Auxiliary Transmission Coolers

[mrblaine]

You mean cooler?

I use a Flexalite 4116TJ in front of the radiator. It is a popular choice.

Jerry Bransford likes his Derale 20561 with fan mounted underneath his rig. Chris, our Administrator, just purchased one.

There is a B&M cooler favored by some TJ owners.

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Edit: I see that you edited your post to read "radiator" rather than "auto".

The answer to that question is OEM Mopar. With the possible exception of adding an auxiliary transmission cooler, keep your cooling system stock.

I've only found one cooler that works as well as my somewhat picky needs dictate. 99.9% of Jeep owners won't run it because it costs almost 400 dollars for a passive cooler. It is the most cooler you can mount in the grill area easily but even then, you will have to pull the V bar to make it a clean installation. It's in a build thread with the Orange TJ Unlimited. I have not found a fan driven under the tub that is worth the money yet.

 

[Hayduke]

You mean cooler?

I use a Flexalite 4116TJ in front of the radiator. It is a popular choice.

Jerry Bransford likes his Derale 20561 with fan mounted underneath his rig. Chris, our Administrator, just purchased one.

There is a B&M cooler favored by some TJ owners.

___________

Edit: I see that you edited your post to read "radiator" rather than "auto".

The answer to that question is OEM Mopar. With the possible exception of adding an auxiliary transmission cooler, keep your cooling system stock.

I had the mixing of the fluids problem with my "91" XJ and I guess I don't know if Jeep ever fixed that or not. I just know that if at all possible, I would rather not experience that with my TJ.

 

[mrblaine]

I would rather not experience that with my TJ.

No one ever has that I have ever heard of.

 

[KCsTJ]

Great discussion, I installed this cooler a couple months ago.
I use my TJ as a DD and wanted to give the tranny some longevity in the Tx heat.
I chose a basic Flexalite, with AN6 fittings

and plumbed it in AFTER the oe radiator, just seemed to make the.most sense to me.
No problems post install after a couple thousand miles

 

[mrblaine]

Great discussion, I installed this cooler a couple months ago.
I use my TJ as a DD and wanted to give the tranny some longevity in the Tx heat.
I chose a basic Flexalite, with AN6 fittings View attachment 39856 and plumbed it in AFTER the oe radiator, just seemed to make the.most sense to me.
No problems post install after a couple thousand miles

What temps do you see on the gauge?

 

[KCsTJ]

What temps do you see on the gauge?

I have not installed a temp gauge on the transmission yet, but watching the radiator temp, it has always been normal.
And during my 1st wheelin at Wolf Caves last month, cooling temp gauge always remained normal.

 

[mrblaine]

I have not installed a temp gauge on the transmission yet, but watching the radiator temp, it has always been normal.
And during my 1st wheelin at Wolf Caves last month, cooling temp gauge always remained normal.

That's like putting air in the tire on the tailgate when you get a flat. The only way to know what the trans is doing is to put a gauge on it.

 

[KCsTJ]

That's like putting air in the tire on the tailgate when you get a flat. The only way to know what the trans is doing is to put a gauge on it.

Yes, I intend to. Do you have a recommendation for a tranny temp gauge or should any good B&M gauge be ok?

 

[Serbonze]

I called the guy that rebuilt my transmission and added the cooler and he offered to re-plumb it Transmission > OE Cooler > Auxiliary Cooler > Transmission for free.

That was easier than I thought.

 

[mrblaine]

Yes, I intend to. Do you have a recommendation for a tranny temp gauge or should any good B&M gauge be ok?

Personal preference is the Jeep gauge from Autometer.

 

[Jerry Bransford]

Personal preference is the Jeep gauge from Autometer.

Which one is that Blaine, is that a 90 or 270 degree sweep?

 

[89sandman]

Another thing you can do to help lower your trans temps is adjust your detent cable so that your not lugging around town in drive at 30 mph.

 

[Jerry Bransford]

Another thing you can do to help lower your trans temps is adjust your detent cable so that your not lugging around town in drive at 30 mph.

Huh? Detent cable??? Are you referring to the TV cable used by the 32RH @89sandman ?

 

[89sandman]

Detent, kick down, tv. Yes, a rose by any other name smells just as sweet Is the correct terminology for the Jeep a tv cable?

 

[Mr. Bills]

To Mr. Blaine:

This trans temp gauge?

https://www.autometer.com/2-1-16-transmission-temperature-like-2552.html

 

[Jerry Bransford]

Detent, kick down, tv. Yes, a rose by any other name smells just as sweet Is the correct terminology for the Jeep a tv cable?

Never heard it called a detent cable, yes it's the TV or Throttle Valve cable aka kickdown cable.

It should not be adjusted to anything other than it's correct setting which is the point where its slack is removed and just taut without pulling when the throttle is at its resting position. Any other setting is incorrect and can cause shifting issues.

Here's a good thread on it which includes a section on adjusting it correctly... http://jeep*forum/forum/f9/throttle-valve-tv-cable-adjustment-1356382/ Remove that asterisk between Jeep and forum to get the correct link address.... I still don't agree with useful links like that being censored.

 

[mrblaine]

To Mr. Blaine:

This trans temp gauge?

https://www.autometer.com/2-1-16-transmission-temperature-like-2552.html

View attachment 39864

Yep, I've installed about 10 of them.

 

[mrblaine]

Never heard it called a detent cable, yes it's the TV or Throttle Valve cable aka kickdown cable.

It should not be adjusted to anything other than it's correct setting which is the point where its slack is removed and just taut without pulling when the throttle is at its resting position. Any other setting is incorrect and can cause shifting issues.

Here's a good thread on it which includes a section on adjusting it correctly... http://jeep*forum/forum/f9/throttle-valve-tv-cable-adjustment-1356382/ Remove that asterisk between Jeep and forum to get the correct link address.... I still don't agree with useful links like that being censored.

On the 32, Joe up at Westminster has us adjust them about 3 of the little notches tighter so that it will raise the governor pressure a bit and hold the gears a bit longer for larger tires.

 

[Jerry Bransford]

On the 32, Joe up at Westminster has us adjust them about 3 of the little notches tighter so that it will raise the governor pressure a bit and hold the gears a bit longer for larger tires.

There's no higher or better resource on transmissions than Joe, thanks for that.

 

[89sandman]

Cable can be adjusted to preference with in a certain range and cause no I'll affects to the transmission, in fact slightly increasing the shift point will allow the transmission to run cooler.