no tcc lock up

[tune time]

Can some off you take a look at this file and see if you can see something im misssing. This is a ls-1 swap, I can lock the tcc up just fine useing the ecm controls and it works great it has a 9.5 inch FTI converter. But the ecm will not lock the converter on its own. I have a traced it down has a wire going to pin 33 on the blue ecm connector. I can watch the scanner and when I push the brake the scanner shows it working on and off. I can not find any other wires needed to the ecm but maybe I am missing somthing. And the speedo works fine and all the shifts are fine. If any one can see somthing in this file that is wrong please let me know thanks

[mikedegan78]

Could you post a log file? That will give a better picture.

[Ben Charles]

With a converter I would adjust the TCC minimum, most aftermarket converters don't have as good as a lock up clutch.

[tune time]

With a converter I would adjust the TCC minimum, most aftermarket converters don't have as good as a lock up clutch.

It has a 3 disc locking clutch its rated at 1000 hp to stay locked, I
Know during all of our dyno runs about 35 total runs it never sliped
But we always locked it useing the ecm controls on the lap top,
do's that lock it any differently then the ecm under normal driving.
Plus under normal driving the pids dont even show its trying to go
into lock up. I think there is another wire that im missing that needs to
go to the ecm, besides the one brake switch that I allready have hooked
up on pin 33 blue ecm. By the way what do the min tcc control and how
dos it decide between min and max. Thanks for the input Ben

[flame]

The only thing that sticks out to me is that all your MAP sensor codes are turned to no error reported. Why was this done? What is your map reading while cruising? I'm sure there is a load based tcc table that we don't have access to that may be not letting it lock up.

[jimmyblue]

Look at TCC_Mode PID in the table view of the scanner
(can't plot, non-numeric value in many modes). If you
see "--3--" the TCC is being held off by misfires, which
are always aggravated (the detection scheme, not the
reality) by a lightweight converter.