Help Please - Bike Slows Down Abruptly When Closing Throttle
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Road Captain
Joined: Oct 2007
Posts: 568
Likes: 147
From: Georgia
I appreciate all the replies - they're helpful.
The low speed throttle response was an example I was using but this happens at higher speed as well. And yes, the bike does have cruise control.
With the new Low Rider S I bought, which also has cruise, I can close the throttle very suddenly and yet it is a very smooth transition. My Street Glide is behaving much differently.
Foxtrapper - my tuner thinks it may also be the throttle blade setting though he says he never adjusted that. I will have to order the TTS cable and try playing with that setting but wasn't convinced that it was it but what you are saying makes sense.
If anybody has other suggestions please shoot them over.
The low speed throttle response was an example I was using but this happens at higher speed as well. And yes, the bike does have cruise control.
With the new Low Rider S I bought, which also has cruise, I can close the throttle very suddenly and yet it is a very smooth transition. My Street Glide is behaving much differently.
Foxtrapper - my tuner thinks it may also be the throttle blade setting though he says he never adjusted that. I will have to order the TTS cable and try playing with that setting but wasn't convinced that it was it but what you are saying makes sense.
If anybody has other suggestions please shoot them over.
Road Captain
Joined: Jun 2013
Posts: 671
Likes: 168
From: Ontario, Canada
I added extra closed throttle timing advance to get rid of excessive decal popping and it had the same effect. As you roll off the throttle it's smooth until you reach the closed throttle position, then the bike really slows down and sounds like a truck exhaust brake. It got rid of the popping but it isn't as smooth as it was. At some point I'm going to take it to get dyno tuned to hopefully find a happy medium of popping vs excessive engine braking.
Road Warrior
Joined: Aug 2009
Posts: 1,889
Likes: 104
From: Mississippi
I've got a 2013 Street Glide with an Woods cam and SE breather with CFR exhaust. The bike has been dyno tuned locally using a TTS Mastertune.
The problem I'm having is that whenever I close the throttle, regardless of the speed, the bike slows down abruptly. Even if I close the throttle gently you can still feel a slight jerk when the gas is off. This is a particular problem at slower speeds when I'm negotiating a tight turn and let off the gas in 1st or 2nd as it can make the bike unstable.
It's behaved this way as long as I can remember. I thought it was normal until I bought a new Dyna that doesn't do this.
My tuner says that this is not a tuning issue.
Has anybody else experienced this or can suggest what the issue might be?
The problem I'm having is that whenever I close the throttle, regardless of the speed, the bike slows down abruptly. Even if I close the throttle gently you can still feel a slight jerk when the gas is off. This is a particular problem at slower speeds when I'm negotiating a tight turn and let off the gas in 1st or 2nd as it can make the bike unstable.
It's behaved this way as long as I can remember. I thought it was normal until I bought a new Dyna that doesn't do this.
My tuner says that this is not a tuning issue.
Has anybody else experienced this or can suggest what the issue might be?
Outstanding HDF Member
Joined: Aug 2009
Posts: 2,858
Likes: 217
From: Puyallup Wa.
I know exactly what you mean the bike won't Coast when coming off throttle just slows down like a boat anchor. If you don't find an obvious mechanical problem you're going to need to get into that TTS tuner and look at the throttle blade control and as the others suggested. That was the first thing I disliked about my first fuel-injected bike.
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Road Captain
Joined: Oct 2007
Posts: 568
Likes: 147
From: Georgia
Nope, the bike runs like a champ.
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Thread Starter
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Road Captain
Joined: Oct 2007
Posts: 568
Likes: 147
From: Georgia
I know exactly what you mean the bike won't Coast when coming off throttle just slows down like a boat anchor. If you don't find an obvious mechanical problem you're going to need to get into that TTS tuner and look at the throttle blade control and as the others suggested. That was the first thing I disliked about my first fuel-injected bike.
Hate Work - It's happening between 2,500 and 3,200 rpms. I'm duplicating the same thing on my Dyna and it is REALLY smooth on it. Completely opposite than the Street Glide.
Just Me - brakes aren't sticking and I don't think that the belt has been adjusted but I'll ask my mechanic if that's a possibility if the throttle blade control doesn't work.
Thanks for the suggestions guys.
Grand HDF Member
Joined: Jan 2012
Posts: 4,459
Likes: 2,892
From: Oklahoma
Does the bike coast normally if you just pull in the clutch? If so, that eliminates everything but the engine. If it slows abruptly with the clutch pulled in, it ISN'T the engine, but something else. Dragging brake, wheel bearing, then I'm out of ideas.