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What runs through tranny coolent lines?

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Steve

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Dec 28, 1999, 3:00:00 AM12/28/99
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In the cooling lines that run from the tranny to the radiator.
Does tranny fluid or radiator fluid run through these lines?
These lines are rusted out in my 87 Toyota pickup.
Some here at work insist its radiator antifreeze running in a loop through
the tranny.
Others say its tranny fluid running through the Radiator.

When I cut these lines to remove them what will come out ? Antifreeze or
transmission fluid?

(already leaking and looks like tranny fluid to me!)

Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.

With these lines cut, can I run truck long enough to drive it onto ramps so
I can work under it?


Thanks Steve

John Schmidt

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Dec 28, 1999, 3:00:00 AM12/28/99
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In article <84avth$qml$1...@bob.news.rcn.net>,
Transmission fluid runs through those lines.


Sent via Deja.com http://www.deja.com/
Before you buy.

John Schmidt

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Dec 28, 1999, 3:00:00 AM12/28/99
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In article <84avth$qml$1...@bob.news.rcn.net>,
"Steve" <ste...@NOSPAMultranet.com> wrote:
> In the cooling lines that run from the tranny to the radiator.
> Does tranny fluid or radiator fluid run through these lines?
> These lines are rusted out in my 87 Toyota pickup.
> Some here at work insist its radiator antifreeze running in a loop
through
> the tranny.
> Others say its tranny fluid running through the Radiator.
>
> When I cut these lines to remove them what will come out ? Antifreeze
or
> transmission fluid?
>
> (already leaking and looks like tranny fluid to me!)
>
> Is tranny fluid flammable? I'd like to use my dremil tool to cut the
lines.
>
> With these lines cut, can I run truck long enough to drive it onto
ramps so
> I can work under it?
>
> Thanks Steve
>
>
What is preventing you driving the vehicle onto the ramps, then
cutting the lines? If you cut and then drive, you'll have transmission
fluid everywhere. You should be able to drive onto the ramps after you
cut the lines, but it will be messy.
Transmission fluid will come out of the lines when you cut them.

C. E. White

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Dec 28, 1999, 3:00:00 AM12/28/99
to
Steve wrote:
>
> In the cooling lines that run from the tranny to the radiator.
> Does tranny fluid or radiator fluid run through these lines?
> These lines are rusted out in my 87 Toyota pickup.
> Some here at work insist its radiator antifreeze running in a loop through
> the tranny.
> Others say its tranny fluid running through the Radiator.
>
> When I cut these lines to remove them what will come out ? Antifreeze or
> transmission fluid?
>
> (already leaking and looks like tranny fluid to me!)
>
> Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.
>
> With these lines cut, can I run truck long enough to drive it onto ramps so
> I can work under it?
>
> Thanks Steve

Transmission fluid will come out (if you are lucky). There is a heat
exchanger in the radiator that transfers heat from the transmission
cooler to the coolant in the radiator.

Ed

dbug

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Dec 28, 1999, 3:00:00 AM12/28/99
to
On Tue, 28 Dec 1999 13:34:18 -0500, "Steve"
<ste...@NOSPAMultranet.com> wrote:

>In the cooling lines that run from the tranny to the radiator.
>Does tranny fluid or radiator fluid run through these lines?
>These lines are rusted out in my 87 Toyota pickup.
>Some here at work insist its radiator antifreeze running in a loop through
>the tranny.
>Others say its tranny fluid running through the Radiator.
>
>When I cut these lines to remove them what will come out ? Antifreeze or
>transmission fluid?
>
>(already leaking and looks like tranny fluid to me!)
>
>Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.
>
>With these lines cut, can I run truck long enough to drive it onto ramps so
>I can work under it?
>
>
>Thanks Steve
>


If it's not trans fluid - you're in trouble for sure!

cmbower

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Dec 28, 1999, 3:00:00 AM12/28/99
to
Trans fluid runs through the tranny cooler lines. DO NOT cut those lines
with a Dremel tool...tranny fluid is flammable, but not extemely so....the
problem is with a Dremel tools you'll get filings and metal shavings in the
lines and your tranny won't like that at all! Get a small tubing cutter to
cut them with. Also, do not use fuel line to patch them with, it won't stand
up to the tranny fluid for long. If you must patch them, use power steering
return line or Weatherhead hose.....5/16 or 3/8 diameter should do it and
double clamp the connections.

billk...@hotmail.com

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Dec 28, 1999, 3:00:00 AM12/28/99
to
Charlie wrote:
>
> Most of us don't even use the radiator's built-in tranny cooler. Get an
> external transmission oil cooler - it'll do your transmission some good
> to cool down better.

MOST!?????

Steve

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Dec 28, 1999, 3:00:00 AM12/28/99
to

> >
> What is preventing you driving the vehicle onto the ramps, then
> cutting the lines?


Lines are already busted!

Steven Yeske

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Dec 28, 1999, 3:00:00 AM12/28/99
to
Transmission fluid only. Use a tubing cutter to cut them. Leaves no junk to
let into lines and gives a good cut to flair for reconnection with a steel
brake line. Compression fittings and rubber hose are not recommended. Good
Luck....
"Steve" <ste...@NOSPAMultranet.com> wrote in message
news:84avth$qml$1...@bob.news.rcn.net...

DDDservice

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Dec 29, 1999, 3:00:00 AM12/29/99
to
I know the subject here is a Toyota and I'm sure there is ATF in the cooler
lines, but not all cars are that way. Audi has used the concept of sending
lower radiator coolant through lines to the transmission mounted tranny cooler.
Glenn

>>In the cooling lines that run from the tranny to the radiator.
>>Does tranny fluid or radiator fluid run through these lines?
>>These lines are rusted out in my 87 Toyota pickup.
>>Some here at work insist its radiator antifreeze running in a loop through
>>the tranny.
>>Others say its tranny fluid running through the Radiator.
>>
>>When I cut these lines to remove them what will come out ? Antifreeze or
>>transmission fluid?
>>
>>(already leaking and looks like tranny fluid to me!)
>>
>>Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.
>>
>>With these lines cut, can I run truck long enough to drive it onto ramps so
>>I can work under it?
>>
>>
>>Thanks Steve
>>
>
>

Mike Hall

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Dec 29, 1999, 3:00:00 AM12/29/99
to
It is transmission fluid. Don't use a dremel tool to cut the line but
rather a tubing cutter. then you can replace the section with
compression fittings. I assume you plan on removing it from the radiator
and cutting the line further back toward the transmission.

Mike H.

Charlie

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Most of us don't even use the radiator's built-in tranny cooler. Get an
external transmission oil cooler - it'll do your transmission some good
to cool down better.

Steve wrote:
>
> In the cooling lines that run from the tranny to the radiator.
> Does tranny fluid or radiator fluid run through these lines?
> These lines are rusted out in my 87 Toyota pickup.
> Some here at work insist its radiator antifreeze running in a loop through
> the tranny.
> Others say its tranny fluid running through the Radiator.
>
> When I cut these lines to remove them what will come out ? Antifreeze or
> transmission fluid?
>
> (already leaking and looks like tranny fluid to me!)
>
> Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.
>
> With these lines cut, can I run truck long enough to drive it onto ramps so
> I can work under it?
>
> Thanks Steve

--
--------------------------------
Charlie B. Han
era...@cybernex.net
ch...@alpha.fdu.edu
Visit my page @ http://www2.cybernex.net/~eraser

'81 Ford Thunderbird, 302 V8, 4-speed AOD, 180 hp, 2-bbl

Charlie

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Dec 29, 1999, 3:00:00 AM12/29/99
to
I don't think Audi was the one who pioneered this concept, external
transmission coolers are about first and foremost thing on a performance
modification to-do list (considering it's so easy and inexpensive)


DDDservice wrote:
>
> I know the subject here is a Toyota and I'm sure there is ATF in the cooler
> lines, but not all cars are that way. Audi has used the concept of sending
> lower radiator coolant through lines to the transmission mounted tranny cooler.
> Glenn
>

> >>In the cooling lines that run from the tranny to the radiator.
> >>Does tranny fluid or radiator fluid run through these lines?
> >>These lines are rusted out in my 87 Toyota pickup.
> >>Some here at work insist its radiator antifreeze running in a loop through
> >>the tranny.
> >>Others say its tranny fluid running through the Radiator.
> >>
> >>When I cut these lines to remove them what will come out ? Antifreeze or
> >>transmission fluid?
> >>
> >>(already leaking and looks like tranny fluid to me!)
> >>
> >>Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.
> >>
> >>With these lines cut, can I run truck long enough to drive it onto ramps so
> >>I can work under it?
> >>
> >>
> >>Thanks Steve
> >>
> >
> >

> >If it's not trans fluid - you're in trouble for sure!
> >

--

Charlie

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Dec 29, 1999, 3:00:00 AM12/29/99
to
All of my friends have external tranny coolers installed, and some of
the people in the pontiac newsgroup with their Grand Prix GTPs always
install a tranny oil cooler - almost like the first thing they do when
they buy the new car. It doesn't void any warranties so why not do it?

billk...@hotmail.com wrote:


>
> Charlie wrote:
> >
> > Most of us don't even use the radiator's built-in tranny cooler. Get an
> > external transmission oil cooler - it'll do your transmission some good
> > to cool down better.
>

> MOST!?????

Steve Bigelow

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Dec 29, 1999, 3:00:00 AM12/29/99
to
I believe he was refering to the "us" part, and not the "most" part....and
wondering to what group you were refering.
I'd love to install a cooler, but I have one of those tricky Audis, with the
trans mounted cooler. Tranny fluid transfer to it is by banjo bolts.

Phooey.

Charlie wrote in message <386A0276...@cybernex.net>...

Kevin Mouton

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Steve wrote:
>
> In the cooling lines that run from the tranny to the radiator.
> Does tranny fluid or radiator fluid run through these lines?
> These lines are rusted out in my 87 Toyota pickup.
> Some here at work insist its radiator antifreeze running in a loop through
> the tranny.
> Others say its tranny fluid running through the Radiator.
>
> When I cut these lines to remove them what will come out ? Antifreeze or
> transmission fluid?
>
> (already leaking and looks like tranny fluid to me!)
>
> Is tranny fluid flammable? I'd like to use my dremil tool to cut the lines.
>
> With these lines cut, can I run truck long enough to drive it onto ramps so
> I can work under it?
>
> Thanks Steve

Transmission fluid runs through those lines at about 60 psi when the
engine is running. Use a tubing cutter to cut them so as to avoid
contaminating the inside of the lines with metal shavings. I doubt the
fluid would ignite, but it is somewhat flammable (like engine oil). If
you cut the lines then try to drive up the ramps you will loose about 6
quarts of transmission fluid in just a few seconds so you better hurry.
<grin>
--
* WARNING * Reply address may contain anti spam.

Kevin Mouton
Automotive Instructor
http://www.eatel.net/~kevinm/homepage.htm
"If women don't find you handsome,
they should at least find you handy" Red Green

Brian Crist

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Dec 29, 1999, 3:00:00 AM12/29/99
to
I've got to agree with that "MOST"???...unless you are doing any heavy
towing (or driving your auto trans like it is a manual), an aftermarket
cooler is not necessary...


Robert Erck

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Maybe not. There are rumors about transmission problems caused by running
too cold. In fact, because the tranmission uses the radiator for heat
exchange, it is likely that the the transmission is *warmed up* by the
ratiator on cold days to correct operating temperature. Does anyone
know?
Bob
---------------------

Charlie

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Not even for heavy towing, a cooler transmission is a happy transmission
=)
The Police Interceptor Crown Victoria comes with Power steering fluid
cooler, transmission oil cooler, and engine oil cooler. I don't see cops
towing stuff around, but they do idle a lot, and sometimes have to idle
in the hot weather or chase at WOT in varying weather. I would see a
transmission oil cooler as cheap insurance for a long-lasting
transmission. Considering aftermarket coolers don't void warranties,
don't cost a great deal and easy to install (if you have the room of
course).

--

Charlie

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Dec 29, 1999, 3:00:00 AM12/29/99
to
I don't know about your transmission, but my 81 Ford AOD warms up during
idle in 27F weather. I can feel warmth from the transmission line during
idle (about 3-4 minutes worth of idling). I've heard those same rumors,
but haven't heard otherwise.

--

Ted Melina Raab

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Charlie wrote:
> I don't think Audi was the one who pioneered this concept, external
> transmission coolers are about first and foremost thing on a performance
> modification to-do list (considering it's so easy and inexpensive)

Yes, but aren't most external transmission oil coolers mounted in or in
front of the engine coolant radiator? W/ these you bring tranny oil from
the tranny to the radiator. DDDservice said that Audi used a cooler
mounted on the tranny and brought engine coolant to it from the
radiator.



> DDDservice wrote:
> > I know the subject here is a Toyota and I'm sure there is ATF in the cooler
> > lines, but not all cars are that way. Audi has used the concept of sending
> > lower radiator coolant through lines to the transmission mounted tranny cooler.

--
Ted Melina Raab, Austin, TX
'94 Buick Roadmaster wagon
- Union Yes! -

Eric

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Dec 30, 1999, 3:00:00 AM12/30/99
to
In article <386996FC...@cybernex.net>, Charlie <era...@cybernex.net>
writes:

>Most of us

Speak fer yaself. ;-)

>don't even use the radiator's built-in tranny cooler. Get an
>external transmission oil cooler - it'll do your transmission some good
>to cool down better.

In cold climates, the in-tank "cooler" (heat exchanger, more properly) helps
bring the trans up to operating temp more quickly, since the engine warms up
faster than the trans.

Eric
communications received at T A N G L E K E N L at A O L dot C O M
Posting address is not replyable, de-spam-block stripping or not.

Dan Timberlake

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Dec 31, 1999, 3:00:00 AM12/31/99
to
On Wed, 29 Dec 1999 09:48:17 -0600, Kevin Mouton
<kev...@garbage.eatel.net.> wrote:


>Transmission fluid runs through those lines at about 60 psi when the
>engine is running. Use a tubing cutter to cut them so as to avoid
>contaminating the

Hi Kevin,
the few transmissions (torqueflite/AMC and Turbo350) I've worked on
seem to to dump the hottest oil (coming out of Torque converter) to
the cooler,then let it dump right back into the trans sump, that is
wide open. It would seem (and I never measured it) the pressure would
be near zero/atmospheric, Unless:
1. The entire trans is pressurized to 60 psi (which would be tough
to restrain with rubber seals, and would probably pop the dipstick up)


_or_

2. There is a restriction at the end of the run

_or_

3. The oil cooler is a significant restriction, in which case the
return line would be very low pressure.

Just asking, since I have the feeling you are inquisitive, and speak
from experience, unlike the rest of us dreaming mouth mechanics.

thanks,

Dan

Eric

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Jan 1, 2000, 3:00:00 AM1/1/00
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In article <84ie6l$6c7$1...@bob.news.rcn.net>, "Steve" <sri...@gis.net.com>
writes:

>> What is preventing you driving the vehicle onto the ramps, then
>> cutting the lines?
>
>
>Lines are already busted!

Maybe you can brush off any loose flakes of rust, so they don't contaminate the
system, then temporarily clamp a short loop of hose from one line to the other.
Not having the cooler wouldn't matter for just the few minutes, and it would
keep the oil from gushing all over.

If there's any length of steel line left to clamp onto, that is.

Toyo207

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Jan 4, 2000, 3:00:00 AM1/4/00
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its tranny fluid.Im a toyota tech in ct

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