Could my TPS be rooted? Or am I just F*CKED in the head?

[brimo]

Yep wise to take a look at the cable routing, seems like all the cables and lines on mine are "just" long enough, had to do a bit of fiddling when I put the bar risers on, cut a few cable ties and spin the banjo fittings to get some slack in the lines and cables.
On bike cables and lines when it comes to securing them with ties etc less is more, as the cables need to move freely around the front triple and tight radius bends will give you grief as well.
Also in the olden days a bit of cable lube down the cables would help too.
Apologies if this sounds patronising but this also goes back to the old KISS system, check the simple things first before leaping to conclusions about checking and or replacing more complicated (and expensive) items.

[Six95]

YEP, Happens to me when I turn hard left - only a 100-200rpm. Everything is OEM on my bike. I noticed it a few months back, but just let it go as I did not think it would be a problem. Might have a look at the cable routing before the ride on Saturday.

[Super T.I.B]

Apologies if this sounds patronising but this also goes back to the old KISS system, check the simple things first before leaping to conclusions about checking and or replacing more complicated (and expensive) items.

Yeah, thanks. 

I didn't think now, DID I!

I did however do some research before posting, about a weeks worth before posting and even noticed the revs going up when the bars were straight. That was after making a hard left I realised later. The bike has been a little temperamental lately and I just thought the worst.

Right Brimo, how about I change the thread title. 


 

[Betty]

Maybe take your baby back to Frasers & say their repair work has buggered up your bike.

Just out of interest: had you noticed it before your 'incidient'?

[Super T.I.B]

Maybe take your baby back to Frasers & say their repair work has buggered up your bike.

Just out of interest: had you noticed it before your 'incidient'?

From what I can remember, I don't think I noticed it.

When I initially put the SM bars on, routing the cable/s was a pain in the arse, but it was only the brake line that was giving me grief (I think). I didn't want to loosen the banjo and have brake fluid dripping everywhere so I just persisted and managed to route the line around the cluster.

I'll see if I've got a pic of when I first installed the SM bars and what it looks like now.

[ellingly]

Question then: How many of you people who's seen this problem are running stock bars? When I looked at Melvins, I assumed the clipons had something to do with it - that there _was_ a "correct" cable routing that wouldn't exhibit this problem, but that when he got the clipons fitted the new routing was a little too tight. Is this also happening with stock, factory delivered bikes?

curious-big

There have been three times, in the entire life of the bike, where my S2R1k (with stock bars and a properly adjusted throttle cable - i.e. with the right amount of free-play at both the butterfly and the grip ends) will shoot up to nearly 3k. All three times that it has happened is when the bike has decided to surge like a bastard when sitting at the traffic lights, so I shut it off then restart. About 10 seconds after that, for which time it has idled at the factory proper 1200 rpm, it'll rev up to nearly 3k for about 5-10 seconds, then drop back and idle a bit low. Have not experienced since I unplugged the O2 sensor, oh, about 9000 km ago.

Switching the bike off and on stops the surging cause it puts it into start mode & ignores the sensor enough that it doesn't get cranky, but obviously it decides it needs to try the full range of the idle stepper motor, without actually bothering to try anything intermediate...

[brimo]

edit
Right Brimo, how about I change the thread title. 


 

Well sorry, no offence meant, seems like I'm doin' well at pissing a few people off today, that said, my comment was meant generally, not to you specifically. As a service tech, I fix broken shit every day and have been guilty of breaking that same  golden rule myself so let's have a beer and make up. 

[Super T.I.B]

Well sorry, no offence meant, seems like I'm doin' well at pissing a few people off today, that said, my comment was meant generally, not to you specifically. As a service tech, I fix broken shit every day and have been guilty of breaking that same  golden rule myself so let's have a beer and make up. 

Just joking with ya Brimo, I know what you meant. 

[Super T.I.B]

A little update,

I had a look yesterday and noticed the fast idle cable was up over the instrument cluster bolt.

I pushed it back down in front of the cluster and what do you know, doesn't happen anymore.

But it keeps snaking it's way back up so will have to cable tie it down.

[brimo]

On the swinging around of the banjo fittings idea, you can loosen them off a bit and move them around, the seal will keep the fluid in as it's not under pressure at the time. You can keep a rag handy just in case.

[loony888]

mr s4r exhibited the symptoms described by super, and after adjusting the cable, and lubing it and making sure the bars didn't tug or foul the cable and the throttle returned after a twist, my dealer pulled the TPS and replaced it and the problem was gone. it was a while ago so the exact details are a bit vague but i remember the tech pulling it apart and there was a spring steel coil inside, like the old temp operated choke on old webers. and that was binding up causing it to "stick".


paul