Anyone put a trans cooler on their jeep? - Jeep Wrangler Forum

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Old 10-07-2009, 07:50 PM   #1
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Anyone put a trans cooler on their jeep?

I am probly going to add that to the list of projects this winter. I was your thoughts on them and the different models?
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Old 10-07-2009, 07:56 PM   #2
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I added this passive tranny cooler from Currie Enterprises and mounted it between the radiator and front grill. I think it probably dropped my tranny's temp by 10-20 degrees according to my tranny temp gauge.



However, I think a flat radiator with an integrated thermostatically controlled fan might be a better way to keep the tranny ATF a little cooler. For that type of cooler, like B&M makes, most install them in the very rear of the Jeep, just above the rear end of the rear driveshaft.

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Old 10-07-2009, 08:12 PM   #3
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I had my local shop add while they were doing other work. Flat panel-type radiator but no fan/ thermostat. A worthwhile investment, I would say (for the autos).

Jerrry, any ideas/write-ups on how to add a temp gauge for the tranny???
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Old 10-07-2009, 08:18 PM   #4
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I was thinking of this one because it comes with everything= no trying to piece together the whole deal.

Pacer Performance Products 20561 - Derale Direct Fit Transmission Cooler for 87-06 Jeep® Wrangler YJ, TJ & Unlimited with Automatic Transmission - Quadratec
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Old 10-07-2009, 09:20 PM   #5
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I run this one, 26k GVWR and I bypassed the radiator.

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Old 10-07-2009, 10:53 PM   #6
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^ Just like mine. Though mine is also still routed through the stock radiator cooler too.
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Old 10-07-2009, 10:54 PM   #7
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Quote:
Originally Posted by motokeen View Post
I was thinking of this one because it comes with everything= no trying to piece together the whole deal.

Pacer Performance Products 20561 - Derale Direct Fit Transmission Cooler for 87-06 Jeep® Wrangler YJ, TJ & Unlimited with Automatic Transmission - Quadratec
Yes, but....

Mine was installed, complete, for only 160.00 (the fan would be nice though).
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Old 10-08-2009, 12:53 AM   #8
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when you install a cooler to your trans you still need to run it through your stock cooler in the radiator.

the proper way to route a cooler is through the aftermarket cooler first, then through your stock cooler so it will keep it as close to a constant temperature as possible.

if you go through your stock then your aftermarket then it will be too cool to let the moisture evaporate off of the trans fluid and it will begin to sludge up and ruin the trans, but the other way it will cool it off, then warn it back to operating temps before it renters the trans.
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Old 11-20-2009, 02:22 PM   #9
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want to add tranny cooler

I just bought a new 09 sahara auto and thought that I would put a tranny cooler on it to help extend the life of the transmission. Called the dealer since it is brand new, plus I thought it might have a tranny cooler because it has the tow package. Found out that it does not have a tranny cooler and the dealer told me that one cannot be put on there, and that if I had someone else do it, that it would void the warranty. I called Chrysler corporate and it told me that the use of an aftermarket cooler would not, in and of itself, void the warranty, but that if there were any tranny problems that were caused by the cooler, they would not be covered. I'm sure that my dealer would interpret that as "any and all tranny problems were caused by the installation of the cooler" regardless of what the actual problem was. So I guess I won't be installing a tranny cooler which seems pretty dumb to me.

Has anybody else had a similar issue with tranny coolers and warranties?

Thanks in advance,

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Old 11-20-2009, 02:28 PM   #10
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Your '09 does indeed have a tranny cooler. Look at the very bottom of your radiator on the engine side of it and you'll see two lines connected to it that lead back to the transmission. The transmission cooler is part of the OE radiator. I installed an auxilliary cooler onto mine that follows the factory cooler but that is only because I tow a pop-up tent trailer.
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Old 11-23-2009, 11:26 AM   #11
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Thanks for the info!
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Old 02-23-2010, 10:38 PM   #12
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So which transmission fitting on the radiator is the in and which is the out? I want to make sure the tranny fluid runs into my aftermarket radiator before it runs into the stock radiator.

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