Turning on heated grips jams the throttle!

[BigAlMacMac]

Both me and my dad have 1200GS and I have not had this problem.

He rarely uses the heated grips but last week in the cold he actually used the high setting for the first time.

This seemed to have some effect on the throttle return spring. The throttle just stayed open and he had to push it back down.

We stopped and he showed me and sure enough if you wound the throttle all the way round and took your hand off, it just stayed there.

Any ideas?

Could the heated element cause something to expand increasing friction sufficient to over power the spring?

 

[Womble]

It seems to be fairly common:
http://www.ukgser.com/forums/showthread.php?t=108384
http://www.ukgser.com/forums/showthread.php?t=17300

The fix seems to be a matter of either unscrewing the bar-end weight slightly, adding a washer, or moving the switchgear in a tad (just a bit more than a smidge).

 

[thornley]

This is the BMW patented cold weather cruise control system. Superb when you have cold and numb hands. Wide open throttle allows you to nod off on those long boring icy road trips

 

[Mallard]

I had this problem on my new 1200 as well. Sorted at first service by re-aligning/adjusting twist grip. No problem since.

 

[karnevil]

This is the BMW patented cold weather cruise control system. Superb when you have cold and numb hands. Wide open throttle allows you to nod off on those long boring icy road trips

OH WOW thats brilliant how do you get the throttle to stick?That means i can stay asleep on my commute to work






I thunk i need help.....................................................................

 

[thornley]

Duct tape is an excellent improvisation if your BMW doesn't have the patented cold weather cruise control fitted as standard. This wa a £300 extra I beleive but never really caught on due to a lack of repeat orders.

 

[Steve]

OH WOW thats brilliant how do you get the throttle to stick?

Just do the opposite of what's been suggested on this thread.

 

[Jonny_L]

Interesting, mine was doing something similar the other day, 2 bars of heat on. trouble is my throttle seemed to be returning ok, but the revs sat at about 3500rpm. A quick blip of the throttle and it was fine again. It did it a couple of times in traffic, then I parked up, didn't happen again. I wonder if that's what the problem was.

 

[theEnglishman]

Turning on the heated grips jams the throttle

Hey! - Mine does that too! Good old UKGSER knows about the problem and has the fix.





Now, what kind of washer? Stainless or galvanised. And if galvanised should it be hot dip or cold dip?

Or perhaps just spray some WD40 on a mild steel washer. Or should that be ACF50? Or a smear of grease? But what kind of grease? Moly? Red??

Oh - and does anyone know what the torque setting is for the bar end bolt

 

[Barfly]

Hey! - Mine does that too! Good old UKGSER knows about the problem and has the fix.

Now, what kind of washer? Stainless or galvanised. And if galvanised should it be hot dip or cold dip?

Or perhaps just spray some WD40 on a mild steel washer. Or should that be ACF50? Or a smear of grease? But what kind of grease? Moly? Red??

Oh - and does anyone know what the torque setting is for the bar end bolt

Oh yes, that sounds so like me! Point taken Englishman. The problem is I can't even do the quick fix! (see my thread of last week on cruise control). I love riding BMs (and have since I got my ST back in the early eighties) but I'm ashamed to say I am clueless over technical matters. The washer option just ended up with the throttle stuck without the heated grips being on. I then tried the next option and managed to move the mirror clap ) but could not work out how to release the switch gear. I'm useless... Any advice/thoughts?

 

[gavin@iow]

Oh yes, that sounds so like me! Point taken Englishman. The problem is I can't even do the quick fix! (see my thread of last week on cruise control). I love riding BMs (and have since I got my ST back in the early eighties) but I'm ashamed to say I am clueless over technical matters. The washer option just ended up with the throttle stuck without the heated grips being on. I then tried the next option and managed to move the mirror clap ) but could not work out how to release the switch gear. I'm useless... Any advice/thoughts?

Switches are held in place with screws, much the same as other bikes, i've had mine apart, it's easy enough.

 

[theEnglishman]

Any advice/thoughts?

He he he.

A quick chat in the local dealers had me sorted - I didn't have time to pfaff ('cos I do no matter what the job is ) 5 mins later and I'm out into the pouring rain and 'hot hands' happy.

Apparently they slide the switch stuff up a millimetre or so. High tech stuff, apparently

 

[bisbee]

I had this happen today I'd never heard of it before Managed to hit the kill switch and coast in before it redlined! Don't suppose the thunderstorm I was in helped

 

[Bendy toy]

The throttle side switch block is held by a clamp. Remove the cover at front (under brake lever) and you'll see the bright zinc plated torx head screw.
On a secondary note it's a shame the clutch side is crudely bolted to the handlebar.

 

[bisbee]

The throttle side switch block is held by a clamp. Remove the cover at front (under brake lever) and you'll see the bright zinc plated torx head screw.
On a secondary note it's a shame the clutch side is crudely bolted to the handlebar.

Thanks Bendy It's on my to do list for tomorrow after I clean all the shite off it from today's muddy roads ...ferkin farmers