Heres one for the Chrysler mechanics

"Steve8" wrote:
> Bucksnort73 wrote:
>
> > "eldred301" wrote:
>  > > My interpretation of the above reference book
> statement:
>  > >
>  > > The input shaft and the output shaft each have a
> speed sensor.
>  > > If the
>  > > ratio between the input and output speeds does not
> correspond
>  > > to one of
>  > > the "lockup" gear ratios, the transmission computer
> assumes
>  > > that one of
>  > > the clutches is slipping and sets a corresponding
> fault code.
>  > >
>  > > eldred
> >
> > Alright i have changed the input and output sensors
> P-R-N-D-L- switch
> > and the solenoid pack. Tranny works good until the torque
> converter
> > locks up then when it locks up it "chatters"(feels like it
> does a
> > double take when it locks up)
> > Any suggestions?
>
> Are you using ATF+III or ATF+IV? TC "chatter" or "shudder" is
> EXACTLY
> why Dexron III is not to be used in Chrysler 4-speed
> automatics.
>
> If its chattering WITH +III or +IV, then it may be a bad TC
> clutch, or
> its possible that your make/model has a trans controller flash
> upgrade
> available to address TCC shudder.

I filled it with atf 3 fluid also i noticed that it will go into
overdrive and torque converter will lock up at like 35 mph

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"Bucksnort73" > wrote in message
news:1_520933_95c36a90fe98dc0f84932fbee656b48b@aut oforumz.com...

> > If its chattering WITH +III or +IV, then it may be a bad TC
> > clutch, or
> > its possible that your make/model has a trans controller flash
> > upgrade
> > available to address TCC shudder.
>
> I filled it with atf 3 fluid also i noticed that it will go into
> overdrive and torque converter will lock up at like 35 mph

Read again his post where he makes mention of the TCM or
Tranny Control Module, that is, the computer for the tranny.
I don't see the original posts but if you have an
electronically controlled clutch, then it's possible the torque
convertor is starting to self-destruct because it's upshifting
too slowly. A firmware upgrade done at the dealer for about
$67.50 [unless a "recall" which is free] will help fix the problem.

I had this problem on an electronic, overdrive transmission
and sure enough, it's nicknamed the famous 37 mph
shudder. And wouldn't you know it, it came on like
clockwork at 37 mpg, then as it got worse, 42 mpg and so on.
Changed the fluid and filter, and upgraded the firmware
to the latest revision and the problem disappeared.

Could this be relevant to your problem, you think?

I am not a mechanic but a handful of kind Chrysler mechanics,
on this newsgroup and other groups, pinpointed the
problem for me.

Common problem on 41TE boxes are the input & output speed sensors, it's
worth changing both as the don't cost much.(at least not here in UK)