aux transmission cooler

Moe Drama

Member
:
Mazda 5 GT 2009
I'm installing an aux transmission cooler on my 2009 5 gt, this weekend to allow for some light towing. anyone have any tips?
I'll take pics and post about how it goes...
 
it went well -pictures

Got it done today and Installed an additional low tone horn while the bumper was off. sounds good!
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I got rid of this plastic flange... please don't tell me it was important! lol
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Yeah, I'm showing my Hippie side, I used old bicycle tube as a protective cover for the hoses...
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here's the additional low horn just before I spliced the power wire
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it sounds nice and authoritative now!

topped it up with castrol import ATF once while still on the jack stands and then again after a drive around the block to get it up to temp.
Im leaving the under engine plastic plates off for a bit to allow easy checks this week but things look good.

I did the wiring myself with a mostly plug and play kit from CURT
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I was going to install the hitch myself but due to slow shipping I cancelled my order from e-trailer and booked it to be done by u-haul here in town. gotta have it ready for july!
 
Looks good - some questions if you don't mind:
1) what kit did you use? part number?
2) how did you attach the upper part of the cooler to the radiator?

thanks
 
(since you asked) That baffle you removed is meant to channel air through the radiator. The air enters through the grill, and the baffles on either side make sure that the air moves through the radiator core, and not around the side of it.

Removing it will result in less/less efficient cooling.

I would recommend replacing it, especially now that you've added another obstacle (trans cooler) in front of the radiator, and plan to use the vehicle for strenuous activities (towing).
 
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Ya I saw the other thread where the hoses were routed under the headlight after I finished the job. I should be able to put that baffle back but i might have to modify it to allow the hoses to fit or route the hoses a different way...
 
Here's a few more pics that show the top bracket and packaging of the kit

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I used the "minivan" one #14-0105-0

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the most I'm planning to haul will be about 1200lbs (a Boler camper a few times a year)
 
It's just a very weak tranny. If you do tow, make sure you flush it out with new synthetic fluid and a cooler is an absolute must. It's still going to get hot as hell and probably cook it.

The only complaint on this car, for me, is the tranny.
 
Hi Moe Drama. Any chance you can rehost the pics? I'd like to see how and where you routed the inlet/outlet hoses.

Here are a couple of pics when I installed mine last summer. I used an old u shaped section of radiator hose to route the cooler lines through under the d/s headlight. Worked perfectly and protects the hoses from chafing. I don't have any final install pics though.
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Have any of you guys with add on coolers been able to quantify your drop in trans fluid temps? Ive got a scangauge II and i show temps of 170-220 degrees in normal driving, never higher than 220, even in the depths of summer AC on....
 
I'll take some measurements soon. I installed it because I was going to be tracking the 5 and wanted every ounce of prevention possible. Original trans, I've owned it since 67k miles with an unknown service history. I've flushed it twice in the the last 20k miles. I think with the cooler the fluid will last longer.
 
I'll take some measurements soon. I installed it because I was going to be tracking the 5 and wanted every ounce of prevention possible. Original trans, I've owned it since 67k miles with an unknown service history. I've flushed it twice in the the last 20k miles. I think with the cooler the fluid will last longer.

The fluid should last longer, but the clutches will absolutely last longer. Fluid can take heat. The clutches can't. I posted a tranny temp curve on this forum years ago. Can't find it now.
 
Check out my recent post below on the trans cooler install I did on my 2012 Mazda5. It's got some pics.

http://www.mazdas247.com/forum/showthread.php?123847630-2012-Mazda5-Transmission-Cooler-Install
Thanks Mark. Saw your post but didn’t see pic of what I was looking for. Also did you add an inline filter?


Here are a couple of pics when I installed mine last summer. I used an old u shaped section of radiator hose to route the cooler lines through under the d/s headlight. Worked perfectly and protects the hoses from chafing. I don't have any final install pics though.
Thanks. Good idea on using an old hose as jacket/sleeve. That is where I'm planning to route the line as well. I want to minimize the length of the hose as much as possible. Guessing the return line also goes through the same opening? Is there a reason why you decide to mount it horizontal vs. vertical? I fab’d brackets (leftover aluminum from storm door floor seals) and mount it vertical to the bumper beam itself. My though was to create some separation between the aux cooler and the radiator to avoid blocking air flow to the radiator This also allowed me to put the cooler higher and behind the beam b/c the radiator indicates it gets banged up down low. I decided on vertical mount to let gravity help with flow (over thinking?). I am also adding a manafine inline filter. Did you add a filter?
 
I didn't add a filter but may in the future. I mounted it that way to get the most airflow over the cooler and vertical vs. horizontal doesn't matter as the system is under constant pressure with the engine running so gravity doesn't really have an effect, unless I'm missing something. Both hoses run through the radiator hose sleeve, only had one installed in the pic.
 
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