Hello, I have a 2000 tl 120000k miles. Recently the transmission starting slipping.

If I floor it going up a hill, the rpms flare and the car does not accelerate. In 5th when coasting, the rpms are not stable, they rise and fall slightly not linear like before, and when going up even moderate grades, the car cannot keep a steady speed and falls 10 miles per hour, as if I'm constantly losing power in the transfer. Clunking sounds are occasional in higher gears, as well as rpm rising and falling not in per portion to the vehicle speed and load.

1st and 2nd are fine, it seems to be 3-5 that have issues. 3rd gear to 4th takes the longest time to upshift.

I recently replaced the shift solendoids a and b. (One was the torque converter clutch lockup solenoid,) And did a drain and fill.

I'm pretty sure it's fucked and I'll have to buy a new car, but if any Acura wizard knows of a specific solenoid that might cause these issues (thinking about replacing the tcc lockup solenoid again.)

I do not use Honda transmission fluid, has anyone ever had an experience of using the wrong fluid and having severe trans problems like this and then switching to OEM and having the issue resolved?

Thanks in advance for any insight. I'm going to add Lucas slip fix as a last resort before buying a new car if nothing else seems probable. Thanks guys

 

Are there any ECU thrown DTC's present?

Maybe the video below will help?

You may have answered your own question.
There is no 'magic bullet' solenoid replacement to cure all your factory transmissions ills, returning it to reliability.
If reliability is what you seek, keeping the car from the crusher, than research / consider a non-hybrid 2006-07 BAYA Honda Accord V6 auto trans swap; otherwise, move froward with the purchase of a new car.