Troubleshooting Bendix Fast Idle/Cruise Control on 89 35FC 3208 ATAAC

[Scott Forman]

PTs have a separate "high idle" switch on dash.

Scott



--- In WanderlodgeForum@yahoogroups.com, "Richard Gideon"
wrote:
>
> Hi Scott: Not sure how your PT 38 works; On my FC, reading from my
> owners manual, the engine idle speed can be increased, while
parked,
> by means of the cruise control switches; push the ON-OFF rocker
> switch to ON; then push and release RESUME rocker switch until
> desired RPM is attained. RPM will return to normal idle speed
when:
> 1. CRUISE CONTROL ON-OFF switch is turned off.
> 2. Transmission selector is moved from N position
> 3. Parking brake is released
>
> NOTE: Pressing on brake pedal will decrease RPM but speed will
return
> to higher setting as soon as pedal is released.(copied from my
manual)
>
> (On my 1989 FC, when trying to bump up the idle, pushing the RESUME
> rocker switch immediately causes the 3208 engine to soar to 3000
rpm).
>
> Dick Gideon
> Freedom Bird
> 1989 35FCSB
> Rolla, MO
>
> --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <sforman@>
> wrote:
> >
> > Is fast idle on all models handled through the CC? My fast idle
> > switch works fine, but my CC is inop on the road.
> >
> > Scott Forman
> > 86 PT38
> > Memphis
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Richard Gideon"
> > wrote:
> > >
> > > I need help understanding how to set the fast idle speed using
the
> > > cruise control on my 89 35FC 3208ATAAC. With engine idling at
650
> > > rpm and Cruise Control switch turned On, depressing the SET
seems
> to
> > > have no effect on the rpms; however when the RESUME switch is
> > > depressed, the rpm immediately increases to 3000. I quickly
turn
> the
> > > Cruise Control switch to OFF and the rpms reduce to 650 or 700
> > range.
> > >
> > > I've owned this coach just over 1 year and fixing this idle
speed
> > > thing is now reached the top of the "To Do" list.
> > >
> > > The Cruise Control does seem to operate, but not smoothly; if
set
> at
> > > 55 mph for instance, when speed drops to 55 the throttle opens
> FULLY
> > > and Turbo Boost goes to 8 or 10 psi or so depending on the
terrain
> > > and then vehicle speed goes slightly past the Set speed of 55
mph
> at
> > > which the time the throttle seems to fully close. Behaves as
> though
> > > throttle is either fully open or fully closed...no in between.
> > > Another serious thing...it appears that touching the brake does
> not
> > > disengage the Cruise Control; the Cruise Control can be
disengaged
> > > by turning the CC switch to OFF.
> > >
> > > Because of the above issues I do not have a functional Cruise
> > Control
> > > and feel it's unsafe to engage on most highways and when I do
use
> it
> > > the fuel economy suffers because of the jerky responce.
> > >
> > > Would very much like to get the obsolete Bendix back
operational
> if
> > > there is and easy fix; faulty ground? poor connections? bad ECM?
> > >
> > > Please share your experiences with me and other on this board.
> > > Perhaps its time to invest in a KING Cruise or Rostra?
> > >
> > > Dick Gideon
> > > Freedom Bird
> > > 1989 35FCSB
> > > Rolla, MO
> > >
> >
>