I second the possible cause could be the Vacuum modulator..."either going
bad or the vacuum hose has a leak". The modulator on the 400 is on the
passenger front of the transmission though not on the back. The kick down
mechanism should be an electric switch off the throttle or on the gas pedal
inside the cab. How's the fluid level and condition?
Joe
----- Original Message -----
From: "G. L. Perry" <glperry@fwi.com>
To: "McNulty, Bob" <BMcNulty@csuchico.edu>; <oletrucks@autox.team.net>
Sent: Thursday, April 03, 2003 10:09 AM
Subject: Re: [oletrucks] Transmission Question
> Vacumm modulator I think on those? At back of pan. Has a vacumm line to
> intake? OR, the cable that goes up to the carb is a shift timing cable. It
> shifts depending on position of throttle. If it shifts right away and
> quickly to top gear, this is usually gone or mis-adjusted. A good trans
shop
> will go for a free "test" ride and give you
> ideas also.
>
> G. L. Perry
>
> ----- Original Message -----
> From: "McNulty, Bob" <BMcNulty@csuchico.edu>
> To: <oletrucks@autox.team.net>
> Sent: Thursday, April 03, 2003 11:36 AM
> Subject: [oletrucks] Transmission Question
>
>
> > I'm running a turbo 400 Tranny and have a question I hope you can help
> > me with.
> >
> > It seems to shift hard into second gear. It is usually smooth shifting
> > when it is cold but once it warms up I have to play accelerator games to
> > keep it from banging into second. Third is fine and smooth.
> >
> > I've never been big on automatics so I don't know much about the innerds
> > other than the basics. Any ideas on adjustments or quick fixes, before
> > I take it to a Tranny guy?
> >
> > Thanks
> > Bob
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|