fluid getting a bit too hot. Once you get it sorted out, I'd suggest changing the ATF and the filter.
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Old 08-23-2017, 08:55 PM   #5
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my 2014 auto jku with ac runs between 205-220. Transmission is usually around 170-180F
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Old 08-23-2017, 10:40 PM   #6
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Originally Posted by nighowl2000 View Post
my 2014 auto jku with ac runs between 205-220. Transmission is usually around 170-180F
That's about right. The OP's transmission temps are too high though.
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Old 08-24-2017, 12:08 AM   #7
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My LJ sits at 210 and never moves after warming up
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Old 08-24-2017, 06:05 AM   #8
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My LJ sits at 210 and never moves after warming up
Those were the days. I'd be a happy camper if my JK ran at the temps any of my other vehicles, did or do. This is the hottest running vehicle I've ever owned, and being old school it spooks me a bit. I have to keep repeating to myself it's normal, it's normal! LOL
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Old 08-24-2017, 07:16 AM   #9
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That's about right. The OP's transmission temps are too high though.
We need to know what the actual temps are when the OP is not reporting his temps in while in "P"
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Old 08-24-2017, 09:24 AM   #10
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Those were the days. I'd be a happy camper if my JK ran at the temps any of my other vehicles, did or do. This is the hottest running vehicle I've ever owned, and being old school it spooks me a bit. I have to keep repeating to myself it's normal, it's normal! LOL


That's funny because when I got my Jeep I felt like 210 was too hot. My thought was thermostats are usually 180 or 195 so why would I be at 210. Since then i have met two other people with TJ's that also sit at 210.


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Old 08-24-2017, 10:26 AM   #11
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My '09 seems to run between 205 - 215, at which time the fans is triggered and it runs until the temp drops to 204. On a long uphill pull with ambients in the 80+ range it will reach 224. The trans temp runs between 150 - 200, depending upon conditions. Averages in the 170 range in summer. I added a Mopar Performance auxiiiary trans cooler. FWIW, the FSM suggests 180 degrees as the trans' operating temp.
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Old 08-24-2017, 02:28 PM   #12
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That's funny because when I got my Jeep I felt like 210 was too hot. My thought was thermostats are usually 180 or 195 so why would I be at 210. Since then i have met two other people with TJ's that also sit at 210.


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180 or 195 would be the temperature the thermostat opens at. Once open its the radiator and fans job to keep the temperature in the safe range. In other words once the thermostat is open the temperature can go higher, in some cases much higher. 210 is fine for the high temperature.
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Old 08-24-2017, 02:36 PM   #13
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Originally Posted by 0REDSOX7 View Post
We need to know what the actual temps are when the OP is not reporting his temps in while in "P"
Cruising the temps should be lower, there's a lot of air flowing through the radiator. More often than not overheating will occur in traffic, or idling, unless a hose bursts, thermostat fails, or the radiator fails, then it can happen at any time.

Today I took an hour drive with my 16 Rubicon. 80F was the ambient temp. On the parkway I was at 197F+/-, light traffic I hit 204F. Backing into my garage I hit 220F, idling in park when I turned it off it was 222F. The fan kicks on at 226F. All of those temperatures are normal, but 222F is too high for my liking.

My 08 Liberty under similar conditions will cruise on the highway at 199F+/-, backing up the driveway and idling in park it will hit 204. I'm much more comfortable with those temps. But I'm old school.
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Old 08-24-2017, 02:55 PM   #14
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Take a look at the spindles or whatever you call them on a 4WD front end. My axle seal leaked on one of them and apparently some got on the brakes. It smelled a bit like clutch burning.
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Old 08-24-2017, 03:19 PM   #15
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180 or 195 would be the temperature the thermostat opens at. Once open its the radiator and fans job to keep the temperature in the safe range. In other words once the thermostat is open the temperature can go higher, in some cases much higher. 210 is fine for the high temperature.


Thanks. Oddly enough, in addition to calling it a high temp, I would call it an operating temp. Doesn't seem to matter if I am driving on a cold day or on a 90 degree day with the AC on. 210 is where it stays. Works for me.


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Old 08-24-2017, 03:28 PM   #16
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Thanks. Oddly enough, in addition to calling it a high temp, I would call it an operating temp. Doesn't seem to matter if I am driving on a cold day or on a 90 degree day with the AC on. 210 is where it stays. Works for me.


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I just realized you're a fellow LI'er! 210 as the high 'operating temp' would make me a very happy camper.
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Old 08-24-2017, 03:35 PM   #17
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Originally Posted by 0REDSOX7 View Post
Point to note - your auto trans temp will actually show the engine coolant temp when switched in to PARK - so, check that with the transmission in a gear other than "P" because an auto-trans fluid temp at 226 would be a warning something is wrong.

With that said - are you lifted? Any mods?

I run between 195 and 205 regularly - but when out on the beaches this past weekend, I went as high as 225 (slow moving and was close to 95 out).

Also - how's your coolant level? Check it when hot. Perhaps maybe a bad thermostat?

If all that checks out - first thing I would do is get a pressure washer and hose off the AC condenser / radiator from the FRONT of the Jeep. You'd be amazing how much of a difference a clean radiator can have on cooling performance.
This.

I'm sure someone will remember my thread about my transmission almost catching fire last year. If you are in P it will read coolant temps. Trust me, the Jeep will go CRAZY when it gets too hot. It will scream "HOT OIL!!!" at you and start to run like crap..

To put this in perspective, my first transmission got up to like 250 when it screamed at me. Granted, I'm on my 3rd transmission on a 2015 (so far so good), but this new one never goes above 180 ish.

Coolant at 225 is totally fine and within the norm. Fan should kick on about then.
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Old 08-24-2017, 04:29 PM   #18
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a few weeks ago a buddy and I were pulling our small tent trailers thru Utah at 80mph in about 100* temps with a head wind. When we were pulling the big hills both our coolant temps would get up as high as 245* and our tranny temps never got above 172*. We monitored the temps for over 100 miles talking on the CB. the only thing that was concerning to me was how fast the distance to empty was changing. Both 2016 rubicons with 4.10's. his has 35 km2 mine 285/75-17 coopers. Oh I forgot as soon as you would crest the climbs temps would immediately drop down to 208-219 range.
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Old 08-24-2017, 06:04 PM   #19
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I have a '14 jku and see temps range from 204*-230*. I brought it in to the dealer and was told 226*-228* is not uncommon here on Long Island. Was told to look at the water temp gauge and if it ever goes above the halfway mark then be concerned. It has not gone above that point for me even when at 230*. These can and will run on the hot side.
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Old 08-24-2017, 07:45 PM   #20
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Been reading this thread a few times, and have a question, and NO, I'm not new to the JK's, had two. My 2016 Willys has the EVIC which shows oil pressure PSI, transmission temp(auto trans) and the coolant temp. Exactly what my manual shows it should be showing when scrolling through the buttons. I've only looked at this a few times, but when sitting in the driveway, that's what I see. What are you guys saying about "park" and "Drive" It's three things that I'm looking at? Nothing showing engine temp. that I knew about. What have I been missing, I just got my manual out again and checked. It's showing just what I'm seeing on my EVIC.
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Old 08-24-2017, 08:09 PM   #21
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Been reading this thread a few times, and have a question, and NO, I'm not new to the JK's, had two. My 2016 Willys has the EVIC which shows oil pressure PSI, transmission temp(auto trans) and the coolant temp. Exactly what my manual shows it should be showing when scrolling through the buttons. I've only looked at this a few times, but when sitting in the driveway, that's what I see. What are you guys saying about "park" and "Drive" It's three things that I'm looking at? Nothing showing engine temp. that I knew about. What have I been missing, I just got my manual out again and checked. It's showing just what I'm seeing on my EVIC.
engine temps is mostly likely being stated for coolant temps is my guess. when your vehicle is in park the transmission temp is actually showing what the coolant temp actually is. If you put it in drive the transmission temp will change to show what the transmission temp actually is.
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Old 08-24-2017, 11:31 PM   #22
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How are you guys getting specific temp readings? OBD2 device with Bluetooth/wifi, installed a digital gauge, other?


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Old 08-25-2017, 08:45 AM   #23
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30 miles, on the highway on the way to work this morning. Cruising at 75 with the A/C on coolant temp was 203* and transmission temp was 167*.
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Old 08-25-2017, 08:46 AM   #24
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How are you guys getting specific temp readings? OBD2 device with Bluetooth/wifi, installed a digital gauge, other?


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DIC on the instrument cluster, scroll through the menu's with the steering wheel buttons.
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Old 08-25-2017, 08:46 AM   #25
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How are you guys getting specific temp readings? OBD2 device with Bluetooth/wifi, installed a digital gauge, other?

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If you have the EVIC display - you can get these readings directly through that for Coolant Temp, Transmission Fluid Temp (auto only), Oil PSI reading and Oil Life Remaining.
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Old 08-25-2017, 09:25 AM   #26
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Thanks Rhino and RedSox! The Jeep is new to me and I didn't realize I could get that on the display. Off to read the owner's manual...


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Old 08-25-2017, 07:42 PM   #27
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I'm agreeing with OREDSOX. I get the same basic thing as the Manual says, 3 readings on the EVIC, Oil pressure in PSI, Coolant temp., and Trans. temp. Don't matter if in Park or in a Gear, nothing shows specific "engine temperature" that I've ever seen. Jad, what are you saying please?? Really, the three readings are all basic, they should not change in the EVIC display switching between gears. Three specific readings on the EVIC..... Check the manual and when driving, I did today and see the same as always, Park and Drive.
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Old 08-25-2017, 08:13 PM   #28
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coolant temp is what people are referring to engine temp as. If you are displaying transmission temp on your evic and you put your vehicle in park the transmission temp will actually display what the coolant temp is. I really don't know how to explain it any better. If you put it in drive the evic will go back to displaying what the transmission temp is until you toggle thru to see other readings. Ie you will never get an accurate tranny temp if your vehicle is in park as it will only display coolant temp while in park. Vehicles older than 2014 do not have the tranny temp displayed on the EVIC so maybe that is where the confusion lies.

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