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FAQ: 06-07 AV6 Transmission 'Swap'

 
Old 11-23-2018, 03:23 PM
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02 CL AV6 Swap

I just completed this swap via precise directions found in these forums February 2017. Pretty much everything was exactly as detailed with the exception of the "cooler" on top of the trans. I only swapped the top part as the hoses didn't align. My fear now is in my possible misreading/understanding may be I should have changed more parts under it? It's currently November 2018 and the car has ran basically perfect until a month ago, started clunky shifting developing into trans slipping shortly failing after slippage. Everything worked great actually quite perfect and performing better beyond expactations to this point. I write this for the next guy that's gonna tackle it himself. Where did I go wrong with the swap a 114k mi 2006 av6 only to have it fail. Maybe just a rough salvage trans or did I misinterpret something and muck something up with the swap. Haven't seen much on longevity in reference so wondering where I fowled fellas....
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Old 11-23-2018, 03:27 PM
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02 CL AV6 Swap

Pardon my manners also but would like to thank everyone who's posted the swap details and needs that made it possible for me to make it happen in my driveway! The car gave me almost a year of excitement and fun while I'm only into it for a little over 1,200 car and trans/parts! You guys are awesome!!!
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Old 02-08-2019, 11:26 PM
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I recently performed an AV^ swap back 09/2018. I had the trouble with the torque conver not being the correct size. I got a rebuilt converter from Transtar ( HO79 ) and installed it. Car worked perfectly to start but after a few days it started giving me the P0740/VCS/! lights. The torque converter that came with the trans was damaged internally due to an accident. So I assumed that the transmission must have been damaged as well. I drove the car for the last 5 months with the cel on and after driving about 25-30 miles the vcs/! light would come on. The car also was slow to got into gear when cold, but after about 3 seconds or a rap on the throttle it acted normally even if I shut if off again. If I let it sit for a few hours then slow engagement would return. I was coming up on my 6 month warranty and decided I had better get it swapped out. So now i have swapped out the transmission with another used transmission and the same lights and code are back. This time the lights come on much quicker than before. I also notice now that when the t/c locks up the rpm is much more stable than the other transmission ( hadn't noticed that ). I did not use the donor torque converter as I had a relatively fresh one. I am now wondering if the converter could be the issue? Any help/insight/diretion with this would be greatly appreciated.

Mike
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Old 02-11-2019, 12:00 PM
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P0740-Problem in the lockup control

The service manual does a good job of helping with troubleshooting this:
  1. Check the pressure which that sensor is monitoring
    1. pressure good-replace the sensor
    2. pressure bad-some work to other parts of the lock up control
On the bright side: I didn't see anything in there about replacing a transmission, or torque converter. It sounds like you problems are elsewhere which may explain why the problem persists.
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Old 02-17-2019, 09:42 AM
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Hello, I am back. I replaced my 2003 tl with a 2007 AV6 (documented in pgs appox 13 of this forum). Worked great for 2 years until daughter just wrecked car. Bought another TL with the transmission issue (for practically nothing) and will be doing this transmission swap again. Getting more difficult to find the 2006-2007 AV6 from Accord. LKQ still has some but want $1,000 for it.

I have found some 2006-2007 Odyssey transmission for much less. I have re-read the forum but cannot find explicit answer of whether the Odyssey will work.

Skirmish, or others, will the Odyssey work or just pay up for the Accord?
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Old 02-17-2019, 10:07 AM
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Originally Posted by pbeck66 View Post
Hello, I am back. I replaced my 2003 tl with a 2007 AV6 (documented in pgs appox 13 of this forum). Worked great for 2 years until daughter just wrecked car. Bought another TL with the transmission issue (for practically nothing) and will be doing this transmission swap again. Getting more difficult to find the 2006-2007 AV6 from Accord. LKQ still has some but want $1,000 for it.

I have found some 2006-2007 Odyssey transmission for much less. I have re-read the forum but cannot find explicit answer of whether the Odyssey will work.

Skirmish, or others, will the Odyssey work or just pay up for the Accord?
I am by no means an expert on this, but I believe 2007 Odyssey transmissions will not bolt up to a 2004-2006 TL engine; different mounting pattern. Regarding the 2005 and 2006 Odyssey transmissions, they may well bolt up, but I have never heard they were upgraded to the BAYA engineering build.
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Old 02-17-2019, 11:11 AM
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Got it, ok. Guess it better to stick with the higher priced accord V6. Thx
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Old 02-18-2019, 02:55 AM
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Originally Posted by Operationalist View Post
Hey they007. Sorry for the late reply... Just wanted to notify you that I'm experiencing word-for-word the exact same symptoms that you are. I've managed to put another 10k or so on my trans in the meantime despite the lingering issues. The one drawback I've noticed is that my new trans gets a little lost looking for TC lockup/"5th gear" under WOT. But as long as I accelerate up to highway speed at ~75% throttle or lower everything seems to operate smoothly.

I also did a 3qt drain and fill very recently. Seems like I probably have a slow trans leak somewhere around the TC and bell housing, but besides that the fluid I drained was pretty clean and the drain magnet didn't seem overly gunked. I too am hesitant to drop a bunch of money on solenoids or harnesses without some certainty that it will resolve my problems.

TO ALL FUTURE AV6 SWAPPERS: Please take a measurement of your flexplate/torque converter diameter during your installation and post it in this thread (measure from center of bolt hole to opposite center of bolt hole). It could be invaluable info to those of us like they007 and myself to know if others are using the 10.75" flexplate/TC (e.g. Dacco HO18) as opposed to our 11.25" flexplate/TC (e.g. Dacco HO21). Also, a post-installation update describing whether or not you have experienced the same P0740 CEL and TCS / "!" light-up would be instructive as well. Thank you to anyone in advance who can help us out.

If it appears that others use a 10.75" flexplate/TC and do not experience the same problems, I'm inclined to crack mine open again and swap in a 10.75" setup before the end of this year.
Hello,
j know this is a thread for the 2g TL , but Iím doing this swap in a 3g TL. After pulling the trans I took the tc off of it I noticed what looks like a shim on the tc hub/shaft. I donít have a micrometer but when I got a stiff piece of card stock it is obvious that the shim make the distance from there to the end of the hub is a the shims difference different. Has anyone seen this? My car is a 06 TL and the BAYA I pulled from a 07 Accord. As this is my only car, a timely response would be great. Thank you in advance.
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Old 02-18-2019, 05:23 PM
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Part of a repair sleeve?

is it solid? perhaps it is the reinforcement in the TC mainshaft seal? what the condition of that seal?
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Old 03-05-2019, 07:54 AM
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Swap complete...

Thanks to all the great info here and the .pdf of swap info kindly created for those of us doing it a few years later than some, I just completed my AV6 swap into my 2003. Donor trans from an '06 AV6 Coupe with 90K miles.

No major issues, however getting the CV axles out of the trans can prove difficult particularly on the passenger side. Thankful for wobble extensions and air ratchets! I changed the engine rear main seal, both axle seals, and the torque converter seal while I was in there. Did the whole da%n job only to try and mount the torque converter to flex plate after tranny was in and all suspension was installed. WRONG effin' torque converter. I apparently ignored all the notes on here and ordered a converter from a BAYA which fits fine, but the bolt holes are about 1.5mm too far inset for the flex plate to mount. Soooo, I did the tranny job a second time. Total time involved (without the mixup) was about 9 hours, I could do another one right now in about 7 I would think.

Car drives like a dream, found out my original TL range position switch was toast on the tranny... hence my intermittent no-crank condition. Car did NOT know it was in park or neutral, so I replaced it with a new OE switch. Now I have full 5-gear operation, sport shift works great, and no more MIL light for violent shifting/shuddering issues. Thanks to all who have contributed, if you want to see the tranny removal in a much faster 30-second clip, click the link below for a time lapse.

Time Lapse TL Trans Removal

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Old 03-05-2019, 11:57 AM
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I almost ended up doing the same. Luckily, I thought of matching up the flexplate to the torque converter when both were out of the car (when I was changing the rear main seal).

I still had an issue after bolting up the first hole on the flex plate, but it turned out that I was bolting up one of the wrong holes on the plate. I rotated the crank almost once more, took off the original bolt and started over...this time I started bolting the two together on a hole that is accompanied by some additional holes immediately adjacent (I believe for timing or balancing).
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Old 03-05-2019, 01:37 PM
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Originally Posted by whitetiger5 View Post
I almost ended up doing the same. Luckily, I thought of matching up the flexplate to the torque converter when both were out of the car (when I was changing the rear main seal).

I still had an issue after bolting up the first hole on the flex plate, but it turned out that I was bolting up one of the wrong holes on the plate. I rotated the crank almost once more, took off the original bolt and started over...this time I started bolting the two together on a hole that is accompanied by some additional holes immediately adjacent (I believe for timing or balancing).
I did it too. Not use to there being those extra hole on the plate. I turned the drive plate and TC until I could see two holes lined up and started the bolt in the one I could actually get too.
I did the AV6 swap into my 06 TL. I donít know if the factory trans was that bad from the start(Iíve only had the car for about 46k of the 190k), but the difference is like night and day. The car would do 130 before, but that last 15mph took forever. Now at 130 it is still pulling hard. As I was pulling the trans I discover the drive plate was broken(I used the one from the Accord I was wise enough to grab out of the donor car) which explains why it sounded like the trans was locked up or in a bind. I swapped the trans as it was something I planned to do and the code I pulled from the trans said it was toast, but I canít help but wonder if it is still good. As a stop or emergency backup.
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Old 04-07-2019, 12:27 PM
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Is the BAYA in a V6 2003 Accord coupe the same as the V6 2006-07 Accord BAYA?

[QUOTE=whitetiger5;16384718]Part of a repair sleeve?

is it solid? perhaps it is the reinforcement in the TC mainshaft seal? what the condition of that seal?[/QUOTE

So hereís my question. What is the difference in a BAYA from 2003 Accord V6 coupe and the BAYA out of the 2006-7 V6 Accords? Iíd love to know. If any body knows or can point me in the right direction to find this info Iíd appreciate it.
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Old 04-18-2019, 10:43 PM
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[QUOTE=TacoTom1967;16408355]
Originally Posted by whitetiger5 View Post
Part of a repair sleeve?

is it solid? perhaps it is the reinforcement in the TC mainshaft seal? what the condition of that seal?[/QUOTE

So hereís my question. What is the difference in a BAYA from 2003 Accord V6 coupe and the BAYA out of the 2006-7 V6 Accords? Iíd love to know. If any body knows or can point me in the right direction to find this info Iíd appreciate it.
The sleeve is from a shift/lube system improvement kit. The instructions say its purpose is to keep a case bearing from walking into the seal.
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Old 06-14-2019, 11:50 AM
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I am kind of new into this I want to know is there a specific av6 transmission I should stay away from from what to what year that I can take it from and is there anything in the transmission that I need to change that it will not work in the TL.
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Old 06-14-2019, 01:40 PM
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did you read this thread? it's all here.

06-07 Accord BAYA trans.
Swap the trans harnesses
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