Troubleshooting Bendix Fast Idle/Cruise Control on 89 35FC 3208 ATAAC
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01-11-2008, 01:55
Post: #19
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Troubleshooting Bendix Fast Idle/Cruise Control on 89 35FC 3208 ATAAC
Dick,
Thanks, I appreciate the update on your progress. I have an intermittent high idle issue, Sometimes it works fine, Other times the 3208 revs up and I quickly hit the off button. Our cruise works great, So I am interested in your final outcome. Thanks Again, Bill 88 FC Michigan --- In WanderlodgeForum@yahoogroups.com, "Richard Gideon" > > My multimeter testing indicated the potentiometer to be faulty or at > least out of tolernce. I tested with the 'pot' still on the coach > and now am traveling in South Texas and will replace pot in April > after this trip. Parts man named Spark at Seattle Clutch & Brake > fixed me up with a new Bendix pot and spring assembly P/N 101951N. > > The CC works poorly but is still useful to allow me to keep my coach > speed above the set speed (cruise control helps pull the injector > pump to 'WOT' wide open throttle. > > The high idle still behaves same as when I first bought the FC back > in Sept 2006, i.e. goes to 3000 rpm immediately when pressing the > resume switch on the CC panel. > > Dick Gideon > 1989 35 FC > On the road, Canyon Lake, Texas > > > --- In WanderlodgeForum@yahoogroups.com, "Richard Hayden" > > > > > Still is not working even with the new CC-5. I'll look into it > later after we've settled at the winter quarters. Leaving tomorrow > morning. > > > > Dick Hayden - '87 PT 38 - Lake Stevens, WA > > > > ----- Original Message ----- > > From: Curt Sprenger > > To: > WanderlodgeForum@yahoogroups.com > > Sent: Monday, October 15, 2007 3:20 PM > > Subject: Re: [WanderlodgeForum] Re: Troubleshooting Bendix Fast > Idle/Cruise Control on 89 35FC 3208 ATAAC > > > > > > Dick, > > > > FYI in case you need a CC-5 unit. The CC-5 unit is no longer > manufactured. A > > couple of us just purchased CC-5 potentiometer units through > Brake & Clutch > > Supply, Seattle, Washington. Talk to Spark. I bought one for > possible > > future need. Dick Hayden bought one because his CC was not > working. > > > > On 10/15/07, Richard Gideon > wrote: > > > > > > Thanks for the reply Ralph: Early this morning I got into > my "blue > > > box" and retrieved the booklet describing the operation and > > > troubleshooting the Bendix Cruise Control System (SD-10-1)and > on page > > > 15 of the booklet I found the symptoms, cause & remedy for what > > > appears to be ailing the CC on my FC. > > > > > > V. Cruise Control System oscillates above and below the speed > > > setting. Will not hold a specific speed setting within plus or > minus > > > 1 mph on level highway. > > > > > > Cause, CC-5 potentiometer or its wiring is defective. > > > > > > Remedy. Visually inspect for broken or obviously damaged wiring > to > > > the CC-5 potentiometer (Figure 13). Disconnect wiring connector > 3 in > > > Figure 13 and check the resistance between the sockets shown: > > > > > > 1 and 3 3600-4400 ohms > > > 2 and 3 1080-1320 ohms > > > 1 and 2 4320-5280 ohms > > > > > > If these readings are not obtained, replace the CC-5 > potentiometer. > > > > > > I'll post later this week, with the results of my testing. > Thanks > > > for the guidance...I"ll dig out my digital volt/ohmeter. > > > > > > Dick Gideon > > > Freedom Bird > > > 1989 35FCSB > > > Rolla, MO > > > > > > --- In > WanderlodgeForum@yahoogroups.com > > > "Ralph L. Fullenwider" > > > > > > > > > > > PT cruise/air throttle/high idle > > > > > > > > Some time back, I posted to the files section, a couple of > files > > > on how > > > > these systems work and inter act. > > > > > > > > As for the FC's it is a little difference because the factory > <BB> > > > dip > > > > switch settings allowed the fc cruise controls to work > slightly > > > different > > > > than the PT's. > > > > > > > > As for the problem in the FC, where it is on or off and no in > > > between, I > > > > would suspect the CC5 potentiometer internal of the cylinder > to be > > > faulty. > > > > All this can be checked with a decent Multimeter and > following the > > > checks > > > > in the Bendix manual that should be in the blue box. > > > > > > > > The only thing I have found that was done a little funky form > the > > > factory, > > > > is how the clutch switch was wired up since there are no > clutches > > > in the > > > > Birds and that was done with 2 solenoids in the system. I have > > > actually > > > > taken those out of the system to get my cruise working > properly and > > > that > > > > was done with a pair of side cutters! you > have > > > cruise. > > > > Now the problem with the break pedal not canceling the cruise > is or > > > has > > > > generally been a bad set switch or corroded contacts in a > > > connector. And > > > > can usually be cleared up by cleaning the pin contacts coming > from > > > the > > > > Bendix control. > > > > > > > > Remember that our Coaches put out 120 to 130 psi of air and > there > > > is a > > > > regulator with the bendix set up to drop that pressure to 80 > to 90 > > > psi, > > > > thereby making the working difference of only a few psi > > > differential that > > > > the electronics of the bendix system reads and enacts on. > > > > > > > > > > > > > > > > > Safe travels, > > > > > > > > Ralph and Charolette Fullenwider > > > > 84FC35 > > > > Duncan, Oklahoma > > > > > > > > > > > > > > > > > -- > > Curt Sprenger > > 1987 PT38 8V92 "MacAttack Racing" > > Anaheim Hills, CA > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > |
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