Here it goes. Got the tranny in the car. Bought a new TV cable, a Holley TV cable and throttle cable bracket, and the geometry correction bracket. I adjusted the cable per the GM instructions and it seemed to work perfectly. I drove the car and it shifted WAAAY to early and WAAY to soft. (Has a trans-go kit in it with every option set to hardest shift) I developed a leak in the pan and decided to drop it an replace the gasket. While I was there I took a look at the TV plunger and tested it to see what it did at full throttle. When the pedal is fully compressed the TV plunger still has about 1/4 of an inch to go before it's fully seated in the valve body. This is a problem, right? How would I go about correcting this if it is alreday adjusted per the GM setting? If I put the cable housing farther back in the D-shaped holder I can get the TV plunger to fully seat when at WOT but then the cable clicks back out to the "correct" setting. It won't stay in a position that allows the plunger to go all the way in. What do I do now?

 

have you verified that the throttle cable pulling the throttle all the way open at WOT?

may need an extra set of hands.

 

Yeah, did it by moving the throttle manually with my hands and then had my buddy sit in the car and push the pedal to the floor. same travel both ways. Is that plunger not going 100% in a problem?

 

Yes. That prevents the transmission from accurately responding to driver input.

The "correct" setting is when the plunger is fully seated when the throttle is wide open. If it doesn't hold that setting, but instead self-adjusts to some other setting, then that other setting is not "correct".

http://www.tvmadeez.com/

One way or another, you need to make the cable housing stay in the position that it's in when the throttle is able to fully depress the TV plunger. Could be that the cable you have is no good; just being "new" doesn't guarantee that it's working right. In fact it sounds like it pretty definitely has issues.

 

I read that 7/8 of full travel for the plunger was enough to fully activate any purpose it was serving.