--- 3 --- Whats this mean?
--- 3 --- Whats this mean? What does this mean in TCC mode? Im trying to see if im locking under wot?
It has
Off
Apply
Locked
Release
Off
and sometiems I get this --- 3 --- ?
It has
Off
Apply
Locked
Release
Off
and sometiems I get this --- 3 --- ?
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
not sure what ---3--- means, one easy way to see if the torque converter is trying to couple at WOT is to log the Converter slip Speed
When my trans was having problems last year... somehow fluid was going through the input shaft at WOT under high torque... so it was mechanically trying to lock
if you log it and it's really low 0-100 or maybe even 200 then it's probably trying to lock (which is something you don't want unless you have a converter designed to do this... otherwise you'll be seeing torque converter clutch material in the filter soon)
When my trans was having problems last year... somehow fluid was going through the input shaft at WOT under high torque... so it was mechanically trying to lock
if you log it and it's really low 0-100 or maybe even 200 then it's probably trying to lock (which is something you don't want unless you have a converter designed to do this... otherwise you'll be seeing torque converter clutch material in the filter soon)
I have a multidisc 3600. I want it to lock at the beginning of 2nd and stay locked throught 3rd is what vig told me. I thought I had it tuned to do it but under wot is says
off
off
-3-
-3-
I would assume if it was locked it would say locked however.. Maybe it means trying to lock or something.
Slip speed? I dont see that..
off
off
-3-
-3-
I would assume if it was locked it would say locked however.. Maybe it means trying to lock or something.
Slip speed? I dont see that..
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
Originally Posted by Tiger2o69
Is that slip rpm?
-3- could mean the 3rd option ... just not putting Locked in place?
but monitoring your slip RPM will tell you for sure
Every time I try to post part of the numbers it puts it in a long line. Is there a way to post them on here w/o doing that? ..
60-75 is where is starts showing the -3-'s and it seems to get to around 100-200 range for the rpm slip but then it says off for the shift then when the starts saying -3- again its about 800 rpms. I assume w/ that much slip im losing some mph. I have been doing pretty bad in roll racing since the converter so im trying to fix it.
At part throttle I can definetly feel a difference when it locks up. Should I be able to feel it during WOT?
Im going to play w/ a few settings and go run again.
Thanks
60-75 is where is starts showing the -3-'s and it seems to get to around 100-200 range for the rpm slip but then it says off for the shift then when the starts saying -3- again its about 800 rpms. I assume w/ that much slip im losing some mph. I have been doing pretty bad in roll racing since the converter so im trying to fix it.
At part throttle I can definetly feel a difference when it locks up. Should I be able to feel it during WOT?
Im going to play w/ a few settings and go run again.
Thanks
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That pretty much means the PCM is starting the process to lock up the TCC. Once it is LOCKED then the TCC is actually locked. The trans needs to build up the proper pressure to actually lock up the TCC, from my experience. What you can do is reduce the time it takes to lock it up by either increased line pressure or (IIRC) there is a variable for the time to lock up the TCC. You will not be able to lock the TCC during a shift, the F-body PCM (or the trans) was not designed to hold the TCC locked during shifts. GM Trucks have that ability becuase they are designed to tow, but now passenger cars. So locking the TCC in second won't do you any good if the trans needs to shift to third. You can lock it up manually, but I don't know how that works (if it will stay locked). Good luck!
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Originally Posted by Flame Throwing SS
That pretty much means the PCM is starting the process to lock up the TCC. Once it is LOCKED then the TCC is actually locked. The trans needs to build up the proper pressure to actually lock up the TCC, from my experience. What you can do is reduce the time it takes to lock it up by either increased line pressure or (IIRC) there is a variable for the time to lock up the TCC. You will not be able to lock the TCC during a shift, the F-body PCM (or the trans) was not designed to hold the TCC locked during shifts. GM Trucks have that ability becuase they are designed to tow, but now passenger cars. So locking the TCC in second won't do you any good if the trans needs to shift to third. You can lock it up manually, but I don't know how that works (if it will stay locked). Good luck!
Hmm I increased the max line pressure to 98 and it still didnt do anything. I have been playing around with it and its slipping more like 600-800rpm.
I did get it to lock at wot while pushing the vcm lock button. It seems to do it instantly then. Im not sure what im doing wrong, Ill post the excel sheet tonight.
thanks for the help.
I did get it to lock at wot while pushing the vcm lock button. It seems to do it instantly then. Im not sure what im doing wrong, Ill post the excel sheet tonight.
thanks for the help.