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External trans cooler questions and people who bypassed the radiator get in here!

Old 01-04-2010, 05:07 PM
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Yeah I guess about the same as what you posted earlier in the winter, hotter in the summer though. Yes, in sender cooler line.
Yup, winter. thanks Mt. Goat for the comparison.

A few points i wanted to share...

the hardest part for me was removing the old and installing new rubber lines to the hard lines.. I was
They are in a "tight" space.

2 types of 3/8" hoses helped me:
one from autozone(slightly bigger inside d) & the other from a mom & pop.
i used the az hose for the hard line connection & the m&p hose for the cooler connection.
See my second pic and compare the return line hoses.

pls wear a mask to avoid atf fumes. dont ask me why

and use plumber's tape for all fittings (if any)

Last edited by logsurfer; 01-04-2010 at 05:14 PM.
Old 06-04-2010, 06:17 PM
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bump for yet another great tranny cooler thread-we're planning a 3rd gen maintenance day for Sunday June 27 in Denver area. My 01 Limited friend is simply going to replace the 9 year old radiator to minimize chance of the milkshake occurrence.

Very slick install logsurfer and thanks for sharing the photos
Old 02-14-2011, 06:17 PM
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Thanks Again

Thanks for the tips. I installed mine today.

















Old 02-15-2011, 02:26 PM
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Originally Posted by diesel power
Thanks for the tips. I installed mine today.
One more tip, others have had better luck mounting closer to the condenser:

Originally Posted by logsurfer

noticed a big improvement on my temps when I moved the tranny cooler closer to the condenser.
Originally Posted by J2F42C

IMHO, probably the most important step to take in order to keep the transmission running smoothly when mounting an external tranny cooler!
Old 02-15-2011, 04:08 PM
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Originally Posted by diesel power
Thanks for the tips. I installed mine today.
110% GUARANTEED to see higher temps in the trans than before you installed the cooler. This is a textbook example of how NOT to mount the cooler. Remove it ASAP.
Old 02-16-2011, 08:23 AM
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not to confuse you, the op.

you'll see cooler temps if you relocate your cooler closer to the condenser.
Old 02-18-2011, 05:59 PM
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Thanks for the tips. today i moved the cooler right up to the condenser. its about 1/4" away from it now.
Old 02-19-2011, 10:38 AM
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Originally Posted by diesel power
Thanks for the tips. today i moved the cooler right up to the condenser. its about 1/4" away from it now.

Pics or it didn't happen.

well done!
Old 02-27-2011, 03:17 PM
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yah yah yah i know how that goes

here's my proof.. its about 1/4"-3/8" from the condenser now:







Originally Posted by logsurfer
Pics or it didn't happen.

well done!

Last edited by diesel power; 02-27-2011 at 03:18 PM.
Old 02-27-2011, 03:27 PM
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10x better.

Your ATF and tranny will appreciate the relocation during the warm months for sure....
Old 02-27-2011, 03:37 PM
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i have noticed big swings in TFT depending on what i'm doing.. freeway when it was cold out last night (well 38*), flat ground, 75mph it was about 123*. going slower through mountains i've seen 180*.

i did plumb it in per tru cool's directions regarding the bypass. 180* doesn't bother me, but 120 seems a little on the cool side.. i'm not too worried as it isn't cold much here in sacramento. summer will really tell the tale..
Old 02-27-2011, 03:42 PM
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isnt the "milkshake" caused by coolant getting into the trans fluid?

if so, why am i reading in some of these posts that guys are NOT bypassing the cooler in the rad.?

isnt NOT using the rad. and possible coolant leaks into trans. fluid the whole point?

or am i just reading this wrong
Old 02-27-2011, 04:12 PM
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Diesel,

Those low ATF readings are fine. No need to worry.
Old 02-27-2011, 04:40 PM
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Originally Posted by wifes4now
isnt the "milkshake" caused by coolant getting into the trans fluid?

if so, why am i reading in some of these posts that guys are NOT bypassing the cooler in the rad.?

isnt NOT using the rad. and possible coolant leaks into trans. fluid the whole point?

or am i just reading this wrong
Yes, you are correct on the cause. It seems that some have bought a new radiator and also an external cooler and decided to use both.

Others, have plumbed in the external cooler in series with the old built-in radiator cooler. They are still tempting fate!
Old 02-27-2011, 06:17 PM
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Originally Posted by rworegon
Yes, you are correct on the cause. It seems that some have bought a new radiator and also an external cooler and decided to use both.

Others, have plumbed in the external cooler in series with the old built-in radiator cooler. They are still tempting fate!
O.K.
Just making sure i wasnt missing somthing here
Old 02-28-2011, 10:44 AM
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thanks

Originally Posted by J2F42C
Diesel,

Those low ATF readings are fine. No need to worry.
Old 09-18-2011, 11:42 PM
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regarding the idiot light - does that circuit affect anything else in the ECU? IE - I wonder if I can modify the circuit to make the light come on at 200 or 250... It would be nice to know at that temp rather than 300
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