Converter Lock/unlock - what???
09-30-2013, 10:34 PM
#1
Drifting
Thread Starter
Converter Lock/unlock - what???
98 'A4
I have a decent size cam (228/232 .571/.573 112) and a decent stall (Yank SS3600). When in 4th, my converter will lock/unlock when RPM < 2300. My understanding is that this is because the computer is interpreting the cam/stall as a misfire. I should note that the converter rarely unlocks unexpectedly when in 3rd.
As per many threads I maxed out the misfire tables (HPTuners):
Engine Diagnostics->Misfire
a)Revolution Mode
1)Low RPM
2)Medium RPM
3)High RPM
b) Cylinder Mode
1)Medium RPM
After I did that my converter failed to lock at all! It wouldn't lock in 3rd or 4th no matter what. I replaced the stock values and it went back to locking up.
What's going on? I've read at least 10 threads that talked about maxing out these tables to stop the computer from unlocking the converter because of a "misfire".
What am I doing wrong? Why would maxing these table result in a converter that never locks?
I have a decent size cam (228/232 .571/.573 112) and a decent stall (Yank SS3600). When in 4th, my converter will lock/unlock when RPM < 2300. My understanding is that this is because the computer is interpreting the cam/stall as a misfire. I should note that the converter rarely unlocks unexpectedly when in 3rd.
As per many threads I maxed out the misfire tables (HPTuners):
Engine Diagnostics->Misfire
a)Revolution Mode
1)Low RPM
2)Medium RPM
3)High RPM
b) Cylinder Mode
1)Medium RPM
After I did that my converter failed to lock at all! It wouldn't lock in 3rd or 4th no matter what. I replaced the stock values and it went back to locking up.
What's going on? I've read at least 10 threads that talked about maxing out these tables to stop the computer from unlocking the converter because of a "misfire".
What am I doing wrong? Why would maxing these table result in a converter that never locks?
Last edited by reactor2; 09-30-2013 at 10:40 PM.
10-01-2013, 12:06 AM
#2
Safety Car
98 'A4
I have a decent size cam (228/232 .571/.573 112) and a decent stall (Yank SS3600). When in 4th, my converter will lock/unlock when RPM < 2300. My understanding is that this is because the computer is interpreting the cam/stall as a misfire. I should note that the converter rarely unlocks unexpectedly when in 3rd.
As per many threads I maxed out the misfire tables (HPTuners):
Engine Diagnostics->Misfire
a)Revolution Mode
1)Low RPM
2)Medium RPM
3)High RPM
b) Cylinder Mode
1)Medium RPM
After I did that my converter failed to lock at all! It wouldn't lock in 3rd or 4th no matter what. I replaced the stock values and it went back to locking up.
What's going on? I've read at least 10 threads that talked about maxing out these tables to stop the computer from unlocking the converter because of a "misfire".
What am I doing wrong? Why would maxing these table result in a converter that never locks?
I have a decent size cam (228/232 .571/.573 112) and a decent stall (Yank SS3600). When in 4th, my converter will lock/unlock when RPM < 2300. My understanding is that this is because the computer is interpreting the cam/stall as a misfire. I should note that the converter rarely unlocks unexpectedly when in 3rd.
As per many threads I maxed out the misfire tables (HPTuners):
Engine Diagnostics->Misfire
a)Revolution Mode
1)Low RPM
2)Medium RPM
3)High RPM
b) Cylinder Mode
1)Medium RPM
After I did that my converter failed to lock at all! It wouldn't lock in 3rd or 4th no matter what. I replaced the stock values and it went back to locking up.
What's going on? I've read at least 10 threads that talked about maxing out these tables to stop the computer from unlocking the converter because of a "misfire".
What am I doing wrong? Why would maxing these table result in a converter that never locks?
Max ECT to 0
Min ECT to 284
Never an issue since.
Ron
10-01-2013, 12:34 AM
#3
Drifting
Thread Starter
10-04-2013, 08:52 AM
#7
Former Vendor
Member Since: Oct 2006
Location: Auburn/Dacula/Lawrenceville Georgia
Posts: 278
Likes: 0
Received 16 Likes
on
16 Posts
What really needs to be done is raising your lock speeds, and disabling converter lock in 1st-3rd gear. There's absolutely no reason for the converter to lock in 3rd as that's usually a gear you're in while crusing in town. Overdrive is the only necessary gear for converter locking.
From a driving experience standpoint, it is absolutely amazing how "snappy" and responsive the car can become tuning the transmission properly. It will also do wonders for driveability if the transmission isn't locking at silly low rpm's and/or silly low mph speeds.
From a driving experience standpoint, it is absolutely amazing how "snappy" and responsive the car can become tuning the transmission properly. It will also do wonders for driveability if the transmission isn't locking at silly low rpm's and/or silly low mph speeds.
Last edited by Josh@SpartanLSX; 10-04-2013 at 08:56 AM.
10-08-2013, 10:17 PM
#8
Melting Slicks
What really needs to be done is raising your lock speeds, and disabling converter lock in 1st-3rd gear. There's absolutely no reason for the converter to lock in 3rd as that's usually a gear you're in while crusing in town. Overdrive is the only necessary gear for converter locking.
From a driving experience standpoint, it is absolutely amazing how "snappy" and responsive the car can become tuning the transmission properly. It will also do wonders for driveability if the transmission isn't locking at silly low rpm's and/or silly low mph speeds.
From a driving experience standpoint, it is absolutely amazing how "snappy" and responsive the car can become tuning the transmission properly. It will also do wonders for driveability if the transmission isn't locking at silly low rpm's and/or silly low mph speeds.
10-15-2013, 11:40 PM
#9
Former Vendor
Member Since: Oct 2006
Location: Auburn/Dacula/Lawrenceville Georgia
Posts: 278
Likes: 0
Received 16 Likes
on
16 Posts
Yes, this can all be done in the tune. Find a tuner that is savvy with PROPERLY tuning the 4L6x transmissions. A good trans tune can make the car feel totally different (in a good way) and a bad one can make the car a dog too.