Truck tunes are way different but you still shouldnt do it with the 4 speed autos. They even changed it to a tow button in latter models and all that did was stop the TC from slipping.
Torque Converter Lock Up
- Thread starter Ed Hall
- Start date
Sapperfire
Dedicated LVC Member
So the moral of the story is...
If
you
tow
with
a
mark viii,
you're a bad person, and you'll probably go to hades
If
you
tow
with
a
mark viii,
you're a bad person, and you'll probably go to hades
Chris_Murder
Well-Known LVC Member
Because you fail to grasp the concept that they were never meant to tow what your intending. Just as they were never meant to have slime in the air suspension. Leave the transmission in your car alone.... or better yet do what your intending so that it blows up and you can't afford to repair it and it winds up in a better home.
No, that was not the reason.
Steady State Slip was programmed in for "Misfire Diagnosis". If you have a M/T, your clutch has "dampner springs" between the input shaft of the trans, and the clutch itself. These springs absorb the radial vibrations of the trans and driveline (or engine) from the other component (engine/drivelne). With a lock-up TC clutch, ther are NO dampener springs. In fact, the connection from the tires all the way to the crank is 100% solid. ANY vibrations in the drive line will be transmitted directly to the engine via the crankshaft. Misfire detection is based on the waveform of either the crank (most cases) or cam sensors. So, any external vibrations transmitted to the crank can show as a misfire. Solution: allow *some* slippage of the TCC to "absorb" those small vibrations.
You are an idiot. The steady state slip is for a smoother more comfertable drivetrain in a LUXURY car. And when a TC is fully locked its still not really fully locked as if the crank was directly connected to the input shaft of the trans.
As for misfire the cars computer reads the resistance of the coil and combines that with load and crank/cam sensor position to determine if it had a misfire.
As for misfire the cars computer reads the resistance of the coil and combines that with load and crank/cam sensor position to determine if it had a misfire.
Chris_Murder
Well-Known LVC Member
Courtesy of dirtydogperformance (not the preferred vendor over here) but anyway http://forums.tccoa.com/showpost.php?p=410453&postcount=25
http://forums.tccoa.com/showthread.php?t=47149
Tc's do have damper springs.
http://forums.tccoa.com/showthread.php?t=47149
Tc's do have damper springs.
keatonsdad
Dedicated LVC Member
If what you say is to be believed by the rest of the population here than it is just one more reason to NOT LOCK UP YOUR CONVERTER OR USE A MARK VIII TO TOW WITH. But that said your still an idiot. I suggest using sand in your oil and wet mix concrete in your trans pan I promise it won't do any more damage than what your already planning on doing.