'93 Auto, shift problems.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 800
Likes: 2
'93 Auto, shift problems.
1993 LT1 4L60 (not e). under normal acceleration, it doesn't change out of first till 3500-4000 rpm's. and when it does shift, it's a very hard shift. I have read the car has a TV Cable but I can't find it for the life of me.
Why pictures of it? possible with the ASR cover off. How do I adjust the TV Cable, I know it's not like my '86.
Why pictures of it? possible with the ASR cover off. How do I adjust the TV Cable, I know it's not like my '86.
Racer
Joined: Sep 2004
Posts: 323
Likes: 1
From: Muncie Indiana
Hard Shift
The procedure to adjust the TV cable is very easy to do but you must do it exactly the way it is described in the FSM Pages 5E2-131 through 133. Unfortunatly I am unable to make copies of these pages for you to see perhaps someone else can provide copies so you can see just how to make this adjustment. From what you say about the way the car is shifting I would bet that this will make your transmission behave much better.
As for the location of the cables they are a part of the ASR if you take the cover off the ASR you will see three cables are attached to it one is the cruise one is the accelerator and one is the transmission. Do not attempt to adjust this without the correct instructions from the FSM.
As for the location of the cables they are a part of the ASR if you take the cover off the ASR you will see three cables are attached to it one is the cruise one is the accelerator and one is the transmission. Do not attempt to adjust this without the correct instructions from the FSM.
Last edited by John Robinson; Nov 7, 2008 at 05:11 AM.
Safety Car
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
John is correct, 92 & 93 cars are different from all others when it comes to TV cable adjustment, follow the instructions in the service manual or risk damage to the transmission due to low pressure.
You will need to remove the cover from the ASR servo, a 1/8" drill bit and an inch lb. torque wrench to adjust it properly.
The procedure starts at the bottom of page 5E2-131
You will need to remove the cover from the ASR servo, a 1/8" drill bit and an inch lb. torque wrench to adjust it properly.
The procedure starts at the bottom of page 5E2-131
Last edited by toptechx6; May 8, 2010 at 04:45 AM. Reason: pictures added
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
...and remember to put a little paint mark by the TV flip clip as a reference point.Even after doing the procedure I needed to tweak the cable a little tighter to get mine shifting like I wanted ~ 1/16 inch.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 800
Likes: 2
okay, today i adjusted the tv cable, now it shifts out of first around 2500 but it still shifts very hard, and when it does shift it jerks you forward. and one thing i didn't notice before is that in first the trans whines, is that normal? Don't know if the trans has a shift kit or not.
Drifting
Joined: Nov 2006
Posts: 1,894
Likes: 12
From: Fort Myers FL
Cruise-In X Veteran
I had the same problem and I had a bad cable and lost third and forth gear. You may want to have the transmission serviced sometimes the valve that lets the gear change gets junk it it. Get that cleaned out and put some fresh fluid in it and see what happens.
Racer
Joined: Sep 2004
Posts: 323
Likes: 1
From: Muncie Indiana
okay, today i adjusted the tv cable, now it shifts out of first around 2500 but it still shifts very hard, and when it does shift it jerks you forward. and one thing i didn't notice before is that in first the trans whines, is that normal? Don't know if the trans has a shift kit or not.
My guess is that like most of us you will have to make 2 or three tries at this adjustment before you get it right.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 800
Likes: 2
Did you use a torque wrench to tighten the cable pulleys on the ASR? and did you loosen all of the cables including the cruise? When you loosened the cable clamps did you pull the cable to release it from the clamp and pull it out so there was slack in the cable. Also did you re tighten all the clamps before you got in car and pushed the accelerator to the floor. I f you did go back over the procedure and leave the drill in place and while holding the torque wrench at 8 NM lock just the transmission TV cable. Then depress the accelerator and it will automatically set itself then remove the drill. Also make sure that you do not put the drill to far into the hole and bottom it out in the back that will not allow the wheels to rotate far enough for a proper adjustment and if you are not lucky it will brake the pot metal pulley. (don't ask how I know)
My guess is that like most of us you will have to make 2 or three tries at this adjustment before you get it right.
My guess is that like most of us you will have to make 2 or three tries at this adjustment before you get it right.
EDIT: More info, drove the car today, under about 1/2-3/4 throttle it shifts out of first with no jerk, just a nice firm shift, but under WOT or anything below 1/2 it jerks coming out of first. I don't think it's the TV cable anymore.
Last edited by eatmydst1234; Nov 12, 2008 at 03:44 PM. Reason: added more info
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Le Mans Master
Joined: Feb 1999
Posts: 9,914
Likes: 37
From: South Carolina
St. Jude Donor '03 & '05
Did everything it said in the manual. all cables were slacked, put the drill bit in and rotated the pulleys and torqued the tv cable. then released everything got in the car and pushed the accelerator pedal to the floor to finish off the adjustment to the throttle cables. everything went back as a loosened it.
EDIT: More info, drove the car today, under about 1/2-3/4 throttle it shifts out of first with no jerk, just a nice firm shift, but under WOT or anything below 1/2 it jerks coming out of first. I don't think it's the TV cable anymore.
EDIT: More info, drove the car today, under about 1/2-3/4 throttle it shifts out of first with no jerk, just a nice firm shift, but under WOT or anything below 1/2 it jerks coming out of first. I don't think it's the TV cable anymore.
Intermediate
Joined: Mar 2011
Posts: 32
Likes: 0
From: Lake Geneva Wisconsin
where do you get the torque wrench to do this procedure. I've looked online and can't seem to find the same one. if someone can send me a link or tell me where to get one that would be great. I'm trying to get this done today
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The purpose of the TV cable is to tell the transmission to increase its internal pressure when the throttle is opened. The more you open the throttle the higher the pressure. It's supposed to shift hard at WOT to prevent the clutches from slipping and burning up.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 800
Likes: 2
Since this was brought back up an update on this problem, the car has driven exactly the same for the past 5 years. I guess it just shifts hard, if it was going to break I think it would have by now. It has a very hard shift when cold, though only from 1st to 2nd. After trans fluid come up to temp it still shifts harder from 1st to 2nd than I would like but I guess it is fine. I still don't know if the car has a shift kit or not, I'm thinking it might. I do know that changing fluid and filter didn't change anything in quality of shift. The 2-3-4 is firm but not harsh, about what I would expect.
