CVT Overheating - Jeep Patriot Forums
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post #1 of 23 (permalink) Old 04-25-2010, 09:51 AM Thread Starter
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CVT Overheating

Hello guys i'm new at the forum, i was lurking the forums as a guest for about 9 months, since every question i possibly had was already resolved...

but now i have a question about my pat 2wd 2007 50k miles on it.

i took the pat for a trip (a long one in highway) i usually in this kind of trips i use an old lincoln towncar (1995) but my tc is having tranny issues, so i took the pat instead, used to drive in highway at about 100mph the patriot seems quite boring.

yesterday was quite hot (about 40 c), and i was pushing the gas at about 85mph 3500 revs always watching over the temp gauges and instrument panel, and then the "transmission over temp" lights on, so i was like FFFFFFFFFFFFFFUUUUUUUUUUU and pulled over the road, engine runing, open hood, turn on the heating, and let it idle for a few minutes... light remain on (engine coolant fluid was warm, not cold but neither hot), i was thinking about call to get towed, but as a IT worker I said: how about shuting down and restarting? = light go off.

so, is this a normal thing?

TL;DR: driving in a hot day (40c) at 3500revs 85mph for about 1 hour resulted in transmission over temp light in the dashboard.

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post #2 of 23 (permalink) Old 04-25-2010, 10:45 AM
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Well, it could have been just a temporary thing, but with the lack of a transmission fluid dipstick, I would go to a dealer and have them check the fluid level. Generally a transmission overheat should only occur when towing or otherwise straining the trans, or if the fluid is low. Since it did overheat, you may want to change the fluid too.

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post #3 of 23 (permalink) Old 04-25-2010, 04:21 PM
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104* F, 85 MPH, that's pushin' it. Surprised it was the tranny overheating, not the Engine. If you meant 85 KPH, that's not so bad.

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post #4 of 23 (permalink) Old 04-29-2010, 07:08 PM
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Wow! 85MPH??? I am surprised that you could take any corner in the Jeep at that speed. That would be like going 140KPH here and I would not feel safe going that speed in this vehicle. My old 2003 Crown Vic perhaps but not the Jeep.
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post #5 of 23 (permalink) Old 04-30-2010, 04:51 AM
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You guys have a lot of corners in your highways over there?

140km/h can be a safe speed for a Patriot - on a wide open highway, traveling in a straight line, with plenty of visibility, little traffic and low to no winds. (Once the wind starts to blow, especially from the side, I would slow down quite a bit. I am assuming I don't even have to mention all the other factors that might affect the safe top speed...)

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post #6 of 23 (permalink) Old 04-30-2010, 07:22 AM
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85 MPH on a interstate highway is no problem, I've done it for an hour or so, with no problems.

I agree with Todde, have it checked out.


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post #7 of 23 (permalink) Old 04-30-2010, 09:54 AM
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I have done 85 also through alligator alley in FLA. Normally I just set the cruise control to 5 MPH over whatever the speed limit is so I don't get a ticket.
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post #8 of 23 (permalink) Old 05-21-2010, 04:55 PM Thread Starter
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o hai guise, i was out of town and w/o my pat, so usless to post

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Originally Posted by klingoff View Post
Wow! 85MPH??? I am surprised that you could take any corner in the Jeep at that speed. That would be like going 140KPH here and I would not feel safe going that speed in this vehicle. My old 2003 Crown Vic perhaps but not the Jeep.


yup, 85 mph/140kmph, used to speed at 100 with my old car, and actually you can take a not too sharp (60) corner at about 120km/h with out problem, and since the suspension is harder and my pat is not lifted i have good stability (once drove a ford bronco and the damn thing is "sofa king" unstable).

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Originally Posted by Dawson View Post
104* F, 85 MPH, that's pushin' it. Surprised it was the tranny overheating, not the Engine. If you meant 85 KPH, that's not so bad.
no, i mean 85mph/140kmh, and 40c outside temp, A/C on, and high humidity, crossing a highway in a former swamp zone, flat as hell.

update of the situation: CVT fluid changed, CVT status: dark almost black (i've heard is light green the cvt), used oil smell (not burnt).

anyone knows the amount of fluid that goes in the cvt?



picture of the road, late noon, problem was about 2 hours before, cool landscapes.
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post #9 of 23 (permalink) Old 07-01-2010, 03:18 PM
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My trans light went on and the trans started to slip so I pulled over and let it cool for a while. When it cooled down the light went off . About 100 miles more and it went on again.
I did the same as the first time and then when I took it to a dealer the next day they said the code showed as a bad Brake switch!!!. Well within 7 or 8 days it started again, this time about every 50 miles. When I got it to a different dealer, they said it was the actuator. They got me for the deductible both times and nothing about the trans at all.
I have 75,000 on it now.
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post #10 of 23 (permalink) Old 07-05-2010, 02:11 AM
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overheating!

I have a 2009 Patriot (jeep green) & it is a fleet vehicle for my job as an outside sales rep. It gets VERY hot where I work & I am in & out of the car all day. I can consistently hear my transmission struggling on a hill or the freeway and it has locked the car to 30-40 mph 3 times in a week. I pulled over and let it cool off foe a half hour each time so i could drive it. I had the same problem last summer & the dealer in palm desert, CA said they reset the indicator light so it wouldn't respond this way, it still does. Can this car not handle desert heat? It is at the dealer now & they are baffled....any help would be greatly appreciated.
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post #11 of 23 (permalink) Old 07-05-2010, 10:05 AM
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I haven't had any issues with mine Elleb15. It's not a fleet vehicle, but I drive it around in the city and onto construction sites all the time in this summer heat. I haven't ever heard a whimper of complaint from the tranny.

Now technically my CVT2L is different than the CVT2, but I wouldn't think their cooling systems or capability were any different.


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post #12 of 23 (permalink) Old 07-05-2010, 09:50 PM
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I find it to risky in pushing it that far... that would be the consequences you did.
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post #13 of 23 (permalink) Old 07-08-2010, 07:24 AM
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No answer on my trans from the dealer, I've talked to the factory people and no help.
It does not feel the same when I drive it. Shifts different now (higher RPM's) but the dealers say the computer shows nothing.Not Happy. Just have to wait for it to blow up!
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post #14 of 23 (permalink) Old 07-08-2010, 08:48 AM
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I wonder if the problem is a stuck closed secondary thermostat? The Patriot has two, a 180 deg. F Primary, and a 203 deg. Secondary that is supposed to increase water circulation and cooling. This may explain why some folks are seeing a CVT heat problem while the majority are not. I would also think there should be a way to put on an auxiliary trans cooler to help lower trans fluid temp.

We're seeing a 100 deg. F heat wave here in the Philly area, and I'm not having any trans temp issues myself, even running the AC on full blast!

-Todd
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post #15 of 23 (permalink) Old 07-08-2010, 01:10 PM
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Finally found the problem, there is a problem with pin connector at the TCM.
After driving my jeep for about 40 miles today the light went on again. This time I was close to the dealer that fixed it the last time ( or they said they did) and I drove it there with the light on and the trans slipping for about 5 miles. Drove right into the write up area and showed the write up guy the problm without shutting off the jeep.
He then had the shop foreman look at it and take it for a short drive. The light went off while the trans was in park for 10 minutes. He was able to use his monitor and it showed a P0218 code. High Temperature Operation Activated. P0713 Trans Temp Sensor Voltage Too High.
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