GM tbi

[Steven Gorkowski]

Hi Shannen

I think your on the money . I pulled it off and it is a electric motor I
think I need to put it on my Mustang when my Nephew volunteers to wash
the car. Thanks to all that helped get this information.

Steve

Shannen Durphey wrote:

> Steven Gorkowski wrote:
>
> > The unit is factory all the way . This solenoid mounts are cast into
> the
> > main body and the linkage is a integral part of the unit which
> connects
> > to the throttle plates. Any help would be appreciated .
> >
> > thanks
> > Steve Gorkowski
> >
> > Shannen Durphey wrote:
> >
> > > Steven Gorkowski wrote:
> > >
> > > > I have a Rochester Products T.B.I. unit it has stamped DESIGN
> UNIT
> > > and a
> > > > number 17090003  next to a GM logo . It looks like a standard
> > > throtle
> > > > body but has a solinoid that when 12v is applyed the throtle
> plates
> > > go
> > > > to wide open. The unit had a tag that said it is for a 350 ci
> .Do
> > > you
> > > > have any information on these units?
> > >
> > >   Hmmm.  Curious description.  Does the solenoid look like it's
> > > factory
> > > installed?  Is this something someone might have modified?  Some
> of
> > > the 454
> > > units had a vacuum controlled throttle stop which would keep
> throttle
> > > plates
> > > from closing too quickly when shifting (manual trans).  Maybe
> solenoid
> > > was
> > > installed there?  Or maybe it's just an idle speed control which
> is
> > > mis-adjusted?  Anyway, I'll take a look and see if that number is
> good
> > > or
> > > crosses over to something else tomorrow.
> > >
> > > Shannen
>
>   Think I've found your unit.  Found 17090004, and it fits GM medium
> duty
> truck with 366 and governor, 89-90.  Headed back to the manuals and
> sure
> enough, TBI with governor has an electric control motor mounted on the
> side
> to open the throttle plates.  Throttle plate opening is limited by the
>
> mechanical linkage, and the motor is actuated by the ECM.  Called a
> model
> 295 TBI.  Should look like an ugly, large conglomeration of linkage
> when
> compared to a standard TBI.  Sounds like the unit to use on a
> teenager's hot
> rod. Other than that, find a stock one. : )
>
> Shannen