2002 auto shift pattern

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DriveSpy - 28 May 2004 12:21 GMT

Automatic 4x4 with 3.73 rear by the way. When accelerating, what are the last
several shifts/events that should occur in sequence? 3-4, 4-5, T/C clutch
engagement. Or is the sequence T/C lock, 3-4, 4-5. Or can the transmission
modulate the clutch to effectively achieve a partial lock. Also, is it normal
under very light throttle on level ground or even very slight upgrade for the
vehicle to have the T/C clutch locked. If im careful on the throttle, mine
*nearly* lugs like a manual down to about 35 MPH which is slightly over 1K RPM
before it downshifts. No bucking or such, but you can tell there is no
slippage due to the T/C.

I'm way too curious. TIA.

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Bill Jeffrey - 28 May 2004 14:32 GMT

[4.6L, 3.73, 5R55W transmission] This question becomes much more
important if you tow a trailer. The shift pattern in the 5-4 and 4-3
downshift arena seems all wrong to me, but I can't get anyone at Ford to
even talk to me about it. Is there any definitive info out there? Is
there a factory upgrade to the transmission computer program (I bought
my Explorer fairly early in the production cycle)?

Bill Jeffrey
======================

> Automatic 4x4 with 3.73 rear by the way. When accelerating, what are the last
> several shifts/events that should occur in sequence? 3-4, 4-5, T/C clutch
[quoted text clipped - 7 lines]
>
> I'm way too curious. TIA.

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AZGuy - 31 May 2004 00:26 GMT

>Automatic 4x4 with 3.73 rear by the way. When accelerating, what are the last
>several shifts/events that should occur in sequence? 3-4, 4-5, T/C clutch
[quoted text clipped - 7 lines]
>
>I'm way too curious. TIA.

The TC can run at something like 70% lock and you may or may not be
able to tell it's not fully locked. It's normal, not a malfunction.
When things aren't quite right you get the famous "TC shudder".
Sounds like you aren't getting that. Ford seems to have some really
odd shift programming in some of these transmissions where it feels
like it's both upshifting and downshifting at the same time by how it
locks/unlocks the TC and goes in and out of OD and other gears.
--
Elbridge Gerry, of Massachusetts:

"What, sir, is the use of militia? It is to prevent the
establishment of a standing army, the bane of liberty. . .
Whenever Government means to invade the rights and liberties of
the people, they always attempt to destroy the militia, in order
to raise a standing army upon its ruins." -- Debate, U.S. House
of Representatives, August 17, 1789

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