D1007, D1008, D1009 - TPS TCC release

[turboberserker]

I don't want to release my TCC at WOT but the max value in these tables is 100. Is there anything I can do to disable this release? Does it actually release if the release speed is not met?? -- I don't think it does, which leads me to question why this table exists.

[joecar]

You're right, the max value seems to be 100% TPS.

I think tables D1007-8 will force TCC release regardless of tables D1001-6.

The reason for wanting to release the TCC at WOT is because it is basically "half a clutch" (only 1 friction surface instead of 2) and it can't handle a large amount of torque (it'll slip and burn).

(There are torque converters that have multi-disc clutches)

While the TC is slipping it will multipy the torque into the trans.

This table exists so that the TCC can be released at lower TPS values for applications that involve ALOT of torque.

[turboberserker]

I have a triple disc and a turbo so I want her locked up tight don't I?

Confused hehe

This is my first automatic and all this fluid where gears should be has me confuddled

[joecar]

Is it the tune tool that is enforcing the max of 100%TPS...?
If the tune tool allowed it, would a higher value be meaningful to the PCM...?
Probably yes... that would be how to disable the WOT TCC release.

You may want to talk to Paul (Blacky) about this.

[turboberserker]

Yep the tuning tool lists the max value for those tables as 100% tps. That may be because of some limitation in the PCM.

[joecar]

We should still ask Paul about it though, because if it is the Tune Tool that imposes the maximum and not the PCM, then it may make sense to allow a slightly higher value (say 110%) to disable the TCC release.
Of course, I am just thinking out loud...

[turboberserker]

Oh I agree

[joecar]

Erik, I PM'd Paul just in case he didn't see this thread.

Cheers
Joe

[GMPX]

We have looked into this and the TCC lock controls go deeper than what can be controlled in that table for what you want to do. We will endevour to figure it all out at some stage and include the additional TCC controls into the cals.

Cheers,
Ross

[joecar]

Ross,

As usual, great customer service, thanks mate.

That reminds me, are there any tables for trans. base pressure in each gear (i.e. not during a shift)...?

Regards
Joe