Tuning question for 730 ECM
timsiford at hushmail.com
timsiford at hushmail.com
Sun Oct 15 00:00:46 GMT 2000
>Are you sure it's only a speed related TCC apply? What happens if
>you disconnect the VSS?
I'm pretty darn sure. However, let me give credit where credit is due.
Greg Westphal and Jeff Fox discovered this. I confirmed it. Using a scan
tool the TCC apply happens at a particular mph. This is a mandatory lockup
and the anht_hac.pdf confirms the mph. TCC applies, RPMs drop, and MPH
keeps increasing. Funny thing is ... Diacom doesn't report the TCC apply.
Greg and Jeff found it using an OTC scanner (I think). Furthermore, Greg
installed a TCC lock harness ...
"I installed a TCC lock-up harness that keeps the TCC from locking up in
any gear but 4th. Poof! Problem gone! The harness installs between the
4-pin harness going to the tranny and the corresponding connector on the
left side of the tranny. You can find one for about $35-40 at Summit or
Jegs..."
Tim
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