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post #1 of 3 (permalink) Old 10-09-05, 06:01 AM
dad1wood
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Transmission 'JUMPS' Ford/LM

99 LM trani 'jumps' slightly into first coming to full stop... trani guys
say no problem; never happened with old planetary Town Car tranis...this
new electronic stuff is an irritant

 
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post #2 of 3 (permalink) Old 10-09-05, 06:01 AM
tom
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Re: Transmission 'JUMPS' Ford/LM

sounds like you have a problem. none of my 5 do that
"dad1wood" <dad1wood@aol.com> wrote in message
news:cc0321573e85c485420cdecef98a2274@localhost.talkaboutautos.com...
> 99 LM trani 'jumps' slightly into first coming to full stop... trani guys
> say no problem; never happened with old planetary Town Car tranis...this
> new electronic stuff is an irritant
>



 
post #3 of 3 (permalink) Old 10-09-05, 07:01 AM
lugnut
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Re: Transmission 'JUMPS' Ford/LM

On Sun, 09 Oct 2005 07:02:13 -0400, "dad1wood"
<dad1wood@aol.com> wrote:

>99 LM trani 'jumps' slightly into first coming to full stop... trani guys
>say no problem; never happened with old planetary Town Car tranis...this
>new electronic stuff is an irritant



If you feel what I think you are talking about as the
vehicle is slowing between 30-35 mph, you are feeling the
converter unlock and the trans downshift as it should. The
older ones did not do this. There was an update a few years
ago on the converter solenoid that makes it operate more
positively to reduce converter lock time and shudder which
you would like even less. This is usually only noticeable
to those who prefer a slushbox over a real transmission. It
should be damn near undetectable if you have had the trans
serviced every 25-30k miles as your should. This condition
can be smoothed out considerably with a complete service
including draining the converter. The service is not
complete unless you drain the converter. I do not recommend
the flushing method for this trans since the converter can
be drained and the pan need to come off anyway to replace
the filter. BTW, your transmission uses planetary gear sets
and, they are never going back to the "good ol' days" which
we do not always remember as they really were.

Good luck
Lugnut
 
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