Torque converter doesn't stay locked - Page 2 - CorvetteForum - Chevrolet Corvette Forum Discussion

Notices
C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Torque converter doesn't stay locked

Old 12-16-2017, 07:39 PM
  #21  
Bwbob
CF Senior Member
 
Member Since: Oct 2015
Location: Osceola WI
Posts: 131
Thanked 6 Times in 6 Posts
Default

3000 is the stall speed. Thats not related to the lock up.
Bwbob is offline  
Old 12-17-2017, 09:30 PM
  #22  
1993C4LT1
CF Senior Member
Thread Starter
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 14,075
Thanked 332 Times in 292 Posts
Default

So I got my scanner working. It didn't want to work on LG G5, for some reason. But would work on various other android devices.

Got some logs this morning. It was weird tho. It did read "TCC Locked" at 47mph and above. But it read that ever since. Even at a stop, it would say locked. Trust me, that is not correct.
1993C4LT1 is online now  
Old 12-17-2017, 10:56 PM
  #23  
AJT84
CF Senior Member
 
AJT84's Avatar
 
Member Since: Mar 2016
Location: Bowling Green Ohio
Posts: 100
Thanked 9 Times in 9 Posts
Default

Pics are from a 92 FSM. Maybe these can help





AJT84 is offline  
The Following User Says Thank You to AJT84 For This Useful Post:
1993C4LT1 (12-17-2017)
Old 12-17-2017, 11:23 PM
  #24  
1993C4LT1
CF Senior Member
Thread Starter
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 14,075
Thanked 332 Times in 292 Posts
Default

Opening my FSM would have been the last diagnostic procedure for me, had I not been able to do any logs. Will try one more time with a log. If not, then I'll go by the FSM. Thanks tho
1993C4LT1 is online now  
Old 12-20-2017, 09:33 PM
  #25  
pcolt94
CF Senior Member
 
pcolt94's Avatar
 
Member Since: Jan 2006
Location: Orlando FL
Posts: 5,302
Thanks: 0
Thanked 115 Times in 99 Posts
Default

Originally Posted by 1993C4LT1 View Post
So I got my scanner working. It didn't want to work on LG G5, for some reason. But would work on various other android devices.

Got some logs this morning. It was weird tho. It did read "TCC Locked" at 47mph and above. But it read that ever since. Even at a stop, it would say locked. Trust me, that is not correct.
I would say try to get a Tech1 or 2 and try to get a reading on the switch. A corvette shop would probably have the scanners and knowledge necessary

I knew my problem was the switch was right on the edge of making contact. Could be caused by wear on the switch contacts or booster changes and the adjustment is a nats a** off. Regardless I dropped the knee kick plate for a better look. I was going to put a piece of tape on the switch contact point but instead I thought I would try to adjust the switch assemble 1 click. I was afraid of something was going to break but it worked OK. So now it's a more solid contact. Along with the fix the brake light probably go off a bit later due to more pedal movement is necessary but it seems still to be in an acceptable range.

Last edited by pcolt94; 12-21-2017 at 10:26 AM.
pcolt94 is offline  
The Following User Says Thank You to pcolt94 For This Useful Post:
1993C4LT1 (12-20-2017)
Old 12-20-2017, 11:05 PM
  #26  
1993C4LT1
CF Senior Member
Thread Starter
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 14,075
Thanked 332 Times in 292 Posts
Default

Thank you sir. Been to busy this week to work on it, but believe me, I will figure it out.
1993C4LT1 is online now  
Old 01-12-2018, 05:18 PM
  #27  
1993C4LT1
CF Senior Member
Thread Starter
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 14,075
Thanked 332 Times in 292 Posts
Default

For step one on the flow chart, do I just point inside of Terminal F with the test light probe? And for ground, can I use the Negative battery post?

Step 1 NO: says to disconnect TCC electrical connector. Meaning I have to drop the pan, right?
Then it says, connect test light between terminal A&D. Terminal A&D on what, the ALDL, or on the solenoid? How do you connect "between" A&D?

Last edited by 1993C4LT1; 01-12-2018 at 05:23 PM.
1993C4LT1 is online now  
Old 01-12-2018, 06:43 PM
  #28  
1993C4LT1
CF Senior Member
Thread Starter
 
1993C4LT1's Avatar
 
Member Since: Oct 2011
Location: Dallas Texas
Posts: 14,075
Thanked 332 Times in 292 Posts
Default

Just finished reading the other 3 TCC diagnostic pages. Pretty easy, it just checks the 2nd, 3rd and 4th gear switches.
1993C4LT1 is online now  


Thread Tools
Search this Thread
Quick Reply: Torque converter doesn't stay locked


Sponsored Ads
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: