Help! 91 auto TV cable
Thread Starter
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
Help! 91 auto TV cable
Did a tune up all electrical stuff plugs wires etc. and seem to have lost transmission kickdown. Looked at the TV cable for the reset tab as shown is FSM there is none that I can see and the metal gizmo never moves what gives? Never touched the thing at all. Did it just magically fail or am I missing something here? If I drve it easy will I do any damage until I figure it out or the dealer does? Highways and some in town nothing rough about an hour each way..
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
Did a tune up all electrical stuff plugs wires etc. and seem to have lost transmission kickdown. Looked at the TV cable for the reset tab as shown is FSM there is none that I can see and the metal gizmo never moves what gives? Never touched the thing at all. Did it just magically fail or am I missing something here? If I drve it easy will I do any damage until I figure it out or the dealer does? Highways and some in town nothing rough about an hour each way..
Thread Starter
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
The aduster has to be there unless someone has changed something before you. It should be on the same side as the throttle cable. There is a bracket that holds the adjuster, throttle, and cruise control cables. The one on the bottom is the TV cable. Is the cable still connected to the throttle body linkage?
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
The only thing on a 700R4, which is what you should have, that is electrically operated is the torque convertor lock up. It has nothing to do with the shifting. Does it shift at normal speeds? With light throttle it should shift around 10 from 1st to 2nd, and on up there from there at around 15 mph additions thru the rest of the gears. The lock up comes in around 42 mph, after the engine has reached operating temp. If it is shifting at the right speeds then I would suspect somthing is wrong in the tranny. If the TV cable is out of adjustment it changes the shift points. It effects line pressure in the tranny, and if out of adjustment can damage the tranny. I don't have a camera right now. Does someone have a camera that they can take a picture of their cables so ddah can see the adjuster?
Thread Starter
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
I sure it is not the T word as my wallet can not stand it and will mean extended parking..sigh.. I did nothing to it.. As far as i know it has been like this ever since I got it possibly was going too fast to have it downshift. The car seems to shift normally in all respects I hope I am just being paranoid here. Everytime I fix one thing I find another and is starting to make me crazy.. What speeds are normal for a downshift? I did notice after the tuneup that the car is much smoother and possibly what I am missing is the hashness I had before. It idled faster and clunked going into gear now a little tug still firm but not harsh. I will give it a try at slowers speeds later. Now the car seems to get up to 60 or so with very litttle throttle movement so maybe too fast to drop down a gear. Is the cable 2 piece in that one cable pulls the slider and the slider pulls the TV valve?
Thread Starter
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
Could PO put a different year cable on that adjusts differently? Ecklers lists the cable as 89-91 is the only reason I ask and it has a very suspicious looking hole on the side of the rear section of the cable..
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
I sure it is not the T word as my wallet can not stand it and will mean extended parking..sigh.. I did nothing to it.. As far as i know it has been like this ever since I got it possibly was going too fast to have it downshift. The car seems to shift normally in all respects I hope I am just being paranoid here. Everytime I fix one thing I find another and is starting to make me crazy.. What speeds are normal for a downshift? I did notice after the tuneup that the car is much smoother and possibly what I am missing is the hashness I had before. It idled faster and clunked going into gear now a little tug still firm but not harsh. I will give it a try at slowers speeds later. Now the car seems to get up to 60 or so with very litttle throttle movement so maybe too fast to drop down a gear. Is the cable 2 piece in that one cable pulls the slider and the slider pulls the TV valve?
I don't know if the cable is two piece or not, never had one apart. But you should have an adjuster located were the cable attaches to the throttle body bracket that hold all the cables. Mine looks like a rectangular box with a square button on the side. The button is flush with the end of the adjuster.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Race Director
Joined: Feb 2004
Posts: 12,517
Likes: 19
With the engine warm and idling, disconnect the plastic connector at the throttle body. Gently work it in and out. You are trying to feel the valve work. If it feels jerky or sticky, the valve body will need to come out for cleaning. If it feels smooth, shut off engine, readjust cable as recommended in the shop manual. If this doesn't fix it, you have troubles.
Thread Starter
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
That is exactly what mine looks like. The factory manual makes mention of the sleeve part coming out with the cable once adjusted mine does not do that. Am I missunderstanding something here. What does yours look like with the throttle at wide open? Did take the car on the trip yesterday and after about 1/2 hour drive time felt like it's old self again though much smoother with the igniton tuneup. It took much smaller throttle movement to get the same results in the car felt very eager to go fast as opposed to getting going but not happy about it if that makes any sense. Zero delay between new throttle position and new speed..I like that..LOL.. I did end up orderding a new cable from GM and the price of an oem part with air shipping is less money than the price of a repo cable from a well known corvette specialy parts place without shipping..
Thread Starter
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
So the ferrule looking part on the throttle side does no come out of the housing only the cable changes length? If that is the case mineis no doubt ok as the car seemes to drive fine again. Disconnecting the battery seems to screw eveything up for abou ahalf an hour..LOL
