Hot oil light... - JeepForum.com
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post #1 of 31 Old 07-31-2010, 06:38 PM Thread Starter
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Hot oil light...

I was wheeling in the Nevada high desert the other day (107 deg) and while climbing a moderate grade with a lot of twisting sharp soft dirt turns the hot oil light came on with loud chiming too.

I turned the Jeep around as soon as I could and went down a short distance looking for a place in the pines to turn it off and rest. It was off for only maybe 5 minutes when I started it to see if the light went off. It did but we stayed there for 15 more minutes to let it cool more.

I read somewhere on here where somebody said the Jeep would go into limp mode when the light comes on. Mine didnít. Has anyone else had that experience and if so did yours go into limp mode?

Yes I know I need an oil cooler and itís just because Iím in the lazy mode that thereís not one on now. Hopefully that will change very soon.




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post #2 of 31 Old 07-31-2010, 09:01 PM
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Limp mode..

srs... did you get the recall fixed?

I realize you said you were in the desert and it was hot as fuk...

maybe it was false?..............

or was that recall only for the 10's... i already forget lol
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post #3 of 31 Old 07-31-2010, 09:13 PM
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I don't think shutting it off is the correct response... 'cuz you stop the circulation.

For some reason I am thinking you are supposed to idle and maybe turn on the AC.

Were you in 4-lo?

Anyone know what temp triggers the warning?


OP: now go get that dang cooler!!
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post #4 of 31 Old 07-31-2010, 09:16 PM Thread Starter
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Yup, limp mode.

Did the recall re-flash thatís why it came on. I doubt it was false.

I donít think the recall pertains to the 2010ís.


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post #5 of 31 Old 07-31-2010, 09:35 PM
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Limp mode... i know... it's just funny to me...

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post #6 of 31 Old 07-31-2010, 10:17 PM
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Quote:
Originally Posted by 1222 View Post
I was wheeling in the Nevada high desert the other day (107 deg) and while climbing a moderate grade with a lot of twisting sharp soft dirt turns the hot oil light came on with loud chiming too....
Were you in 4 Low or 4 High? Also did you have O/D turned off?

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post #7 of 31 Old 08-01-2010, 02:11 AM Thread Starter
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I was in 4 high but wasnít going very fast. It was shifting a lot and I did think of putting it in 4 low but I never had a problem before so I thought I could get away with it. Dumb, I know.


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post #8 of 31 Old 08-01-2010, 03:03 AM
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Tranny coolers are almost required for around here. Something that will help it cool would be to turn on the heater, it will act like a 2nd radiator. Helps a lot for towing as well. If your just driving in dirt then use 2wd, it puts much less stress on the engine and will have much more hp at the wheels. I do desert driving quite a bit, lots of fixed up prerunners dont even have 4wd and desert is pretty much all they do. A tranny cooler would prolong the life of your transmission and I highly recommend getting one if your doing this type of offroading. Im sure 4low would help but obviously wouldnt be practical if you want to go fast and really isnt good on the TC if its not needed.

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post #9 of 31 Old 08-01-2010, 03:27 AM Thread Starter
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I know I need a tranny cooler and have mentioned it before. The problem is I always seem to put things off until something happens and then I have to do whatever.
Will be putting one on soon. Iíve been wheeling in the desert for almost 24 years now and never needed one. All of my previous Jeeps have been manuals. This is my first auto and Iím learning as I go.


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post #10 of 31 Old 08-01-2010, 04:06 AM
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oh my bad, I thought you mentioned oil cooler. Those are 2 different things. I dont think the jeep has a oil temp sensor on it, I believe a dummy light will turn on if the pressure gets too low though. Maybe thats what will put the jeep into limp mode like your talking about.

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post #11 of 31 Old 08-01-2010, 04:14 AM Thread Starter
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Iím not sure if itís supposed to go into limp mode with hot tranny oil or not. Itís just that somewhere a while back somebody mentioned it. I would guess it wonít since mine didnít. Oh well, just curious.


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post #12 of 31 Old 08-01-2010, 06:43 AM
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Manufacturer Procedure for Hot Oil:
If this HOTOIL message turns on, stop the vehicle and run engine at idle or faster with transmission in neutral until message turns off.

It'll basically occur when heavy towing or sever off-road conditions. But you definitely want keep the engine running to circulate the oil through the factory oil cooler.
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post #13 of 31 Old 08-01-2010, 07:25 AM
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You have a JK AUTO

You need an aux cooler

If you have A/C with tranny cooler, turn on A/C, engine fan comes on automatic and will help cool tranny fluid

Never climb off-road hills in 4hi, always use 4lo--it takes load off torque converter and tranny bands, the tranny will operate up to 45 į cooler in 4lo

Did I say install aux cooler ??

Here's the aux cooler in front of the A/C condenser, which also has a "minute"
Tranny cooler init



When you install an aux cooler there and turn on thr A/C, the engine fan will pull air thru--to cool--it works great

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post #14 of 31 Old 08-01-2010, 08:07 AM
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Had exactly the same issue wheeling in the desert. Fitted a tranny cooler after that. I wheeled in the desert for 3 years before they did the recall without a problem. Guess I was cooking the tranny then.

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post #15 of 31 Old 08-01-2010, 08:08 AM
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Quote:
Originally Posted by JIMBOX View Post

....When you install an aux cooler there and turn on thr A/C, the engine fan will pull air thru--to cool--it works great

JIMBO
Are you saying that the engine fan isn't already running? He said he was in the desert at 107 deg... I would think that his radiator fan would already be running. If so... seems to me that turning the AC on would introduce additional heat thru the radiator and into the factory transmission cooler.
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