Automatic transmission issue
Thread Starter
Heel & Toe
Joined: Oct 2014
Posts: 16
Likes: 0
Automatic transmission issue
I have a 96, LT1. When I bought it, three bearings had been spun on the crank. I knew it so I didn't pay a lot. The car has 57,000 miles on it and was in otherwise great condition. Well I finally got the motor done and back in and after a little break in period in the garage, it was time for a spin. 1st gear, 2nd gear, out of second, no 3rd! I revved it and let off and it shifted hard into 3rd. I didn''t want to do any damage to the tranny so I headed back to the garage. Anybody seen this before? What should I look for? The trans oil has been changed-- no difference. I did take it for one more spin and couldn't get it to shift into third without hitting 4000 rpm. I never did get it into 4th. I've tried manually shifting as well. Thanks in advance!
Melting Slicks
Joined: Mar 2002
Posts: 3,252
Likes: 6
From: The Colony Tx
If anyone else reads this and I am wrong PLEASE post correction. It has been years since I have done this.
Also, mine is L98 so it may be different.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
The TV cable is the "throttle valve" cable that runs from the throttle (throttle body) to the transmission. It is sometimes called the kick down cable where as you put your foot down (from a high gear) on the accelerator, the transmission will downshift.
I thought that if the cable was radically misadjusted, it may keep the transmission from up shifting
However the transmissions from 94 and up are electrically operated and on second thought it may not use the TV cable. So I hesitate to send you in a wrong direction. Need to rethink this.
I thought that if the cable was radically misadjusted, it may keep the transmission from up shifting
However the transmissions from 94 and up are electrically operated and on second thought it may not use the TV cable. So I hesitate to send you in a wrong direction. Need to rethink this.
Thread Starter
Heel & Toe
Joined: Oct 2014
Posts: 16
Likes: 0
The TV cable is the "throttle valve" cable that runs from the throttle (throttle body) to the transmission. It is sometimes called the kick down cable where as you put your foot down (from a high gear) on the accelerator, the transmission will downshift.
I thought that if the cable was radically misadjusted, it may keep the transmission from up shifting
However the transmissions from 94 and up are electrically operated and on second thought it may not use the TV cable. So I hesitate to send you in a wrong direction. Need to rethink this.
I thought that if the cable was radically misadjusted, it may keep the transmission from up shifting
However the transmissions from 94 and up are electrically operated and on second thought it may not use the TV cable. So I hesitate to send you in a wrong direction. Need to rethink this.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
I would check with a scanner to see if there are any OBD2 codes that come up for the transmission.
The PCM tells the transmission what to do. Since you just got the engine rebuilt, I would check all electrical connections to the transmission. If it does not get a signal to shift the solenoids, it probably will not shift. The PCM connections are part of the loop also.
Would be nice to know if the transmission was OK before the engine went out.
Problem can be electrical, to a stuck valve body or solenoid in the transmission. Lots of places to point at.
The PCM tells the transmission what to do. Since you just got the engine rebuilt, I would check all electrical connections to the transmission. If it does not get a signal to shift the solenoids, it probably will not shift. The PCM connections are part of the loop also.
Would be nice to know if the transmission was OK before the engine went out.
Problem can be electrical, to a stuck valve body or solenoid in the transmission. Lots of places to point at.
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Melting Slicks
Joined: Feb 2003
Posts: 2,677
Likes: 812
From: Saskatoon Sask.
The TV cable is the "throttle valve" cable that runs from the throttle (throttle body) to the transmission. It is sometimes called the kick down cable where as you put your foot down (from a high gear) on the accelerator, the transmission will downshift.
I thought that if the cable was radically misadjusted, it may keep the transmission from up shifting
However the transmissions from 94 and up are electrically operated and on second thought it may not use the TV cable. So I hesitate to send you in a wrong direction. Need to rethink this.
I thought that if the cable was radically misadjusted, it may keep the transmission from up shifting
However the transmissions from 94 and up are electrically operated and on second thought it may not use the TV cable. So I hesitate to send you in a wrong direction. Need to rethink this.
Thread Starter
Heel & Toe
Joined: Oct 2014
Posts: 16
Likes: 0
I would check with a scanner to see if there are any OBD2 codes that come up for the transmission.
The PCM tells the transmission what to do. Since you just got the engine rebuilt, I would check all electrical connections to the transmission. If it does not get a signal to shift the solenoids, it probably will not shift. The PCM connections are part of the loop also.
Would be nice to know if the transmission was OK before the engine went out.
Problem can be electrical, to a stuck valve body or solenoid in the transmission. Lots of places to point at.
The PCM tells the transmission what to do. Since you just got the engine rebuilt, I would check all electrical connections to the transmission. If it does not get a signal to shift the solenoids, it probably will not shift. The PCM connections are part of the loop also.
Would be nice to know if the transmission was OK before the engine went out.
Problem can be electrical, to a stuck valve body or solenoid in the transmission. Lots of places to point at.
I'm getting a code scanner. I'll keep you posted. Thanks again.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Getting something that has live data and ABS (and good product support with a phone #) would be a good choice. You will be able to use it on any OBD2 vehicle you might get in the future. You know how fast electronics move, like buying a computer, buy for tomorrow.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
As Someone may have mentioned , the ops transmission is a 4l60e which has no tv cable. The transmission's shifting is controlled. by the ECM. The transmission does have a limp home mode. Make sure the round connector plug in the passenger side is fully seated. It might have gotten yanked when the mote was removed.
Thread Starter
Heel & Toe
Joined: Oct 2014
Posts: 16
Likes: 0
As Someone may have mentioned , the ops transmission is a 4l60e which has no tv cable. The transmission's shifting is controlled. by the ECM. The transmission does have a limp home mode. Make sure the round connector plug in the passenger side is fully seated. It might have gotten yanked when the mote was removed.
Thread Starter
Heel & Toe
Joined: Oct 2014
Posts: 16
Likes: 0
Thread Starter
Heel & Toe
Joined: Oct 2014
Posts: 16
Likes: 0
It was a fella who's retired and does it as a hobby. $1500. He replaced friction, seals and installed rebuilt torque converter, flushed and new fluid. Oh and he R&R'd. Pretty good deal and I know my numbers still match.