Hello, I am new to this forum. I have a 2000 TL with some shifting issues and was wondering if anyone could help. Anyways, the tranny went bad so I took it to my buddy who has an auto repair shop and he rebuilt it for me. New torque converter, master rebuild kit, honda fluid and all. The problem is sometimes when I brake, or turn, the transmission would seem to switch gears on me. We think that it's something electrical and not mechanical like internal but haven't quite figured it out yet. My buddy who has rebuilt a lot of Honda and Acura transmissions has never seen anything like this. Any help or advice would be appreciated in advance.

Storm.

 

By switch gears you mean it up shift or down shift on steady speed on turns ? Did you recheck the fluid to make sure that it is full ? Lower fluid level may make a slip condition going corners.

 

Grade logic-? This is from the transm. FAQ sticky:

These characteristics are normal; they should not require you to call your Acura dealer:
Quick downshifts. The transmission has a computerized control system called grade logic. When going down a hill, even a light touch of the brake pedal can cause grade logic to downshift to the next lower gear. Downshifting helps to slow the vehicle through engine braking.
Does not always shift through the full range of gears. This can also be caused by the grade logic system keeping the transmission in the optimum gear for different driving conditions.

When you stated "seems to switch gears" is it actually shifting? (Watch tach to verify)

 

Well, it's not the fluid because we checked the fluid level and it is good. Actually it only does it when we go to make a turn. If we don't turn then it doesn't act up. I said that it switches gears but what I just found is that everytime we slow down, brake, and make a turn, the transmission goes into Neutral. No other gears, just Neutral.

 

Don't understand how it could go into neutral-

 

I don't understand either but it does. It will go into neutral for a little bit then it will go back into to drive until the next turn. Was hoping someone has heard off a problem like this before.

 

That's not neutral, that's slipping.

https://acurazine.com/forums/2g-tl-problems-fixes-117/transmission-slips-when-turning-left-628955/

 

Yep, duh, don't know why I didn't realize that- your transm. is slipping, it can't be moving into neutral like that.

 

Well, I will tell my buddy to check the transmission again. He might have to rebuild it again then? Does it matter that it has been rebuilt one time already prior to his rebuild? Thanks.

 

my car does the same thing . not on turns though . from 1st - 2nd gear my car pulls to 2000 rpm and then it just revs up without pulling the car causing the car to jerk from the overrev when it does shift . i just let go of the gas and force it to shift .

i wouldnt recommend rebuilding a tranny because it still wouldnt last long . especially with the 2g tl's transmission . your better off finding a new one

 

There are probably no "new" ones to be had. From what I've read they are just rebuilt. Somebody correct me if need be.

 

A: There are no brand new ones to be had- even acura will only sell you a rebuilt unit
A-1: exception if a museum has a never driven one in storage~ and you can steal it

B: You can have these rebuilt any number of times- just replace the needed parts and install them correctly
That seems to be the elusive part to most shops- doing it right the first 2 or 4 times on a car

 

When a shop does it wrong- they have to redo it at no charge to customer for extra anything-
its their fault it wasnt given back to you perfect

 

my- you need to back off the gas long before you hit the overrev limiter
You know the trans has a bad bad problem- right?
nurse it/be gentle on the trans until you get a replacement plan for the trans or whole car
for now shift at 2500 --dont full throttle it

 

yes . i started to drive like a grandma when my trans started slipping . it over revs still from 1st-2nd even though im barely gasing, it just doesnt shift (only happens sometimes, most of the time it shifts). going uphill is the problem, my car revs going uphill and goes no where and jerks the whole time. my car stalled out one time when i was driving up a big hill. i had to put the car in neutral and slam the brakes and put my parking brake up since my steering wheel was lokced then

 

and yes i know there arent no new trannys, i meant "different" when i say new. kind of like when people say i just got a "new" car, but its actually used

 

Your steering wheel should not lock when the transm. is put into neutral-

 

that should ONLY happen if you turned the key to OFF- then you just lost steering control
Even with engine off and in Nuetral- you will have steering and brakes, both need more effort to work without their boost systems, but you can stop safely off the side of the road

 

i had no idea that my car had stalled out until i couldnt turn the steering wheel and my car was rolling backwards on D . so i just braked and e brake and put the car in neutral and start the car again and let it roll downwards

the road was a high slope road and very narrow . it wasnt a main road but rather a road leading up to a house . couldnt maybe fit 2 cars, but barely

 

Did any code come up at all ? Could be your torque torque converter clutch is staying on ?

 

nope no code . torque converter maybe . i posted the issue in the 1g section and everybody said it is most likely a tranny slip . found out that the previous owner rolled back 100k miles on the cluster in my car so it actually has 250k on it, original tranny. my cluster right now reads 138k . i guess its a good tranny if it lasted that long but i had the car for less than a year

 

Sometimes if the converter clutch came on too soon it may stalled the engine also, or if the converter clutch isn't holding, it will cause slipping in gears, many cases it wouldn't even move. If the comverter clutch is coming apart it will contaiminate the whole transmission anyway, and it will need to be overhaul, and flush out the cooler/radiator.

 

I almost forget about you lol. Check the axles and make sure that there is a lock clip at the end ? Make sure that they're all the way in, if the axle wasn't lock in the diff groove, when you making turn, the axle's spline pop out just a little bit enough to disengage the spider gears in the diff, so it will slips, but when you're going straight the axle pushes themself in.
If they're all good, ask your buddy who built the tranny if the internal filter has an oring on it, or if it got damaged it when he installed the filter. The reason is that when you're making turns, the fluid moves a little bit to the side, so the filter is sucking air instead of the hydraulic and will also causing it to slips.