Franks93Cherokee

Ok so I started to put the cooler on and I have a factory one. So what next? My transmission is a 3 speed if that matters any. I guess I will replace the radiator and then try and cool things down some and go from there. I can drive this jeep for around 100 miles before this starts happening folks. And when it starts it does the full smoke show. But you can shut it down and let it cool for a half hour and you can't get it to do it again unless you jump on the interstate and top out at around 75 mph for a around 70 or 80 miles down the road then it starts. It's like heat related for sure the jeep runs around 210 on the interstate and sitting still can go above this to around 230 and goes down when you take off. Fan clutch feels tight no slack and electric fan is cutting on and off as it should.

ZINGGG

Are you lifted with bigger tires at all? If you're stock, you shouldn't have this problem really... A new rad might be the key here to get your tranny to stop overheating. An auxiliary tranny cooler is never a bad idea though and putting one in I bet will completely cure your issue.

Are your tranny lines in good shape? As in not dented/pinched/crimped/etc?

Ever done any maintenance to the cooling system? 210 is a good temperature though and you should not worry about it. Does it ever go above 230 at idle?

ZINGGG

Jasper? A warranty for what?

My logic is the more you're able to cool the transmission, the better. So I see it as having 2 coolers as opposed to only one. Search around. People have talked about the pros and cons of both ways over and over again.

LYKOS

Jasper Engines and Transmissions... quality stuff for what they are.

Franks93Cherokee

Well it has the factory wheels the tires I'm not sure about but if they are larger it wouldn't be by much it's a 2 wheel drive model. But they may be slightly taller.

One guy emailed me and said it was the seal for the over flow vent in the bell housing anyone ever heard of this? He said it heats up and starts leaking. And that was all it needed.

It's running me freaking nuts the Jeep runs and shifts out perfect the only flaw is this transmission fluid thing once it gets up to around 210 And what is funny is I can do the 210 thing for hours and when I get close to 100 miles it's like it's building pressure and out it comes. Let it cool down a half hour or so and we are back to no leak.

Franks93Cherokee

My tranny lines are in good shape. No lift kit and the tires are just normal street tires they might be a little larger in height than normal but not much if any. It has a factory auxiliary cooler in place.

Franks93Cherokee

It's never been above 230 at idle it runs around 210 unless I sit for a long time like in a drive threw then it can sneak up. But it never boils over or spills any antifreeze just transmission fluid.

ZINGGG

Well shoot if you have a warranty on the transmission, I'd take it to where you got it done and tell them your situation and what happens and see if they can do anything about it. I definitely wouldn't want to do anything to ruin a warranty on such components

ZINGGG

I would try disconnecting that aux cooler, putting a hose to it and flushing it out with some sort of cleaner. Then let it completely dry before hooking it back up. Cause who knows, it might be clogged to an extent inside, restricting flow somewhat and causing that. At least that would be my first step. Cause after 150,000 miles, i'm sure it isn't in the best of shape.

As for your overheating issue, have you done any maintenance to the cooling system? What color is the coolant? When's the last time the thermostat, water pump, radiator, hoses, and rad cap replaced? Also, the hand spin test of the fan clutch isn't the most accurate of tests

LYKOS

I'm with ya man. Its frustrating. It's killing me.

Franks93Cherokee

The fan clutch passed the hand spin test it works real good. The coolent is green. It just blows my mind at how it waits all day to it.

Franks93Cherokee

It has P235 tires on it if that matters any folks. I'm not sure what factory size specs are. Called my transmission shop again and explained this to him in detail. He said it sounded very strange to him now keep in mind this guy has been in business for over 30 years and 20 of those were with me as a customer. So he has been around for a while. He said he would have to research it and that it sounded a little like a lip seal but the doing it only around 80 to 100 miles towards the end of the day was strange. That a lip seal would do it once warm. So the plan is next week I'm putting a new radiator in it and see what happens if this don't stop it then he said bring it in to be figured out in his shop. I will keep you posted because there ars so many people with this problem and no real answers for it.

Radi

Probably 225, but lots of us run the 235's. The difference is size is minor.

LYKOS

Someone has to have had this issue and resolved it WITHOUT installing aftermarket parts.

I may have mis-titled the thread because I can't confirm it's coming out of the breather. But it IS transmission fluid and it is covering the entire back half of my engine. It's even getting on my driver side coil spring.

A seal that I blew when I overheated the engine maybe?


This morning with AC on and in 88 degree heat my engine did fine. But at 218 degrees when I backed off the fuel my Xj looked like Puff the Magic Dragon.

Shifts fine, fluid looks good...

Lots of people had this problem but can't find a good solution in anything I search and find.

Franks93Cherokee

Yea mine is doing the same thing. I have talked with transmission shops and it's got them confused. I'm going to spend the money and get a new radiator this week. I mean the Jeep should hold 210 firm or below it should not be going over that sitting still at a red light. And I feel like that once you hit this temp it just boils over and comes out the vent in the bell housing. If the radiator fails to keep it cool then I will replace all the other stuff. Putting the transmission in the shop is going to be last. I'm as confused as you are and have never seen any Jeep do this before. I had a 1993 two years back and I had problems with it sneaking up in temp at a red light. It had a new radiator and fan clutch and still did it so I just straight wire the electric fan and done away with the senor idea and made the fan run all the time and it never went past 190 after that. So if this radiator don't make it run cooler the fan is next. It cuts on when the ac compressor kicks on for a few seconds and then it kicks off I don't think it's staying on long enough myself.