Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

ATF Fluid Flow Pattern, to Radiator? Please!

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Old Aug 1, 2003 | 08:42 AM
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Default ATF Fluid Flow Pattern, to Radiator? Please!

I can't find the post, there was about this!?

I have a 5th Gen, and need to know what the pipe coming out of the tranny towards the drivers side is and the one towards the passenger side?

I don't want to hook it up the wrong way..and screw things up.
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Old Aug 2, 2003 | 09:36 AM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (AcCO12D95)

^Bump^
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Old Aug 2, 2003 | 10:10 AM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (AcCO12D95)

What are you doing, installing a secondary ATF cooler?

If so, it doesn't matter about which inlet/outlet on the new cooler goes to where, just as long as the connections are tight and tidy.

If not, to be honest, I can't remember which is incoming and which is outgoing.
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Old Aug 2, 2003 | 02:02 PM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (carolinaACCORD)

Yes, i'm installing a secondary atf fluid cooler, but in the instructions it says the fluid should go through the radiator first, then through the aftermarket cooler than back to the tranny...

So what I did was, took the line off from the tranny, which goes to the drivers side of the radiator and routed it through the aftermarket cooler then back to the tranny...

I had it connected to the passenger side hose at first and thought i did it wrong, so i switched the cooler to the other line, which is the way i have it right now..

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Old Aug 2, 2003 | 04:09 PM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (AcCO12D95)

do I connect it to the line that is going to the back of the tranny or to the line that connects to the front of the tranny? These are the hard lines that go back into the tranny...

I want to do this the correct way and do not want to end up with a halfass job...
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Old Aug 4, 2003 | 09:08 PM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (AcCO12D95)

^bump^ I remember someone here works at Honda..
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Old Aug 4, 2003 | 11:24 PM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (AcCO12D95)

Just leave the stock one disconnected or get a MT radiator without it. a quick way of finding out is to have someone start the car with you peering under the hood. See which tube fluid comes out of first. Really, it works.

Honestly, I'd leave the stock cooler disconnected... just more tubes to break, more connections to leak, etc.... an aftermarket cooler should do some real good by itself.
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Old Aug 5, 2003 | 05:23 AM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (D114)

I totally disagree. I installed mine keeping it connected with the stock cooler for more cooling area. Yes, the aftermarket cooler is already leaps and bounds above the stock p.o.s., but the more the better. That is, because having both still has less than a 1% pressure loss.

To really find out which is the outlet/inlet, just let your car sit until the motor is cold, then start it up and go touch each of the hoses. The one that's the hottest is the outlet pipe (from tranny).
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Old Aug 5, 2003 | 10:17 AM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (carolinaACCORD)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by carolinaACCORD &raquo;</TD></TR><TR><TD CLASS="quote">I totally disagree. I installed mine keeping it connected with the stock cooler for more cooling area. Yes, the aftermarket cooler is already leaps and bounds above the stock p.o.s., but the more the better. That is, because having both still has less than a 1% pressure loss.

To really find out which is the outlet/inlet, just let your car sit until the motor is cold, then start it up and go touch each of the hoses. The one that's the hottest is the outlet pipe (from tranny).</TD></TR></TABLE>

I did that, but it was very hard to tell for some reason, because both seem to be warm..I guess because no air was hitting the radiator..
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Old Aug 5, 2003 | 10:27 AM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (AcCO12D95)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AcCO12D95 &raquo;</TD></TR><TR><TD CLASS="quote">

I did that, but it was very hard to tell for some reason, because both seem to be warm..I guess because no air was hitting the radiator..</TD></TR></TABLE>

10-4. I'll look in my Helm's manual tonight if you wanna wait that long. But like I said, I just put mine in and went.
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Old Aug 5, 2003 | 10:39 AM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (carolinaACCORD)

Thanks! CarolinaACCORD

But I took a picture here to make things hopefully a little easier.

In this picture you can see the two gold colored looking lines, one that connects to the front of the tranny and the other that goes to the back of the tranny.

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Old Jan 7, 2004 | 03:09 PM
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Default Re: ATF Fluid Flow Pattern, to Radiator? Please! (carolinaACCORD)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by carolinaACCORD &raquo;</TD></TR><TR><TD CLASS="quote">To really find out which is the outlet/inlet, just let your car sit until the motor is cold, then start it up and go touch each of the hoses. The one that's the hottest is the outlet pipe (from tranny).</TD></TR></TABLE>

WRONG!

When the car is cold (sitting overnight), you start the car up and feel which hose is warmer. This is the line the takes fluid back INTO the transmission.

The reason why is because the stock cooler is supposed to warm up the transmission on start up, and help keep it at a constant temp during normal driving.

I autocross my Accord, so I installed a B&M SuperCooler inline. The fluid flows out of the transmission, into the radiator, into the SuperCooler, and back into the transmission.

The SuperCooler has a good fluid bypass feature that prevents the fluid from being overcooled on startup, so the stock cooler can do it's job and warm up the tranny quickly...

I posted in this old thread so anyone doing a search won't hook up their cooler wrong
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