AOD with 4R70W Internals and a Shift Kit - 1 to 2 Shift Question

[Davjake128]

I have 1988 foxbody with a AOD with 4r70w internals and a shift kit but when I shift from 1 to drive I have to shift really early or it will hit the chip and I have to let off. Is that early shift normal or do I need to adjust my tv cable or something

 

[JD1964]

If you leave it in drive and let it shift on its own, does it do the same thing?

 

[Davjake128]

If you leave it in drive and let it shift on its own, does it do the same thing?

When I leave it in drive the 1-2 wot throttle shifts at like 4500 rpm kinda early

 

[AeroCoupe]

Reworked your thread title to get more folks in here.

 

[KRUISR]

Do you know what shift kit you have? TV cable adjustment will move your shift point. How is it set right now? To check disconnect the TV cable from the mount at the throttle body and see when the cable is sitting relaxed where the cable connection pin will sit relative the hole it connects to (approximate distance).

 

[JD1964]

I don’t think adjusting the TV cable will help it. Mainly because he says it shifts up at 4500 automatically if left in D. If a TV cable adjustment were in play, I would expect it to be acting up when shifting automatically as well.

Something is going on in the valve body. It probably won’t be easy to pinpoint unless you know exactly what work and what internal modifications were done. There’s many ways to tweak a valve body.

AOD experts are few and far between these days

 

[Davjake128]

Thanks!

Do you know what shift kit you have? TV cable adjustment will move your shift point. How is it set right now? To check disconnect the TV cable from the mount at the throttle body and see when the cable is sitting relaxed where the cable connection pin will sit relative the hole it connects to (approximate distance).

the shift kit is a Baumann shift kit

 

[Davjake128]

The guy who had it built said they had done some sort of epoxy mod to make it hold 2nd longer would that be in play for making first hold longer

 

[KRUISR]

I don’t think adjusting the TV cable will help it. Mainly because he says it shifts up at 4500 automatically if left in D. If a TV cable adjustment were in play, I would expect it to be acting up when shifting automatically as well.

When my car was an AOD I put a Lentech valve body in it - totally stock otherwise. I followed their procedure to set the TV cable adjustment. When I did that it would hold all gears pretty long. I then backed off the adjustment until the shifts were firm, but reasonable if I wasn't "in it hard". What I found the best set up was if the TV cable needed about a 1" pull to connect into the throttle body arm. If I remember right, the Lentech described procedure was more of a pull than that.

I had tried setting the TV cable at a direct "no pull" setting, but the shifts in auto were just too soon in all gears. The TV cable adjustment is VERY directly related to shift points. Now things like line pressures and other trans functions need to be right too, but TV cable (or TV rod on the earlier carb'd cars) is the key governor to shift points in an automatic mode.

One of the things I really liked about the Lentech valvebody was it changed the shift pattern from OD-D-2/1 to OD/D-2-1, so no more 1-2-1 shuffle if you were manually shifting the trans.

 

[Davjake128]

When my car was an AOD I put a Lentech valve body in it - totally stock otherwise. I followed their procedure to set the TV cable adjustment. When I did that it would hold all gears pretty long. I then backed off the adjustment until the shifts were firm, but reasonable if I wasn't "in it hard". What I found the best set up was if the TV cable needed about a 1" pull to connect into the throttle body arm. If I remember right, the Lentech described procedure was more of a pull than that.

I had tried setting the TV cable at a direct "no pull" setting, but the shifts in auto were just too soon in all gears. The TV cable adjustment is VERY directly related to shift points. Now things like line pressures and other trans functions need to be right too, but TV cable (or TV rod on the earlier carb'd cars) is the key governor to shift points in an automatic mode.

One of the things I really liked about the Lentech valvebody was it changed the shift pattern from OD-D-2/1 to OD/D-2-1, so no more 1-2-1 shuffle if you were manually shifting the trans.Thanks I will try adjust the tv cable and get it right

 

[Davjake128]

Thanks I will try adjusting it and see if that helps