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Thread: TCC releasing at crusing speeds with light throttle

  1. #1
    Lifetime Member HellKnightHicks's Avatar
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    Default TCC releasing at crusing speeds with light throttle

    So ill be driving along and the TCC will unlock doing 50 miles per hour.. When the throttle is lightly pressed it will stall up.


    Any ideas as to why...?

    I think my tables are all in line with they should be. I've even adjusted a little to try to keep it locked...

    Wondering if there is something wrong with the clutch in the TC... But it will re-egauge if you let way off the thorttle.

    Thanks in advance for any help you provide.

    Smoothed VE_0005 - Trans Changes TCC.tun
    NEW Shocks.efi

  2. #2
    Joe (Moderator) joecar's Avatar
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    Log a few more pids:
    TSTATE09
    TSTATE10
    GEAR
    TCCMODE
    TCCDC
    TCCSLIP
    TIS
    TOS

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    Default

    x 2

  4. #4
    Lifetime Member HellKnightHicks's Avatar
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    Default

    roger roger

    Ill do that this afternoon.

  5. #5
    Lifetime Member HellKnightHicks's Avatar
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    I increased the pressures as per some of the discussions ive read that you both posted on. The TCC was locking and holding like it was supposed to after flashing the tune tonight.

    Ill log and post on the way to work in the morning.

    It still needs some tuning and i need some guidance.

    Hopefully this really has fixed the issue. Ill post up after the drive in the morning.

    Thanks fellas.

  6. #6
    Lifetime Member HellKnightHicks's Avatar
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    Well i guess none of that stuff helped...
    Once I'm up in 4th with TCC lockup and it has to come out it just wont hold it after that.

    It will appear to go into lock but then starts stalling at any force increase on the engine.

    check this log about 20 min in.

    Im pretty sure i still have an exhaust leak somewhere after the header I believe.

  7. #7

  8. #8
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    Are you getting a P0300 DTC from time to time ?

    Often misfires will disable the TC lockup. Yours is set to the OEM "2 Trips". After the reflash (which would clear the DTCs) it would take two trips for the DTC to set again - which would inhibit TC lockup.

    Can you add misfire count (can't recall the exact PID) to the logged PIDs and get one more log.

  9. #9
    Joe (Moderator) joecar's Avatar
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    Looks to me like TP rate exceeds threshold for unlocking TCC.


    Click image for larger version. 

Name:	TCC unlock.png 
Views:	332 
Size:	165.2 KB 
ID:	15953Click image for larger version. 

Name:	TCC lock state.png 
Views:	335 
Size:	91.6 KB 
ID:	15954

  10. #10
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    Thanks Joecar ... overlooked the state misfire off PID ... had just scanned for the misfire count PID.

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