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Topic: Is this normal for cruise control? (Read 1220 times) previous topic - next topic

Is this normal for cruise control?

When driving the coach home this weekend, I noticed that when I used my turn signal to pass a vehicle the cruise control would kick off. Never noticed it before, but is this normal?

Larry
Larry Warren
1996  U320 36' SBID "Lola" sold 2020
Build #4970
Motorcade #18318

Re: Is this normal for cruise control?

Reply #1
No, sounds like it's back feeding, making the cruise think the brake lights are activated. Have checked to lights physically, while someone works the lever and brake pedal?
Chris
Chris and Tammy White  CDA Idaho
Previous owners 1997 U295 36' 3126 Cat 300 HP Build # 4998
Former Foretravel tech & RVIA certified tech
Former owner Custom Satellite home/RV satellites 
Former owner Vans LTD  van conversions
Unemployed, panhandler, drag racer NHRA #6348

Re: Is this normal for cruise control?

Reply #2
Yes. Dirt and crud built up in the switch of smart wheel. Dim/bright or turn would make cruise kick off. Hitting wiper buttons would make cruise kick off. MOT took apart wheel, cleaned contacts and has worked perfectly sense
Tim Fiedler    2025 LTV Unity MBL on Order
2000 Chevy Tracker 2 Door Convertible 4WD Now lifted 4.5"
1985 Citroen 2CV6 Charleston
Murphy Rebel on wheels with 175HP Titan
Cessna P337
1980 48' Westport MY (!/4 Share)

Re: Is this normal for cruise control?

Reply #3
Larry,

You and Jerry Whiteaker should get together - sounds like your coaches are both being infested by the same electrical gremlins!

TURN SIGNAL CAUSING BRAKE LIGHT TO FLASH
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Is this normal for cruise control?

Reply #4
Larry,
Looks like we have a similar problem.  One thing I forgot to mention, when the problem was happening, the engine was also surging a little bit.  Most noticable at a low speed in first gear although I could feel it at any speed.  I think this is/was due to the King throttle control which is electric not giving a steady pull on the throttle cable.  Did you notice that, if you have the King throttle?
Jerry Whiteaker former owner 96 U270  36' #4831 Austin,TX-Owner Mods LCD TV w/front cabinet rebuild - LCD TV bedroom - Dual Central AC, either can cool coach w 30 amp - Skylights at roof AC openings - Drop ceiling for ducting of AC - Shower skylight white gelcoat/wood/epoxy frame - Air Springs/Shocks replaced - 2014 CRV - 8K Home Solar - Chevy Volt

Re: Is this normal for cruise control?

Reply #5
Chris, I didn't have the wife watching while I drove. I will this weekend when we bring it home again.

Tim, I don't have the smart wheel. My cruise is on the urn signal stalk like the older GM vehicles.

Jerry, I didn't notice any surge. I was doing 70 down the highway and passed a tractor trailer. Turned on signal to pass and the cruise kicked off. Then happened again when I turned on the signal to exit the highway.

Larry
Larry Warren
1996  U320 36' SBID "Lola" sold 2020
Build #4970
Motorcade #18318

Re: Is this normal for cruise control?

Reply #6
I would peel back the rubber cover on the turn signal stalk and inspect the cruise switch to begin with.
Dub McBride 1996 270

Re: Is this normal for cruise control?

Reply #7
When driving the coach home this weekend, I noticed that when I used my turn signal to pass a vehicle the cruise control would kick off. Never noticed it before, but is this normal?

Larry
Strangely enough, yes it is normal.  The cruise control sees a brake light, or the electrical version of one, and does its thing.  Your 4-way flashers will do the same thing.  Noticing this only shows that you're getting comfortable driving your rig.
1992 Foretravel Grand Villa
U225 SBID Build No. 4134
1986 Rockwood Driftwood
1968 S.I.A.T.A. Spring
1962 Studebaker Lark
1986 Honda VF700C
1983 Honda VF750C
Charlie, the Dog was broken out of jail 24 Oct 2023
N1RPN
AA1OH (H)e who must be obeyed.

Re: Is this normal for cruise control?

Reply #8
this is not normal Larry. Cruise shutting down like that would render it useless. If it senses a turn signal the same as a brake light then it's sensing wrong. Unless I'm misunderstanding op.
Dub McBride 1996 270

Re: Is this normal for cruise control?

Reply #9
If you have a converter installed between coach and tow car (the thing that allows for integrated brake/turn signal lights) might try unplugging it and see if it's back feeding somehow. 
"Not so  long ago we were a nation of risk takers, riding five million pounds of  thrust straight into space."  Joe Gresh
Chuck Pearson
1996 U295
2018 Can Am X3 TurboRS

Re: Is this normal for cruise control?

Reply #10
Ours does the same thing. Yep.. shuts off when turn signal is used.  Always has.  I just figured it was a built in safety thing.  Like maybe I was supposed to have personal control when passing.    Or turning a corner.  Not to far fetched maybe ??
Robert and Susan
 1995 36' 280 WTBI 8.3 3060r
 1200 watts on the roof, 720 Ah of lithium's
 Build # 4637. Motorcade # 17599
        FMCA  # 451505
        18  Wrangler JLUR

Re: Is this normal for cruise control?

Reply #11
I could be wrong, I never noticed mine doing it , guess I will back out
Dub McBride 1996 270

Re: Is this normal for cruise control?

Reply #12
My coach has not done that (turn signal kicking off the cruise control) for the 10 yrs that I have owned it.  It did it for 2 days recently then went away.  It took me a day to figure out what was causing it.  Mine may have been due to the electrical tow cable. Any time the brake light comes on it will disengage the cruise control as it is supposed to do.  Turn signal should not cause the brake light to flash.
Jerry Whiteaker former owner 96 U270  36' #4831 Austin,TX-Owner Mods LCD TV w/front cabinet rebuild - LCD TV bedroom - Dual Central AC, either can cool coach w 30 amp - Skylights at roof AC openings - Drop ceiling for ducting of AC - Shower skylight white gelcoat/wood/epoxy frame - Air Springs/Shocks replaced - 2014 CRV - 8K Home Solar - Chevy Volt

Re: Is this normal for cruise control?

Reply #13
I can understand the brake light signal shutting it off. I will have to chase down if their is a short, bad bulb or just gremlins.

Thanks for the comments, keep em coming

Larry
Larry Warren
1996  U320 36' SBID "Lola" sold 2020
Build #4970
Motorcade #18318

Re: Is this normal for cruise control?

Reply #14
Jerry, have you checked the bulbs, I have had one filament burn off and drop onto the other filament,all kinds of strange things happen .... Hope you find your problem..
Safe Travels,
Dave
2001 U320 40ft
Build #5867
2003 Tracker
VE7DOD

Re: Is this normal for cruise control?

Reply #15
I know ours has done the off thing when turning for a long time but I'm actually betting it's not supposed to. 
  I guess I'll be investigating that now.  Dang it's always something.  Good thing we LOVE our coach cause we'll do whatever's needed.
Robert and Susan
 1995 36' 280 WTBI 8.3 3060r
 1200 watts on the roof, 720 Ah of lithium's
 Build # 4637. Motorcade # 17599
        FMCA  # 451505
        18  Wrangler JLUR

Re: Is this normal for cruise control?

Reply #16
Jerry, have you checked the bulbs,
Safe Travels,
Dave
That was one of the first things I checked.  Tapped on the bulbs to see if maybe a filament was broken as sometimes they look ok when they are actually broken.  Drove coach to storage last night, turn signals and other lights normal.
Jerry Whiteaker former owner 96 U270  36' #4831 Austin,TX-Owner Mods LCD TV w/front cabinet rebuild - LCD TV bedroom - Dual Central AC, either can cool coach w 30 amp - Skylights at roof AC openings - Drop ceiling for ducting of AC - Shower skylight white gelcoat/wood/epoxy frame - Air Springs/Shocks replaced - 2014 CRV - 8K Home Solar - Chevy Volt

Re: Is this normal for cruise control?

Reply #17
Well Jerry, Good ideas can be easily discarded!! Hope you find you problem .
Safe Travels
Dave
2001 U320 40ft
Build #5867
2003 Tracker
VE7DOD

Re: Is this normal for cruise control?

Reply #18
Brett will hate me after installing a King Control (set to 75%) unit. After 300,000 miles of driving without one, I never use his. Old habits, 'ya know!  ^.^d
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'

Re: Is this normal for cruise control?

Reply #19
 Nope, no problem.

Except on relatively flat ground, a good driver can do better (particularly from an MPG standpoint) than a cruise. On many small, short grades (like freeway overpasses), a cruise will go to WOT, while a smart driver doesn't do anything.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Is this normal for cruise control?

Reply #20
My opinion these 6 speeds shift down to quick as in slight overpass grade. Even a 300 wouldn't lug in that short of pull. Rev up and suck fuel just like Bret said all to get over a no hill.
Dub McBride 1996 270

Re: Is this normal for cruise control?

Reply #21
Dub,

Use "economy mode" to markedly reduce downshifts on those overpasses.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Is this normal for cruise control?

Reply #22
I don't see that option on my shift pad Bret. Didn't think 96 had it. Hope I'm wrong.
Dub McBride 1996 270

Re: Is this normal for cruise control?

Reply #23
Upper right corner of the Allison shift pad.  Labeled "mode".

Default is power mode-- starts there at every restart of the engine.  Pushing the mode button puts it in economy mode and the little red light illuminates.

You can switch between the two as often as you like, while stopped or driving- any speed, any time.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Is this normal for cruise control?

Reply #24
Sitting in the bus now and I wanna thank ya. Crap I thought the word mode meant that the transmission was in the gear lit up on the screen. Man I don't know how I get out of the blasted yard let alone make it down the road.
Dub McBride 1996 270