cruise control slows down over time - Steve Saunders Goldwing Forums

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post #1 of 5 (permalink) Old 02-21-2016, 02:06 AM Thread Starter
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Join Date: Jul 2015
Location: Eastern WA
Year: 1991
Make: honda
Model: GL1500 w/ champion daytona 2+2 sidecar
Posts: 24
cruise control slows down over time

GL1500 with large sidecar. Not sure what is causing it. It has a new cruise control air filter on it. If you set it at 75, about 10 minutes later you are going 68 or so. I haven't found any vacuum leaks but I honestly am not sure where to look for this particular problem. I've checked every hose i ran across and all seem to be OK. I've never owned a bike with a vacuum controlled CC before.

Also if you just hit the set button at 75 it will actually set about 71 if you just let go of the throttle as soon as the set light comes on. Gives the passenger in the hack kind of rush when that happens if it does.

So I hit the set switch then hold the accell switch on till I feel the cruise take the slack out of the throttle then I release it. It will run down the road for 3 or 4 miles fine then it start to slowly drift down. Sometimes it takes longer than others. Tonight it took about 7 miles for it to drift down 5 mph then I woke up as cars began passing me . Then I bumped it up again. I'd like to fix it if I can.
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post #2 of 5 (permalink) Old 02-21-2016, 06:08 AM
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Model: 2010 GL1800
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You probably need to adjust the slack out of the actuator cable so it sets without so much hesitation but other than that I have no idea. It's supposed to maintain X speed electronically, doesn't make sense it would slow down.

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post #3 of 5 (permalink) Old 02-21-2016, 10:52 AM
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the 1500 cruise typically sets lower than the speed you are at.

As Dave said, the cable needs to be adjusted to cause it to pull slightly harder when it is set.

77 is about the max speed it can be set at, unless you make the mod to swap the 4th and 5th gear wires to the cpu.

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post #4 of 5 (permalink) Old 02-21-2016, 08:36 PM
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Join Date: Mar 2011
Location: Fairfield, Virginia, USA
Model: 1997 GL1500SE/Lehman GTL Trike
Posts: 3,174
The time or two I have used it on our '97 ..... it also would set, appear to hold and soon you'ld be 5 mph slower.

I use my Vista Cruize throttle locks on both it and the '85 regularly. It's a habit from my formative years on British bikes with grubbing screws. Just enough tension to hold it if I let go is just enough to yet allows throttle adjustment with a twitch.

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post #5 of 5 (permalink) Old 02-22-2016, 08:37 AM Thread Starter
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Join Date: Jul 2015
Location: Eastern WA
Year: 1991
Make: honda
Model: GL1500 w/ champion daytona 2+2 sidecar
Posts: 24
thanks for the quick replies and the list of links.
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