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

[Richard Gideon]

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
> >
>