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Old 03-05-2003, 06:29 AM   #1 (permalink)
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Auto Trans Cooler Question

I'm getting ready to put on an Aux Trans Cooler on my 91 Toy 4runner. My questions are:
1) Should I run dual line ones to the rad and ones to the new cooler?
2) If I run only to the new cooler what do I do with the line holes coming out of the rad?
3) Should I just replace the trans cooler that is there but is very small back by the Transfer case?
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Old 03-05-2003, 08:44 AM   #2 (permalink)
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Re: Auto Trans Cooler Question

Quote:
Originally posted by edwardsteiger
I'm getting ready to put on an Aux Trans Cooler on my 91 Toy 4runner. My questions are:
1) Should I run dual line ones to the rad and ones to the new cooler?
2) If I run only to the new cooler what do I do with the line holes coming out of the rad?
3) Should I just replace the trans cooler that is there but is very small back by the Transfer case?

You can keep the one in the rad if you want, it doesn't make that much difference.

Plug them.

Does the rear one have any airflow? If the new one has a fan, you could do that. Or just put the cooler in front of the rad.
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Old 03-05-2003, 04:08 PM   #3 (permalink)
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I used the cooler in the radiator, I cut into the line coming out of the radiator to the aux cooler infront of the radiator and back to the tranny. Make sure you run through the aux cooler after the radiator.
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Old 03-05-2003, 04:52 PM   #4 (permalink)
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Bypass the radiator all together. Run the largest cooler you can fit/afford.
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Old 03-05-2003, 09:12 PM   #5 (permalink)
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Quote:
Originally posted by The Rockslut
Bypass the radiator all together. Run the largest cooler you can fit/afford.
Thats what I did. I am using a cooler that is for a mobile home, keeps that thing plenty cool. It takes up half of my radiator. You can get them pretty cheap at autozone too.
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Old 03-05-2003, 09:13 PM   #6 (permalink)
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I run both the radiator cooler and aux cooler and it works well. Ive got a perma cool cooler, and I have to say it works really well!
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Old 03-06-2003, 12:00 AM   #7 (permalink)
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I by passed my stock cooler, and just ran an aftermarket one. Every hill it hit i was getting darn close to over heating my transmission, so i added a second cooler. Problem gone.
http://store.summitracing.com/partdetail.asp?part=12237
Without the gague i would never have known my tranny was overheating until it was too late... or i can just take the advise of my ex-tranny guy who told me dont put in a gague, because it is just one more thing to leak, and you will know if the trans is over heating if trans fluid comes out of the over flow.
Lets just say i grabbed my keys and havent been back since...

No wonder it took him 2 months, and numerous times to rebuild my tranny.. only to just put in a mopar rebuilt one. And i thought 35 years in the tranny businees ment something

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Old 03-06-2003, 04:50 AM   #8 (permalink)
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Quote:
Originally posted by Hick
Without the gague i would never have known my tranny was overheating until it was too late...
Where did you mount the guage? Did you just tap a mechanical guage in the pan, or did you put it in line somewhere?
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Old 03-06-2003, 04:55 AM   #9 (permalink)
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Thanks for the input. I think I'm going to run the in line to the rad and the output to the aux cooler put it in front of the rad and the run the output from the cooler to the trans. Hopefully this will keep it cool.
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Old 03-06-2003, 09:33 AM   #10 (permalink)
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Quote:
Originally posted by JimD
I used the cooler in the radiator, I cut into the line coming out of the radiator to the aux cooler infront of the radiator and back to the tranny. Make sure you run through the aux cooler after the radiator.
This is the way to do it, If you live in a Cold area, The Radiator cooler helps heat up the Tranny Fluid as well, To cold os Tranny fluid = crappy
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Old 03-18-2003, 10:19 PM   #11 (permalink)
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If you live in a cold climate you might want to keep the radiator cooler hooked up also, too cold a fluid is just as damaging to an auto trans.
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Old 03-19-2003, 12:05 PM   #12 (permalink)
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TCI recommends not to use the radiator cooler...I didn't read why but go to their site and read the FAQs www.tciauto.com
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