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Another TCC Locking question

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Old Mar 1, 2008 | 10:15 PM
  #11  
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Originally Posted by trever1t
Third is about 86mph...I'll have to check the log again but I go into third solid long before the TCC is locking.
Let me guess, it's about 1 second exactly from the time you go into third until the TCC locks, right?
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Old Mar 1, 2008 | 10:29 PM
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Originally Posted by dc_justin
Let me guess, it's about 1 second exactly from the time you go into third until the TCC locks, right?
Looks like 2 seconds, take a look at the scan in the first post, looks like third is solid at 11:48:870 and lock starts to apply at 11:50:130 and is locked at 11:50:845.... What do you think Justin?
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Old Mar 1, 2008 | 11:16 PM
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Originally Posted by truckmann
I have my TCC Duty Cycle tables set to 100 max and 90 min as per recommendations on the HPT forum for an aftermarket stall converter.
That's what mine is set to as well across the board. It prevents the partial lock-up. Of course, I have mine setup to not lock at all in 3rd or 2nd.
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Old Mar 1, 2008 | 11:37 PM
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I'll give that a try. Mine is set to only lock in 3rd at 93/100% tps as shown in the screenshot.

Last edited by trever1t; Mar 1, 2008 at 11:47 PM.
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Old Mar 2, 2008 | 12:56 AM
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Originally Posted by trever1t
I'll give that a try. Mine is set to only lock in 3rd at 93/100% tps as shown in the screenshot.
Seems fairly logical for it to be taking an extra 2 seconds if the lock up is set to 93 and you hit third at 86 mang.
Just lower your lockup point to 86/87 and see what she do.
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Old Mar 2, 2008 | 08:21 AM
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Trevor1t already has it set to lock up at 80 mph at 93% and 100% TPS. You might try to raise it to 86 mph/87 mph, just after the shift, to see if it makes a difference?

Under General - Shift Lock you have it set to Engaged. I think that refers to your TCC staying locked during a shift and that is supposed to be very hard on the input shaft. I would set it to Disengaged just so you know it will not stay locked during a shift.
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Old Mar 2, 2008 | 09:13 AM
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Originally Posted by Mort
Trevor1t already has it set to lock up at 80 mph at 93% and 100% TPS. You might try to raise it to 86 mph/87 mph, just after the shift, to see if it makes a difference?

Under General - Shift Lock you have it set to Engaged. I think that refers to your TCC staying locked during a shift and that is supposed to be very hard on the input shaft. I would set it to Disengaged just so you know it will not stay locked during a shift.
That is correct Mort. I have raised the TCC lock to 90mph to see if it makes a difference. The Shift lock is engaged but it shouldn't make any difference if lock is not commanded in 2nd and no way I will be WOT in 4th. right?
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Old Mar 2, 2008 | 11:12 AM
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Originally Posted by trever1t
and no way I will be WOT in 4th. right?
Not through a 1/4 mile would be my guess.
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Old Mar 2, 2008 | 12:44 PM
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What about the TCC release TPS?
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Old Mar 2, 2008 | 07:55 PM
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I tried a few new settings as shown in this screenshot..


and include a log.


Questions...

What about the TCC release table?
What is the slip rpm tolerance? What is normal and what is not?
Why am I getting KR at partial throttle in this scan but not WOT?
are you sick of my questions yet?
Attached Files
File Type: hpl
just drive 0302 2.hpl (180.7 KB, 75 views)
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