Be very carefull when doing this!!!!! I fried my tranny after I thought it was done right. Tooks about 4 weeks and 3rd was gone completely.
TV Cable Adjustment
Here's How To Adjust The TV Cable
1. Remove air cleaner on vehicles with carb. or TBI.
2. Depress lock tab down on TV cable and push cable all the way Forward towards carb. or
injector.
3. Have someone sit in vehicle and depress gas pedal to the floor so it's at WOT (Wide Open Throttle). Hold it there for steps 4 and 5.
4. Now check to make sure the carb arm is bottomed out or has no more movement. If not, use a pair of Channel Locks to bend TV cable bracket until carb. or injector arm no longer rotates.
5. Next, depress lock tap down and pull TV cable back (Pull HARD!) towards firewall or away from carb or injector untill it stops and than release the tab.
6. Use a pocket knife or hacksaw blade to mark the cable in front of the snout. This is MAX TV.
7. After marking Max. TV depress lock tab and push cable forward toward carb. or injector 1/8'' of an inch. Make a mark in front of snout. This is Minimum TV.
8. Set cable back to Max. TV and Road Test.
Road Test
Important
First thing to check on road test is for Detent. Here's how- Make a very light throttle or minimum throttle 1-2 upshift. As soon as it shifts, floor the throttle. The transmission MUST shift back to 1st gear. If it doesn't you need nore T.V.
Note
Most Diesels and V8's will work best at Max. TV to 2 clicks away. 4 cyl and V6's will work best at 2 to 4 clicks away from Max.
Taken from
http://www.transonline.net
HTH