david.clement@verizon.net wrote:
> When running my 99 Dakota on the hiway at 70ish mph and the cruise
control the
> lock-up torque convertor will un-lock for a fraction of a second
every once in
> awhile. It only seemed to happen when the cruise was on and I figured
it was
> one of those things that was on the ragged edge and the computer
didn't know
> what to do.
>
> Well over the week end there was some traffic on the hiway so I
wasn't using
> the cruise and noticed that if I hit a good bump in the road
(expansion joint
> or the like) it would drop out then too.
>
> It's only for a fraction of a second and the rpm will jump maybe a 150rpm
> before it locks back up.
>
> Besides looking for a loose connection anyone have any hits on what
it might
> be? There are no codes and the tranny shifts fine otherwise and is
full of
> ATF+4.
>
You have the same exact problem I have with my 2001 Ram. I have not
figured it out yet. its done that ever since I bought it. Its been
getting worse lately. Another problem I noticed is a rattle from the
transmission tunnel. It seems to be transmitted through the chassis -
as I can't hear it from outside the truck. Just inside the cab. I fear
this quick jump in RPM may not be the lock up in the T.C - but internal
slippage instead because its so fast. I also have a problem with it,
where it will unlock and lock and unlock and lock over and over... but
not as rapidly... its slower in its progression. I'm pretty sure I have
a bad T.C - I just hope thats all it is.
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