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700R4 TV Cable Adjustment/Importance

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Old 01-06-2011, 10:03 AM
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700R4 TV Cable Adjustment/Importance

I thought that i would share some information that may help some people better understand the importance of the TV Cable on 700r4 and 200r4 transmissions.

First off DO NOT drive without your tv cable hooked up or without it properly adjusted. You will ruin your tranny.

A common misconception is that the TV Cable is used to ONLY control downshifting (This is what I thought). This is extremly wrong!

The TV cable controls Part Throttle Downshifting, Detent Downshifts, Line Pressure, and Shift Points.

If your transmission has soft shifts or is stacking shifts (not spread out) then your problem could very well be a loosely adjusted cable.

These following Instructions are directly off of the TCI website! The link is at the bottom of the page where they can be easily printed off.
I highly recommend doing that and putting them in a clear protecive sleeve and keeping them in a binder in case you ever need them again along with any other information/instructions that you may run across. (helpful hint)

Last edited by 92z28camarokid; 01-06-2011 at 10:18 AM.
Old 01-06-2011, 10:14 AM
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Transmission: Nv4500, 700R4 (for now)
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Re: 700R4 TV Cable Adjustment/Importance

Figure 2 demonstrates the correct geometry for the TV Cable mounting position. Use the following procedure to determine if your ADJUSTER MOUNTING POINT is correct.
a. Push in the Adjust Tab and retract the Slider in the direction shown in Figure 3.
b. Without allowing the Slider to move, pull the cable until it stops and measure from the mounting bracket to the cable end. Add 3/16" to this measurement and that will determine the ADJUSTER MOUNTING POINT distance at full throttle (WOT).

c. Also note in Figure 2 that the distance from the throttle shaft to the cable end is referenced. This distance must be between 1 7/64" and 1 1/8"! The cable end mounting point should follow a 78° arc between closed throttle and WOT in order to achieve the proper amount of pull on the cable.

Adjustment of the TV Cable on a gasoline engine.
a. Adjustments are made with the engine off. Locate the Adjust Tab on the cable housing. Press in the tab and push the slider as shown in Figure 3.
b. Release the tab and rotate the throttle lever to WOT and the cable will self adjust itself as evidenced by a few audible clicks. Release the throttle lever and check the cable for any signs of binding or sticking.
c. Road test the vehicle. Under moderate acceleration your shift points should be close to the following:
1-2…………………15-20 MPH
2-3…………………25-30 MPH
3-4…………………40-45 MPH

FIGURE 2
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Figure 3
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I hope this may help anyone with any confusion or problems that they may have had.
And here is the website where I got all my information:
http://www.tciauto.com/Products/Inst...ble_adjust.htm
Old 04-04-2011, 10:53 AM
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Transmission: Nv4500, 700R4 (for now)
Axle/Gears: stock
Re: 700R4 TV Cable Adjustment/Importance

Bumpin this up, there seems to be a lot of tranny trouble recently with the 700r4
Old 04-04-2011, 11:56 AM
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Re: 700R4 TV Cable Adjustment/Importance

This is good info also; http://www.tvmadeez.com/article/index.php
Old 04-20-2011, 06:09 AM
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Re: 700R4 TV Cable Adjustment/Importance

Could an improperly adjusted TV cable cause the trans to try and shift from OD to drive while cruising at about 50 mph?

Mine appears to have slack when the throttle is closed.

Last edited by 1991_RS; 04-20-2011 at 06:16 AM.
Old 10-05-2014, 05:05 AM
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Re: 700R4 TV Cable Adjustment/Importance

perfect for a sticky in transmission
took me 5 threads from the search to read, until I found a good explanation of how to measure mounting point and correct adjustment
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