TCC Lockup While Coasting

[N0DIH]

I'll mess with it and see what my LT1 does on it. I can set mine easily to stay locked on decel.

I'll let you know what issues I see.

[N0DIH]

It is not cool to do... Drove it for 60 miles today (100 or so KM). It is ok on initial decel, but under a light resume to cruise or accelerate it has a rough bump and the dampers in the TC are taking a lot of loading. A heavier throttle apply unlocks the TCC quickly and this is ok.

And if you have DFCO setup, it can interfere in say 40-55 mph (65-90 km/h) at light throttle cruise where DFCO is kicking in and the car starts to decel and then throttle is applied when power is needed and the engage/decel gets rough. Not cool at least on my 5000lb/2200+ kg land yacht. I have 3.42's and 28in tall tires.

I don't recommend at all. I would bet TCC life would be greatly shortened.

IF you do not use DFCO, this is quite possibly tolerable, but I still think TCC life would suffer, I don't think the loads on it shifting from negative to positive are good at all.

[oztracktuning]

You need to tweak it and your DFCO timing tables to get it smoother .....it can be done.

[N0DIH]

I don't have much in the DFCO settings like the LS1. Mine are often simpler, but less options to choose from. So I can't vary much more than I already posted the screenshot (again, this is from the Corvette, but very very similar to my current settings)

I have set mine to 750 rpm disable, 950 rpm enable, and a 1.2 sec delay. Enable MAP at 26 kPa, disable MAP at 34 kPA. The only timing setting I have is ignition timing. I can set exit blending too, that is about it.

[Cablebandit]

i think its set to not stay locked on decel to let the revs fall down and save on gas.