I had my 700r4 rebuilt by a company is supposed to know what they are doing. I am not going to mention their name at this point but lets just say the provide group purchases on this forum from time to time. So here are the issues that I can use some help with. Mainly because it is looking like I might need to take it somewhere else to make it right. I have been waiting for a month for the return call by the company. I think I am on my own once again.

The trans has a Transgo shift-kit, Redline clutches and steel, 0.50 boost valve and a couple of other things that I cant remember at this time. The shift from 1st to 2nd is real hard which is ok. I have to be careful because if I leave a stop light in a spirited manner (nothing too agressive) there is always a chirp on the 1-2 shift.

1 - At WOT when I manually shift there is a significant delay after I shift from 2nd to 3rd - eg 1/4 mile run. I would like to know what is most likely causing this.

2 - If I am on the freeway traveling at freeway speeds and I need to romp on it the trans will not downshift from 4th to 3rd. I need to manually kick it into third.

I think both issues are related but I need some ideas on where to start to troubleshoot where the real problem is. I don't changing what can but I personally will not rip into the trans myself. Any guidance is greatly appreciated.

 

Sounds like a tv problem. Readjust it(the cable) and see if it improves. Put a guage on it. Check idle tv pressure and wot tv pressure as per the shop manual. Guage will tell the tale.

 

TV Cable... TV: Throttle Valve... A valve inside the transmission that controls the pump pressure and the shift down of the transmission.

First thing to do is make sure the 'TV' cable is adjusted properly.
Loosen it up by pressing the little release on the retainer and shove the cable to the rear.
Get in the car and press the accelerator all the way to the floor.
This will automatically adjust the cable to the correct position.

Unofficially:
While it's not usually necessary and you have to be careful not to move the TV cable from it's proper position very much, you can modify the way the transimission shifts (a small amount) my moving the TV cable about 1/4" forward or backward. Forward increases the pump pressure and will cause harder shifts at a little faster speed and moving the cable to the rear does the opposite.

The TV cable sets the 'operating point' for the hydraulic pressures of the transmission. It is a dynamic pressure adjustment and it controls the shift down of the transmission.
This is on a 700R4.
The newer tranmissions are ECM controlled.

Try the TV cable (Throttle Valve) adjustment first.......

 

Pete K,

I was typing while you were posting, LOL.

 

I will try adjusting the TV cable. I was also told that the directions of the transgo shift kit states that I will need to manually kick it down from 4th to 3rd which to me seems odd. But what the heck to I know....

 

I called Transgo about the TV cable, and what pressure the 700R4 should be at with there shift kit. They said 15-18ft/lbs more. The factory manual has 65-85 depending on model of 700R4 (this is in my service manual)
They said disconnect the TV cable, and ensure your throttle body goes to WOT. Then pop the TV cable to let it slide freely. Then reconnect the TV cable and floor it, then pull the TV cable as far back, towards windshield as you can, and this should be set properly. Does this sound right, before I get a guage ?
Heres there number 626-443-7451

 

Hey, You say shove it to the rear, the TV cable? What if you have a 93 type with ASR, do you go the other way, towards the radiator, or towards the windshield? Thanks