Re: 4-speed auto overdrive lockup

T. Park (tjp@u.washington.edu)
Tue, 24 Aug 1999 18:42:21 -0700 (PDT)

Also there was service bulletin on ZF4HP transmission on 505 Turbo
Station wagon and SW8 which solves the vibration problem by
replacing a spring in the transmission valve body thus increasing
the lockup speed. So speed will vary whether the service has been
performed or not.

tj

On Tue, 24 Aug 1999, boz wrote:

> >I would like to take a poll. For those with this transmission, at what
>
> >point does the overdrive lockup occur. On my 1989 505SWTurbo, its
> 62mph. I am
> >curious as to whether this is standard or whether it varies.
> >
> >Mort
>
> Mine seems to give that 'lockup sensation' at about 52 mph; not sure
> this is correct, but I'd think possibly this could be variable and
> related to how one has the trans cable adjusted on the throttle body?
> Brian O.
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