Auto Trans Cooler Question - Pirate4x4.Com : 4x4 and Off-Road Forum

edwardsteiger · 03-05-2003, 06:29 AM

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?

ttabbal · 03-05-2003, 08:44 AM

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.

JimD · 03-05-2003, 04:08 PM

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.

The Rockslut · 03-05-2003, 04:52 PM

Bypass the radiator all together. Run the largest cooler you can fit/afford.

pavelow · 03-05-2003, 09:12 PM

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.

Po' riggity · 03-05-2003, 09:13 PM

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!
Scott

GRMhick · 03-06-2003, 12:00 AM

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

Garrett

TexasBlake · 03-06-2003, 04:50 AM

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?

edwardsteiger · 03-06-2003, 04:55 AM

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.

welndmn · 03-06-2003, 09:33 AM

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

Oatmeal · 03-18-2003, 10:19 PM

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.

Supergper · 03-19-2003, 12:05 PM

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

03-05-2003, 06:29 AM	#1 (permalink)
edwardsteiger Registered User Join Date: Dec 2001 Member # 8766 Location: San Antonio TX Posts: 156	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? __________________ Why work go wheel'n

03-05-2003, 04:52 PM	#4 (permalink)
The Rockslut Registered User Join Date: Jun 2001 Member # 5021 Location: Lincoln, CA Posts: 5,967	Bypass the radiator all together. Run the largest cooler you can fit/afford. __________________ Don't be "THAT GUY" on the trail. www.voodoowax.com

03-06-2003, 04:55 AM	#9 (permalink)
edwardsteiger Registered User Join Date: Dec 2001 Member # 8766 Location: San Antonio TX Posts: 156	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. __________________ Why work go wheel'n

03-19-2003, 12:05 PM	#12 (permalink)
Supergper Registered User Join Date: Nov 2000 Member # 2159 Location: SLC, Utah Posts: 2,898	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 __________________ -Caleb Call

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03-05-2003, 04:08 PM	#3 (permalink)
JimD Newbie Join Date: May 2001 Member # 4923 Location: Reno NV Posts: 60	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.

03-06-2003, 12:00 AM	#7 (permalink)
GRMhick Pirate4x4 Addict! Join Date: Feb 2000 Member # 87 Location: I live in hotels tear out the walls I have accountants pay for it all Posts: 7,203	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 Garrett

03-18-2003, 10:19 PM	#11 (permalink)
Oatmeal Registered User Join Date: Oct 2002 Member # 14600 Location: Covina,Ca. Posts: 1,010	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.