automatic transmission help

[1993 CB7 LX]

So my car is an auto and when i come to a stop and start going again, the motor just revs like its in neutral. Only thing that fixes it is if i turn the car off then back on again. Ive teied a different tcu but the one i got wouldnt go into drive at all. Whats happening? Fluid is good not burnt and full. Im out of ideas

[1993 CB7 LX]

Anything?

[1993 CB7 LX]

Really? no body has any ideas?

[emosun]

Shift solenoids maybe?

Next time you're at the junkyard just grab like 3 tcu's I wouldn't be surprised if both of the ones you have don't work. I got a stack of dead tcu's on a shelf here and it's getting hard to find ones that still work.

[1993 CB7 LX]

i cleaned the solenoids and now it will hold a gear and will get moving again after a stop, but slips LIKE HELL when it shifts into a new gear

[deevergote]

Is your D4 light flashing an error code? That should be your first step.

[1993 CB7 LX]

nope and i have tried 3 different tcus. 2 of them wouldnt even engage drive, but the one that has always been in my car works fine now, but the transmission slips badly between gears

[s2cmpugh]

If your experiencing slipping between gears or while engaged in a gear, then there's a good chance the transmission is toasted. Check the fluid level and condition to see how that looks.

[1993 CB7 LX]

fluid and level is good. ive been thinking the tranny is just dead.....just wanted to make surei guess because it works fine until it warms up which is kind of odd to me

[deevergote]

If your experiencing slipping between gears or while engaged in a gear, then there's a good chance the transmission is toasted. Check the fluid level and condition to see how that looks.

Exactly.
If there's no error code, there was never any need to replace the TCU or mess with the shift solenoid. Can't hurt, but it's just wasted money if you paid for that stuff.

The last thing you could try is changing the transmission fluid (when is the last time you did that?) If you really want to do it right, drain/fill/drive/repeat 3 times. It's expensive, and a waste of fresh fluid, but it will ensure you get all of the old fluid out of there. If you don't want to bother, then a simple drain and fill will suffice. Be sure to use Honda ATF. Nothing else. No additives, no fancy aftermarket junk. Honda fluid. Plain and simple.

[1993 CB7 LX]

last time i changed the fluid was about 2 years ago when i installed the transmission. i used genuine honda atf and always have. ive checked the fluid, its not burnt, doesnt smell weird and its at the level it should be. im thinking it just might be time for a 5 speed swap...