woodlander1

Happened Friday night,
Driving down main street and my TL was shifting perfectly and all of a sudden it started revving up and stopped catching any gear, any of you guys might know the Issue at hand?
Thank you.

eastcoastguy

Transmission is probably done with. You could change the fluid and pressure switches but it sounds like it is too late.

thoiboi

Could be axle or transmission, does it shift rough? When was the last time a fluid drain and refill had been done? How many miles? We need much more information leading up to this.

woodlander1

just had the trans serviced 10 days ago, did not have a problem before the service and was doing fine after till that one second it decided not to catch gears any more.

thoiboi

What was done to 'service' the engine? where was it done? what kind of fluid was used? I hope they did a drain and refill as opposed to a transmission FLUSH.

woodlander1

A drain and refill at the local Honda dealership. I think they used 3 quarts of ATF and a new washer.

thoiboi

Okay, that's good then. Can you check your axles/driveshafts and see if they are still intact?

woodlander1

yeah, everything is intact, tow truck driver said it might be the tras lost pressure! i don't really know what that means..

woodlander1

No Check engine light either..

thoiboi

No leaking fluid anywhere? Sometimes the transmission lines to the radiator get busted and all the fluid drains out. How's your fluid level?

woodlander1

normal fluid level. no grinding noise or ticking ..

thoiboi

Honestly, without being there, it's so damn difficult to diagnose this. I'm at my wit's end here, good luck OP

woodlander1

thoiboi, thank you so much for attempting.

pohljm

back to Honda dealer that serviced it and get codes read to diagnose. maybe switches? maybe toast

thoiboi

BreezyTL

iTrader: (8)

My trans did the same thing. Did a drain and refill, good for a week then started slipping in every gear. My best bet is it is toast. I'd go back to the dealer and ask questions.

woodlander1

would you guys recoend rebuilding or a reman trans?

MarcDavidoff

If your trans is indeed done, look into the AV6 swap (06/07 accord v6 trans swap). There are threads in the 2G section

BreezyTL

iTrader: (8)

Rebuild or re manufactured will run you $2000-$3500 depending where the job is done at. Can always do what MarcDavidoff said.

thoiboi

https://acurazine.com/forums/second-...n-swap-905115/

woodlander1

But my car is a 2005.. does not look like a swap with an accord trans is possible..

MarcDavidoff

Yes it will work from 2004-2006 3G TL

thoiboi

You're misreading it.. it's saying you'll be grabbing an 06/07 Accord v6 transmission.

JMiles_T

The transmissions are interchangeable. I'm driving my 2004 TL with a 2007 accord transmission.

woodlander1

I drove the TL this morning and it was driving perfect..
transmission started acting up when it warmed up.

Just pulled P0741 code..
is it fixable with out spending a bunch of money?

YeuEmMaiMai

transmission faults will not typically set a check engine light. usually D5 will blink or there will be pending codes. Some generic coders will set a check engine light like the one you mentioned

P0741 ACURA - Torque Converter Clutch Circuit Stuck Off

fluid low, fluid dirty...
circuit may be open
most likely solenoid valve is toast

Check your wiring and make sure all is well, you can use a decent scanner to command the circuit on and off.

mikefed

I had a similar issue - turned out to be a blown radiator. Needless to say, I was glad it was that and not a trans.

mbetter

Hello Everyone. This is my first post - I just created an account as I've started searching forums for an issue with my parents' car that popped while I am home for the holidays. This looked like a great place to jump and ask for help. I don't mean to hijack this thread but I have a very similar situation on my hand's as the OP. I am hoping there has been some resolution though it seems as though the issue is very recent based on post dates. On an optimistic note, maybe that means people are paying attention to it still?

The anecdote: My mom says last week her 2006 3.2L TL (with an automatic transmission and 120kish miles) would randomly surge once in a great while and from what she's describing it sounds like it was slipping, no sudden jerking into gear. She never mentioned it to anyone and shrugged it off. On the night of December 26th it randomly started slipping in traffic. No codes. The parents decided to leave it sitting in a truck stop parking lot over night. The next morning I went with them to investigate and found no leaks, fluid level at top mark when cold (albeit dark in color) and intact CV axles (I had suspected based on how suddenly they described it to occur). Upon interrogation the fluid was found to never have been changed. Regardless, here is where it gets weird to me: I started it and drove it gently without issue for a few miles (until warm) and then it started slipping. Then, within probably the distance of a 1/2 mile under a very slight grade at about 25 mph, it went from what felt like a solid connection between engine and wheel to a rapidly deteriorating slip situation. Eventually, it would not move from a dead stop on flat ground after I got over the small hill. I tried shifting in "manual mode" and cycling through PRNDL, levering up and down from 1 to whatever it would max to while sitting, etc and would get no change or odd noises from the transmission. Weirder still is that I turned the car off and turned it back on roughly 10-15 seconds later and it drove another 5 miles home without any issue and up the driveway into the garage. Still no codes.

I got home, discussed with the local Acura dealer on the phone and had AAA haul the car (which I backed out of the drive way and drove into position for the tow truck without issue). The dealer seems to think a fluid change might help but wasn't sure. Said they couldn't do flushing or else wouldn't, which I have read to be wise but could do a fluid swap for $200. Also mentioned these pressure switches everyone is talking about and how chronic transmission issues are with these cars. I see you may be able to clean them. $5,000 to replace. They've never seen this issue before at this Acura dealer. Craziness.

A few questions:
1. Does Acura have any equipment that would provide a better cleaning than I could at home with the 3X3 method?
2. No filters are on these transmissions, correct?
3. What normally fails in these transmissions that constitutes a rebuild? Mechanically, what wears out or breaks? What would one look for, etc?
4. Any recommendations? I'm planning to read up on this accord swap I saw in one of the threads.
5. Does anyone know what the algorithm would be behind the pressure switches? In other words, what are they used for, logically in the TCU and is there a way to test them? Simple open/closed continuity test?

I have had automatic transmissions apart before to replace internals with success so I think I might give it a shot to rebuild for them if it gets to that point... I hope not. I have access to a machine shop, have a decent garage, a mechanical engineering background/degree and like coffee and am frugal so I think i have half a chance.

I have read about cycling power on these to make the issue go away and come back later. Someone on a CRV forum suspected that there was a chance that sludge or debris could be getting picked up in a suction tube and dropping out but I haven't seen the design of this tranny to know if they are similar enough to compare.

So any feedback on the above or comments from similar situations would be appreciated!!!!

Many thanks,
Matt

MarcDavidoff

^ Hate to say it but your parents trans is very likely done. These transmissions (thru 2006 at least) have design flaws (you can read details on different threads- esp the 2nd gen forum). They need frequent fluid changes (like every 15k miles or so) to try to at least keep them alive for the longer haul. Not changing it for 10+ years and that many miles is just a death blow. The reason it shifts ok at first when cooled down is the fluid is loaded with worn clutch material and it is clogging up passages when hot. It settles down when let sit. So you may get some friction when cold but it doesn't last long.
The best option at this point would be this solution of installing a used 06/07 accord V6 trans which is updated and more robust.
https://acurazine.com/forums/second-...n-swap-905115/
You can try doing a 3x3 fluid swap and see what happens but it may be throwing money away

mbetter

Thank you. Your explanation makes sense. Might cross my fingers on the change and prepare via research for the aftermath...

Again, thank you,
Matt

csmeance

most 04-06 models have a replaceable filter on the trans that is supposedly not user replaceable, about $30.

I'd replace the fluid, look at the pickup tubes as mentioned and clean them out. Also try sticking your finger in the drain pain for the trans fluid and see how much silt/sludge is at the bottom. If there is a bit, you'll need a trans rebuild. You can buy whole kits from americanpowertrainwarehouse or other companies and do it at home or you can do an Accord V6 trans swap.

YeuEmMaiMai

you can also remove the pressure switches on the unit and clean out the screens.... at this point it would not hurt. Also the newer Honda fluid is better as it is thinner and flows better.

mbetter

Hi everyone, I have an update and a question.

I changed the filter with a new one. Took the two switches out and cleaned them and did the 3x3. I even did a pre-rinse with sea foam trans tune and tried Lucas afterwards. I was doing about 5 miles between each 3 quarts.

It got a little better but on mile 12 after adding the last 3 quarts it fistarted slipping in some hilly back roads in central PA during a test drive. That's over 4 times as far as I was getting before all the effort but still not acceptable for a car...

I also spoke with the dealer and he said the transmission failure mode internally is varnish from aging fluid. It can coat and clog things reducing friction and flow, respectively.

So the question I have is around the av6 swap. The sticky someone listed above said it only works for 2000-2003 TLs. The post was made in 2014 so I am wondering if it works with the 2006 as well?

Thanks!

MarcDavidoff

Matt- yes as I mentioned on post above it will work on 04-06 as well