Fresh transmission rebuild, still no second gear? Help please!

[zoomie]

I'm not sure if it goes into second doing that. I just know, driving it in D, it will shift out of 1st,and into second for a split second, then straight into 3rd gear. I have to manually shift it into 1st gear when at a dead stop,or it will stay in 3rd gear.

most AODS dont shift into 2d on thier own. aaand driving in od around town is going to make for some pretty goofey shifting patterns

[onedollarbob]

most AODS dont shift into 2d on thier own

Select "1" position on the column and the AOD will shift down to 2nd at speeds above 20-ish mph.

[zoomie]

Select "1" position on the column and the AOD will shift down to 2nd at speeds above 20-ish mph.

say whaaat? maybe a aodE but not an aod, unless i had soem special one in my last car,cuase i coudl rev the snot outta 1st before shifting and id be doing well above 20mph when i did

[zoomie]

Select "1" position on the column and the AOD will shift down to 2nd at speeds above 20-ish mph.

like i said it wont shift on its own...... moving the shifter is manul shifting, the rtranso wont do 2d gear by itself unless you have a valvebody that makes it do that

[84towncar]

most AODS dont shift into 2d on thier own. aaand driving in od around town is going to make for some pretty goofey shifting patterns

Before I even had to rebuild the trans, it did shift into second by itself. It would go, 1st,2nd,3rd, and to do overdrive I put it into OD and then getting up to 45mph I would let off the gas and it would go into overdrive.

NOW. In this case, for the first mile or so, it will give the same issue I had before it wouldn't shift out of first. It would drop in rpm's and just cruise down the road and wont shift. After a mile or so, it will shift out of first,go into second gear for about a split second, and then third. Coming to a stop at a stop sign, it will not always shift into first, it will stay in 3rd gear at a dead stop,unless I put it into 1st.

It had Always shifted into 2nd on it's own when I bought the car.

[84towncar]

It won't. It goes into 1st..it skips second/goes into it for a split second,then right into third,no automatic downshifting. When I bought the car, it would go into 2nd,3rd and od. And would downshift on it's own, it will not stay in second gear, it goes into it now yes,but only for a very very short time,then into 3rd. And I mean VERY short. You'll hear it go into second, and then the next thing you know it's already in third within half a second. Only going about 20mph. And before, taking off from a dead stop it would shudder,or felt like it was slightly slipping getting up to speed.

[84towncar]

Select "1" position on the column and the AOD will shift down to 2nd at speeds above 20-ish mph.

Not in my case of this transmission, that won't work for it. I could keep going and going with it in that position and I'd probably just succeed in blowing the engine.

[sly]

sounds like one of the valves is sticking or has the wrong springs. From what I know about automatic shifting... the accumulator and governor fight each other to set the shift point. seems like the 1-2 setup is borked.

[gadget73]

The AOD does not *hold* second gear unless you do the 1-D-1 shuffle. It does shift through second gear into third though if in D or OD. If started and left in 1, it does not shift into second, it just stays in first until you let off the gas, move the shifter, or blow the engine up. The 1-D-1 shuffle is generally said to be bad on the trans though, something about it applying the OD band for deceleration or something. I don;t know the specifics, but i've been told to not do this.

[johnunit]

The reason the 1-d-1 shuffle is bad, as I understand it, is because it momentarily applies Drive/3rd when you put it in that gear at speed, and if you shove it INSTANTLY back into 2nd through putting it right back into 1 on the collumn you've basically applied both at the same time, obviously causing slippage. I forget the exact reasoning but some tranny guru once said that if you go 1 to D and keep it in that gear for at least a second and a half then shift back into 1 to keep it in 2nd past normal upshift you prevent this conflict. I'm not 100% sure I understand why, but I've always basically waited until I'm quite close to shifting into 3rd before I move the gear shift back into 1 (to hold it into 2nd..my god this is confusing). This means that I've got most of the acceleration through 2nd gear to let the transmission resolve whatever weirdness causes the damage.

Tl:dr: 1-d-1 shuffle supposedly only causes damage if you go back to 1 almost instantly. wait a bit and, I've heard, the damaging action doesn't happen.

[84towncar]

The AOD does not *hold* second gear unless you do the 1-D-1 shuffle. It does shift through second gear into third though if in D or OD. If started and left in 1, it does not shift into second, it just stays in first until you let off the gas, move the shifter, or blow the engine up. The 1-D-1 shuffle is generally said to be bad on the trans though, something about it applying the OD band for deceleration or something. I don;t know the specifics, but i've been told to not do this.

Well as it is right now at this very moment,with it shifting into second for a very brief time,and into third,not downshifting at a dead stop unless put into 1st on the lever. Do you think I could drive it,and it not do any damage to the internals or anything? Because it doesn't seem like it has reason too,except the part where it doesn't shift into second until about a mile or so of driving it..because it will just drop rpm's just like before for about a mile or two,then it will shift.

[86VickyLX]

Well as it is right now at this very moment,with it shifting into second for a very brief time,and into third,not downshifting at a dead stop unless put into 1st on the lever. Do you think I could drive it,and it not do any damage to the internals or anything? Because it doesn't seem like it has reason too,except the part where it doesn't shift into second until about a mile or so of driving it..because it will just drop rpm's just like before for about a mile or two,then it will shift.

It really sounds like you have valve body issues... Swap it out for a known good one. Replace the separator plate too.

[84towncar]

It really sounds like you have valve body issues... Swap it out for a known good one. Replace the separator plate too.

How do I know if it for sure is..? Because I just had it completely rebuilt..I don't want to keep throwing money out on it if that isn't for sure the issue...I've done that enough so far.

[86VickyLX]

How do I know if it for sure is..? Because I just had it completely rebuilt..I don't want to keep throwing money out on it if that isn't for sure the issue...I've done that enough so far.

Well think of it this way, what inside the transmission controls shift points, shift feel, quality, timing etc? It's the valve body. What directs fluid throughout the transmission? The valve body. You need to make sure that, the valve body it torqued down properly, the separator plate is correct for the car, and those little metal balls are where they are supposed to be.

[84towncar]

Well think of it this way, what inside the transmission controls shift points, shift feel, quality, timing etc? It's the valve body. What directs fluid throughout the transmission? The valve body. You need to make sure that, the valve body it torqued down properly, the separator plate is correct for the car, and those little metal balls are where they are supposed to be.

Well it could possibly just not be torqued right..I went over it and checked to see if it was the right separator plate and it is,and the check balls are in the right places as well. I guess I'll just have to get a torque wrench and torque it exactly what it is meant to be and see from there if it fixes it or not. I know nothing major is wrong, because the fluid is still a perfect pinkish color.