Bandit feels like it is surging?

Hi there, I purchased a 2008 1250 Bandit-S about six weeks ago and love it!!!! But have noticed that the bike feels like it is surging. And if you slowly rev the bike whilst not moving the tacho needle wavers. I have done the throttle position sensor adjustment, as well as ballanced the throttle bodies as described in the forum.
The info you all have is fantastic and has been great, so if anyone has info that could help it would be much appreciated. Thanks Michael

This will open can of worms............................
I'll stay silent however

No bugger it I cant keep quiet!
How many K's? What mods? Cold/hot? What fuel? Noticed it under load? What PM?

About 7000km , no mods, hot or cold, BP ultima premium, no it's fine under load it is noticable when cruising revs. Sorry what is PM?

While you are not moving and reving it my bandit doesnt rev smooth eather and the tacho does move around slighty. i put that down to the o2 sensor adjusting the ratio of fuel/air.

while riding tho

if you have down both the tps and balance correctly i would be looking at a clogged fuel filter or clogged air filter but it still has me a bit puzzled that its fine once you accelerate

see what the rest have to say


Holdenman

There are a few reasons the bandit will do what you describe

The most probable in my mind is something that does not effect all bandits, but it does effect some and hence the can of worms thing 2WA has mentioned. There are some that say it is one thing, and others that say it is something else.
I have personally seen it on 3 bikes so far and from my experience of those bikes the getto fix is free and easy and works without causing other problems.
To see if what has caused your bike to do what you describe is like what I have seen, disconnect the GPS and go for a ride to replicate the situation.
This isn't the solution, just the "see if it is" bit.

It comes with a warning tho. Your bike will think it is in 6th gear AT ALL TIMES regardless of physical gear selected, including neutral so if your stand switch is touchy or you put the stand down, the engine will stop.
You must take care when releasing the clutch lever if you think you are in neutral as NO neutral (green) light will illuminate.

Let us know how you go and if it's not the problem we can further diagnose and help out.

Thank you for your help so far. dhula, where do I find the GPS to disconnect?

2wheelsagain wrote:This will open can of worms............................
I'll stay silent however

No bugger it I cant keep quiet!
How many K's? What mods? Cold/hot? What fuel? Noticed it under load? What PM?

Where did my R go? RPM

To add to the can of worms run 91 fuel but good quality 91 (Mobil, PB, Caltex, Shell) and the occasional tank of 98 to clean the system.

Between 2500 to 3500rpm. Thanks.

Michael wrote:Between 2500 to 3500rpm. Thanks.

I've found mine does this slightly below 3000 rpm so I just ride it above 3000 rpm. Problem fixed

Mine runs brilliantly , never had a problem it's fantastically smooth and responsive. It's not necessary to thank me for the help

Saikhan wrote:Mine runs brilliantly , never had a problem it's fantastically smooth and responsive. It's not necessary to thank me for the help

WARNING: This man is a trouble maker.

Reardo wrote:

Saikhan wrote:Mine runs brilliantly , never had a problem it's fantastically smooth and responsive. It's not necessary to thank me for the help

WARNING: This man is a trouble maker.

20,500km here and happy as a pig in sh!t
Can I be a trouble maker too

2wheelsagain wrote:

Reardo wrote:

Saikhan wrote:Mine runs brilliantly , never had a problem it's fantastically smooth and responsive. It's not necessary to thank me for the help

WARNING: This man is a trouble maker.

20,500km here and happy as a pig in sh!t
Can I be a trouble maker too

NO. Sorry mate, your just to nice

I have taken the side cover off on the gear selector side, and followed the wires that run off the large sensor where the shaft goes into the box and disconnected the white triangular plug up near the fuse box near the battery. Is this the correct one to disconnect the gear position sensor???

Yep, thats the one the atre piggy backs onto.