Red 01SS

iTrader: (2)

We have been after this for a long time now. It locks up where it is supposed to (45mph) but anytime after that if I let off the throttle the converter unlocks. As soon as I touch the throttle again it will lock back up.

Its a stock trans, deep pan, cooler, SS3600.

My tuner cant find anything in Tuner Catz, he has talked with their people and they are not sure of the problem. He also has HP Tuners and we cant find anything in there. Brake switches are good and I am not getting any codes.....

Any ideas??

performabuilt

iTrader: (25)

That is normal operation

Red 01SS

iTrader: (2)

Hmm, didnt do it before. You are telling me its normal to be cruising down the highway, let off the gas (not touch the brake) and the converter unlocks

It will only stay locked under load

ChocoTaco369

My old V6 Firebird did this. The second I took my foot off the gas, the converter would unlock. Then, if I touched the gas again, it would lock back up.

I don't notice this with my Formula. It seems to always feel locked. However, the stock V8 converters are a lot beefier than the stock V6 converters, so maybe I just don't notice the unlocking? Who knows.

performabuilt

iTrader: (25)

Yes unless tuned other wise the pcm should unlock the throttle under no load pedal release and resume on throttle apply , It should also release on heavy throttle tip in . Should only be on in part throttle crusing

silver-mod-o

iTrader: (15)

I have mine to lock past 55mph at less than 43% TPS input, at cruise it will lock up nicely and unlock when I come off the throttle. All the auto's we've tuned we've duplicated my trans settings and tweaked a bit. This is the me and my tuner have it works very well... we got the 43% value by logging some cruises and addind some % to that so if you are cruising and want to go around someone, the converter will unlock and put you back in the power rather than lugging the motor down low, then lock back up when you go to cruising again.

Red 01SS

iTrader: (2)

As soon as I touch the gas again, as if I were going to pass someone, it will lock back up. It will only put me "in the power" (by unlocking) untill I touch the throttle to pass. This does not help out with passing anyone at all...

Maybe I am off base here, just seems odd to me that it will lock and unlock 50 times on the highway in a matter of miles.

silver-mod-o

iTrader: (15)

you misunderstood what I'm saying...


Imagine you are cruising, 60mph, converter locked 2200 RPM, and come up on someone slower.... roll into the throttle (past your preset TPS input value) and it unlocks.... putting the RPM's back up in the range of power... making it easier to pass someone, without standing in the throttle. and once you get around them and resume your cruising situation, it locks again (under preset TPS value) and everything is back they way it was....

But to answer your original question, yes, once you let off the throttle completely it will unlock while coasting, get back in it, and it locks back up... just the way the PCM is written...

Do you understand my lockup settings now?? make more sense??

Red 01SS

iTrader: (2)

Ah gotcha, must have read it wrong, sorry. I suppose everything is well then....