TC lockup problems

[Bruce Plecan]

> Under WOT we are seeing consistent knock retard of 1-2 degrees at 82mph.
> Furthermore, the Engine RPM DECREASES approximately 150rpms even though
you
> have the throttle nailed.  Under further inspection we determined that the
> TC was locking up at exactly that same mph.  This explains the RPM drop
and
> the slight knock.
> What could be causing the TC to lockup??

It's in the program to do that, least as I recall.
No TCC lock up = no tranny cooler.

> Could the use of the 305 tables cause this??

Might have different speed setting.

> Is the PROM the only control for TC lockup?

No, there is a brake pedal switch, and pressure sensor in tranny.
Grumpy
>
> Tim
>

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