DIY trans super cooler.

[Charlie Baird]

Quick little write up on something I did for towing my car trailer. I noticed my trans temps would get above 200 pretty frequently and I didn’t really like that so I went to advance auto and looked around for a few things. I have the part numbers in pictures below and Also how I routed the hoses.
1) you’ll see where I cut the original trans cooler hard line, it’s thin and easy with a small die grinder.
2) a hose from there to the inlet of the auxiliary trans cooler. Run the outlet of the aux cooler the the other side of the cut line on the factory cooler. I ran it through the cross support to make sure it doesn’t flop around and chaff on anything. Also double clamped everything for extra measure.

3) now for the fan, I used heavy zip ties and the standard mounting push pins to hold it all in place. 500 mile and hasn’t moved at all.

6) I checked the load with my volt meter and the stock wiring for the Ac condenser motor can handle the fan I have pictured. The wires never get hot and the load never shoots up higher than I’d like. I tapped into those wires so I can turn the fan on and off with the Ac if needed and if I’m running the Ac and it’s hot out it cools my Ac off way cooler as well especially at stop lights. Win win situation.
7) now check your fluid level to see if you need to add some if you lost any. I lost a tiny amount and didn’t have to add any but yours may be different.


After doing this, my trans temps have not gone over 150 even towing. (I have a gauge pod on my a pillar with trans temp). Not once. Great mod for towing in my opinion and helps the Ac out providing extra cooling for the trans without hurting radiator air flow. I love it and it cost less than $90 at my local advance auto. I accept no responsibility for any damage caused by attempting this mod!! Have fun and enjoy

 

[Charlie Baird]

Another note, touching the trans lines even after driving, the trans line going back to the trans (after both the aux cooler and factory cooler) is very cool to the touch. Not just warm, but cool. And yes the fluid is flowing I checked s few times thinking maybe it was so cool bc it wasn’t flowing. But it’s flowing just as good coming out as it is going in. I believe this shows how well the coolers work together with this set up also my gauge doesn’t lie either.

 

[SYKRAMMAN]

Another note, touching the trans lines even after driving, the trans line going back to the trans (after both the aux cooler and factory cooler) is very cool to the touch. Not just warm, but cool. And yes the fluid is flowing I checked s few times thinking maybe it was so cool bc it wasn’t flowing. But it’s flowing just as good coming out as it is going in. I believe this shows how well the coolers work together with this set up also my gauge doesn’t lie either.

That’s a great mod but you may have issues in cold weather due to the fact that the tran’s shift points are dictated by trans fluid temp. I may be wrong but I would look into it so you know if something doesn’t feel right.