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Unresponsive throttle

I just had this exact same thing happen to me today. Riding to work as usual, no error codes or lights or strange behavior until I went to accelerate hard, and nothing. It just baaaaaarely accelerated.

Pulled over, went into the 'settings' menu and didn't see any engine codes. Turned off the bike, turned it back on, and it's working as usual. Full power, smooth throttle. Did a few high RPM runs with no issues. :confused:

Not very confidence inspiring... I'll try the TPU connector I suppose. I hate intermittent issues like this.
 
kuksul08 said:
I just had this exact same thing happen to me today. Riding to work as usual, no error codes or lights or strange behavior until I went to accelerate hard, and nothing. It just baaaaaarely accelerated.

Pulled over, went into the 'settings' menu and didn't see any engine codes. Turned off the bike, turned it back on, and it's working as usual. Full power, smooth throttle. Did a few high RPM runs with no issues. :confused:

Not very confidence inspiring... I'll try the TPU connector I suppose. I hate intermittent issues like this.
Click to expand...

Did you get yours replaced under the TSB?
 
Yes I did, about 2 years ago now. Never had a problem with it before or after the replacement.

The good thing at least (I think) is that this is not characteristic of the dash/ecu failure. That supposedly includes lots of flashing lights.
 
Very issue I had early with my '13. Started off as occasional nuisance and impossible to duplicate. After a year and couple thousand miles, happened almost daily. Never saw it again after the TPS recall.

Only correlation I noted was always happened on cold starts. I got good at rolling restarts when I didn't notice the limp mode until out of the neighborhood...
 
Based on my most recent experience the bike was thoroughly warmed up when it started in limp mode. What year is you SP Kuksul?
 
kuksul08 said:
Yes I did, about 2 years ago now. Never had a problem with it before or after the replacement.

The good thing at least (I think) is that this is not characteristic of the dash/ecu failure. That supposedly includes lots of flashing lights.
Click to expand...

Dang, I wonder if anybody else who got one of those replacements(myself included) will have the issue rear its head again.

Did you go ahead and double check your battery connections?
 
kuksul08 said:
Mine is a 2014, made some time in late 2013 I believe.
Click to expand...

Ah, mine is a 2015 so supposedly a lot of these issues should have been solved. I've been lazy (or busy with work) but I need to double check the battery connection again (last ride had a few nicely bumpy roads) and check the TPS connection, then ride it again and see if the problem comes back. If it keeps showing up I'll just keep going to Munroe until I get something warrantied :)
 
I JUST did some fiddling and re-tightened the battery cables so I'm sure it's not that, but I will certainly check on it.
 
The plot thickens, it seems the problem is getting worse, as I now find the bike starts in limp mode roughly half the time. I've also noticed two instance where the dashboard will flash the dreaded "christmas tree" before returning to normal functions and leaving the bike in limp mode. I've seen this happen once shortly after starting the bike and beginning to ride off, and once at the end of a ride as I was putting the bike in the garage. I've got to make the bike presentable after which I'll take it to the dealer for another pass.
 
Damn. Wonder what it could be. Seems like people who had the Christmas tree failure had it once and it stuck, never to function properly again. Because it's intermittent it makes me think there is a loose connection.

This is actually reminding me of the time jokeshopbeard found a broken wire on his wiring harness right near the steering column. There is a little red band of tape. I wonder if it's something like that.
 
kuksul08 said:
Damn. Wonder what it could be. Seems like people who had the Christmas tree failure had it once and it stuck, never to function properly again. Because it's intermittent it makes me think there is a loose connection.

This is actually reminding me of the time jokeshopbeard found a broken wire on his wiring harness right near the steering column. There is a little red band of tape. I wonder if it's something like that.
Click to expand...

Interesting. Due to some foolishness on my part I'll be replacing the headlight bracket as soon as I get the part. That ought to give me a chance to thoroughly inspect the wiring harness. Given this has only started recently it could be unrelated to over all limp mode issue and instead related to the broken tab on my headlight bracket (which coincidentally happened with enough force to knock the headlight connection loose). Good thing Motoguild is a mere 25 minutes away!
 
Well, progress of sorts. I last rode the bike on 26th to moto guild and back to change the oil. Symptoms were more or less the same, it'd sometimes start in limp mode but killing and restarting would bring it back to life. It was raining so the bike did get wet.

I went to ride it to work today and it was permanently stuck in limp mode. Moreover I noticed that I can consistently get the xmas tree lights and "error" on the dash if I turn the bars to the right full lock. I looked and didn't see anything obviously loose or being pinched / pulled in that position. I'm starting to wonder if once of the canbus filters might have come loose and is creating a short.

Unfortunately I'll likely have to pay Munroe to dig into this as I don't relish the idea of riding all the way to treasure island in limp mode. Hopefully it's something as simple as a short and not a fried dash or ECU.
 
N4teTheGreat said:
Well, progress of sorts. I last rode the bike on 26th to moto guild and back to change the oil. Symptoms were more or less the same, it'd sometimes start in limp mode but killing and restarting would bring it back to life. It was raining so the bike did get wet.

I went to ride it to work today and it was permanently stuck in limp mode. Moreover I noticed that I can consistently get the xmas tree lights and "error" on the dash if I turn the bars to the right full lock. I looked and didn't see anything obviously loose or being pinched / pulled in that position. I'm starting to wonder if once of the canbus filters might have come loose and is creating a short.

Unfortunately I'll likely have to pay Munroe to dig into this as I don't relish the idea of riding all the way to treasure island in limp mode. Hopefully it's something as simple as a short and not a fried dash or ECU.
Click to expand...

That sounds very similar to the issue Jokeshopbeard had.

On the left side of the bike near the steering head, you will see the wiring bundle zip-tied to the frame and there is probably a piece of red tape around it. Inside, there is a splice from the factory, which fatigues and breaks.

It's a pain but you could check this by simply pulling the tape off the wire bundle. http://hyperstrada.com/mechanical-technical/3683-dash-flicking-off.html His pictures are dead due to photobucket dying. :eek:

Anyway that's all I got!!
 
kuksul08 said:
That sounds very similar to the issue Jokeshopbeard had.

On the left side of the bike near the steering head, you will see the wiring bundle zip-tied to the frame and there is probably a piece of red tape around it. Inside, there is a splice from the factory, which fatigues and breaks.

It's a pain but you could check this by simply pulling the tape off the wire bundle. http://hyperstrada.com/mechanical-technical/3683-dash-flicking-off.html His pictures are dead due to photobucket dying. :eek:

Anyway that's all I got!!
Click to expand...

Ok thanks, I'm hoping it's something simple like that. I got it out of limp mode for a moment this morning but it dropped right back in which is new, so I'm guessing if it is this it's just gotten worse after getting wet. I'll have to take the entire headlight assembly and dash apart to install a new headlight bracket (which gets here on Tuesday) so maybe I'll see if I can find and fix this then prior to paying Munroe the big bucks.
 
By the way I haven't had my issue come back. Just that once was it, but I will certainly keep you posted if I have it and come to a solution.
 
N4teTheGreat said:
Ok thanks, I'm hoping it's something simple like that. I got it out of limp mode for a moment this morning but it dropped right back in which is new, so I'm guessing if it is this it's just gotten worse after getting wet. I'll have to take the entire headlight assembly and dash apart to install a new headlight bracket (which gets here on Tuesday) so maybe I'll see if I can find and fix this then prior to paying Munroe the big bucks.
Click to expand...

Probably something related to the bracket and attached wiring. seems a reasonable assumption.
 
Well, I have no idea exactly what the issue was, but the bike is happy again. I did notice that the metal brackets which held the headlight bracket in place were bent enough that there was some some tension on the wiring harness. I'm guess that it may have been pulling on a connection (maybe the in line resistors put in to avoid the dash frying?). At any rate, when I reinstalled everything I kept the zip ties holding everything in place loose to keep anything from pulling. No more limp mode (so far) after about 30 miles and several restarts. It's good to have the throttle response back again!
 

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