Hi all, I recently completed an AV6 trans swap on my 2002 Acura TL. The car has 188k miles. "New" trans has 165k miles and is from a 2006 Honda Accord 3.0. I completed the swap following the guide on this forum, as well as the single removal video guide on YouTube. The swap was successful, as the car drives. However, I'm having some of the same issues that I did prior to the swap. The D5 light is flashing, I have a CEL for code P1753 (torque converter clutch solenoid) and the car seems to be stuck in 3rd, 4th, or 5th gear. It doesn't actually seem to be shifting and has very little get-up-and-go in D5. However, in reverse, the car is much more responsive. So far I have replaced the dual linear solenoids, single linear solenoid, and TCC solenoids, and tried clearing the codes each time by pulling the #16 fuse. I have good grounds to the transmission, and I have checked my #6 fuse.

The only thing worth mentioning is that one sensor (not sure of the name, but 22mm brown sensor below the battery tray, reachable from the wheel well) is visibly coming apart and was leaking ATF until tightened. This obviously needs to be replaced, but will it likely fix the issue?

 

correction* by pulling the #13 fuse, not #16.

 

im no mechanic but did the used transmission have any problems the seller listed?

 

OK, here is the REAL question, did you replace the torque converter?

If you reused the original torque converter, then why would you think a full transmission swap would fix a torque converter code?

If you swapped in the AV6 torque converter that you got with the transmission, then why didn't you buy a NEW torque converter???

Torque converters are akin to a clutch in a manual car. You NEVER, EVER reuse an old clutch on a swap unless it is low-mileage and "newish". If you put a 165k mile torque converter in (or worse yet, a 188k mile stock converter) than you created your own problems. Torque converters have a clutch that is internal to them, and they DO NOT last forever.

Honestly, the clutch falling apart is one of the primary reasons why the original transmissions had as many issues as they did. The clutch falls apart and clogs up the internal filter.

If you DID use a BRAND NEW torque converter and have the same issues, then the question comes down to what "replacement solenoids" did you use?

Honestly only OEM BRAND NEW or Rostra BRAND NEW solenoids should EVER be used in these transmissions. The VAST majority of solenoids on Amazon are used, untested and just cleaned up garbage. The VAST majority of cheap aftermarket solenoids are Chinese garbage that either are not calibrated (and yes, the linear solenoids are calibrated devices) and/or poor quality control/poor build materials.

When I redid mine I spent about $450 on new solenoids all around. They were all brand new Rostra that I got a deal on. OEM solenoids would have run about $750-850. I tried doing the Amazon solenoids and leaned a lesson that it is a giant waste of time. Almost cost me an engine since multiples failed and caused the car to downshift two or three gears while on the freeway at 70mph and almost overrev the engine. Luckily I have quick reflexes and recognized what was going on right away and threw it into neutral and let off the gas.

 

And, if you are talking about the brown pressure sensor, then it WILL affect not only shifting, but holding gear.

 

Interesting.
DP01TL, just curious, what is your experience / knowledge, in regards to the Rostra solenoids, to pair them on par with OEM units?
OE & Aftermarket Transmission Parts | Rostra Powertrain Controls
I just tested the website and it appears all one has to do is obtain the OEM solenoid / sensor part number and plug it into their search feature.
Once you get the Rostra equivalent part number, then an interweb search can be done to find the best prices.

 

In talking with LOTS of transmission rebuilders/remanufacturers (I have one of the primary transmission remanufacturers locally to me and actually stopped in and talked to them), ALL of them will only use either OEM or Rostra, nothing else.

Basically Rostra has a very good reputation of being quality OEM-level parts. Proper calibration, proper testing and quality build.

My Rostra solenoids have been operating since installation without issue. Per the remanufacturer they rarely have warranty issues on either OEM or Rostra parts.