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Old 06-29-2014, 07:03 PM   #1
rubRsidedown OP
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What would be the cause of this on my 05.5 950 ADVenture?


This has happened only a few times within the last week or so but I am also unable to duplicate it to try and find the cause which isn't good.

While riding along the bike runs like a top, pulls great thru all gears, once I down shift from 3rd to 2nd or 2nd to 1st when I beging to let the clutch out the bike begins to stall, pull the clutch back in, it idles properly, let the clutch out and it wants to stall once again. A few times I had to restart the bike from a dead stop on the side of the road, fires right back up and runs strong upshifting but every now and again when down shifting in the lower/slower gears it acts up.

What the heck could or would it be?

Bike is an 05.5 carbed 950 ADVenture.
30,000+ miles (valves check some 5k ago)
Stock clutch slave, fuel pump has been tweaked a bit a year or two ago...
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Old 06-29-2014, 07:11 PM   #2
Chuckracer
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Just a theory: Your shift lever is touching the sidestand on downshifts causing it to move slightly and the sidestand safety cut-out switch, over eager to save you from certain doom, is momentarily killing the engine.

Try either disabling the switch, or simply move the lever up one spline and ride it for a week like that, see if it still does it.
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Old 06-29-2014, 07:17 PM   #3
rubRsidedown OP
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Quote:
Originally Posted by Chuckracer View Post
Just a theory: Your shift lever is touching the sidestand on downshifts causing it to move slightly and the sidestand safety cut-out switch, over eager to save you from certain doom, is momentarily killing the engine.

Try either disabling the switch, or simply move the lever up one spline and ride it for a week like that, see if it still does it.
I NEVER thought of that one.
Honestly, I was THINKING it MIGHT be the slave cyl, not sure why I was thinking that but I will check into the safety switch tomorrow.

THank you!!!

I sure hope its that easy.
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Old 06-29-2014, 07:27 PM   #4
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Otherwise, engine cutting out causes are most of the time:

Wire cut in the loom that goes to the ignition switch

Worn out or dirty ignition switch contacts

Main relay and or corroded/loose connections around it.
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Old 06-29-2014, 07:29 PM   #5
rubRsidedown OP
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Quote:
Originally Posted by GrenDesb View Post
Otherwise, engine cutting out causes are most of the time:

Wire cut in the loom that goes to the ignition switch

Worn out or dirty ignition switch contacts

Main relay and or corroded/loose connections around it.
The weird thing is and I think Chuckracer hit the nail on the head is it's only in the lower gears.
We'll see tomorrow, I'll toss it on the bike lift and inspect it before adjusting it and report back.

Thanks for the tips guys.

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Old 06-29-2014, 08:52 PM   #6
Chuckracer
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Always start with the simple stuff and work your way in. You'll usually find the problem before resorting to major surgery.

An as example: I changed the jetting on my SW7 filter equipped bike yesterday - one step fatter on the mains - and rode it 60 miles or so, reserve light comes on. I didn't fill it last time I got gas, so I thought, "seems a little early but...ok".

Filled it.

Today the light comes on at 100 miles. I'm thinking, "no way did one step on the mains cut my mileage in half!". So...maybe the light is wrong?
I went to breakfast and pondered this...should I just top off again and ride it, seeing if it's huffing gas now? The Scot in me isn't keen on wasting money, so I didn't like that, plus if I decide to pull the carbs again, I'll be wrestling with a full gas tank...don't wanna do that. I could take it home (assuming I make it home) and drain the fuel, measuring what comes out but my only gas can has 2 stroke pre-mix in it.

On the way home it hit me: half the mileage equals half the gas...one tank...open the caps and look! Sure enough, one tank is full! Check the taps...one is closed!

Problem solved...simple stuff!
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Old 06-30-2014, 03:55 AM   #7
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Been there done that.

I THINK at one point or another every 950 owner has such a thing, it's a matter of them admitting that they did it that's all.
Good one.
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Old 06-30-2014, 05:18 AM   #8
Young-Gun
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simple things

Too true... a few weeks ago I fitted a recluse EXP 2.0 to my 05.5 950 and after that, every time I shifted up through the gears, the shifter would stick in the "up" position, I'd have to gently tap on it after shifting so that I could shift up into the next gear when it was time...

I rang around to a few bike shops asking if I'd unsettled something in the clutch or gearbox, funny thing is I got a range of quotes as high as "it'll cost you $800 just to open her up to have a look"

I was on a ride and a mate pointed out that the rekluse slave cylinder external adjusting nut was catching on the shifter just enough to hold it there... off it came, leatherman file to the shifter, 5mins later, problem solved... just did 1,200km this weekend without a drama
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Old 06-30-2014, 05:33 AM   #9
alongat
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Brilliant thinking - I don't care what anyone says about you Chuck, you're ok :)


Quote:
Originally Posted by Chuckracer View Post
Just a theory: Your shift lever is touching the sidestand on downshifts causing it to move slightly and the sidestand safety cut-out switch, over eager to save you from certain doom, is momentarily killing the engine.

Try either disabling the switch, or simply move the lever up one spline and ride it for a week like that, see if it still does it.
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Old 07-04-2014, 04:32 PM   #10
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Well its been a VERY busy week for me but today I FINALLY has some time to bypass my side stand safety switch but as luck would have it it's been raining since I finished, so I'm going to wait for the weather to turn before giving it a try.

I SURE hope that's it.
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Old 07-04-2014, 06:47 PM   #11
Chuckracer
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Heh...yeah, me too.
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Old 07-10-2014, 06:28 PM   #12
rubRsidedown OP
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***update***

Well since my first post on this issue and after bypassing the safety switch on the kick stand I have FINALLY given it a good test this afternoon.

Lots of rough tarmac and some so so dirt roads, bike NEVER stalled or acted up once.
SO, I would say Chuckracer hit the nail on the head and I CERTANLY owe him a beer.
Many thanks!!!

The 950 is STILL a hoot to ride after all these years and all them miles.
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Old 07-10-2014, 06:35 PM   #13
Chuckracer
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Every now and then I do get lucky.

You know how many times knowledgeable folks in the Orange Crush (950/990 Section of course) have bailed me out? Happy to pay it forward.
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Old 07-10-2014, 07:10 PM   #14
rubRsidedown OP
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Quote:
Originally Posted by Chuckracer View Post
Every now and then I do get lucky.

You know how many times knowledgeable folks in the Orange Crush (950/990 Section of course) have bailed me out? Happy to pay it forward.
Well some day I hope to be able to lend a hand as well.

Take care and ride safe.
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Old 07-10-2014, 07:23 PM   #15
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You gotta love this place!
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