brand new xt66r problem
 

my xt is one month old and since new has had a problem, on steady throttle it jerks kinda like fuel problem or the break is being applied on and off. i decided to wait until its first 1k service but they told me it was normal and was something to do with pollution levels. this does not sound true to me, i cant believe i now have to go jerking around roundabouts etc because of co2 levels.
anyone else had this problem, does this sound true to anyone ? thanks dan w

Firstly :hismiley: :welcome: to :660: :family:

As to your surging etc - it is well documented and if you click on the multi-coloured Mods link in my signature below you will find a number of ways to reduce the problem.

Welcome to the forum mate.:bigwink:

You say you have a new XTR is it a 2008 model with O2 sensor on the left hand exhast pipe?

motonacio, thanks buddy for a reply, i am going to try the co2, really dont understand why yamaha can sell a bike new that jerks, going around roundabouts in the wet cant be safe when the bike is jerking. lets be honest a brand new bike should be smooth as silk.
thanks again for the reply, i will let you know how the co2 change goes.

hi kev, yes 2008 with sensor,

Yes they do surge, at the moment there is no positive fix. It is due to emission control, they run the motor lean on the closed loop circuit of the oxygen sensor when you are on the cruise & it surges. Try up your CO1 by 5 to 10 this may help in the short term. The CO2 setting will not adjust the fueling only the CO1 setting will work.

Step 1. Before turning the ignition on press and hold Select and Reset buttons, turn the ignition on and keep holding both buttons until you see the Diag screen appear.

Step 2. Press Select once to toggle to the CO MODE

Step 3. Press both Select and Reset together. Hold for about 3 seconds to enter co mode. The number displayed is the cylinder selected (genereric computer for all Yamahas) You need to select 1, Press select to scroll up and Reset to scroll down.

Step 4. Press both Select and Reset simultaneousley for a few seconds to see the setting for the selected cylinder. This number will be different on every bike and has no relationship to the mixture its just a number it can range from -128 to +128. Write down the number and keep it in a safe place in case you need to return to your original settings.

Step 5. Pressing select will increase the value (richen the mixture), pressing Reset will decrease it.


I have a fuel mod made right now for the 07 onwards XT's. It is just waiting for me to finish off the O2 simulator which should be ready in a months time hopefully. I am not able to ride my bike at the moment due to my leg being in a brace. I should be able to ride in 2 weeks time so testing will be done then & hopefully we will stop the 07 & 08 XTX/R from surging.

ok great thanks kev, will try the co1 setting as above, hope your leg gets better quick, thanks again mate

:hello: and :welcome: to :660:

good luck with your surging problem, you know you will get help resolving it here in this forum but for any further assistance please click on the 2nd part of my signature re XT Supporter scheme which will entitle you to one-2-one assistance.

Cheers

Good luck with the surging problem
Why not pop a post in the newbies section to introduce yourself so we can welcome you properly, maybe some pics too

Sorry to hi-jack the thread guys but my 08 XTR runs better with the standard settings.I adjusted the Co +5 and then +10...it made it worse,so i returned it to standard and that was the best.

Cheers,Andy C.

hi andy c, i have to agree with you as i too have re set from original setting of 9 to 15 then 25 then 35 and last 40 but its made no difference, im gonna try going - setting and see what happens, im kindda surprised that yamaha are putting bikes out that surge although my mate just got a brand new ktm and it does exactly the same. will keep ya posted.

ok so i went from setting 9 to +100 and everything in between and down to -30 and everything in between and i didnt notice any difference. ive gone back to +9 (original setting) should i try the throttle sensor angle or should i just take it back to the shop and put it on them ??

Dannyw please try these two things: one you said it already is to adjust the throttle position angle and the other is to increase the idleing speed between 1450 to 1500 rpm. Don't worry this only affects low regimes, and will make no difference when you get going over 10mph but it will help your bike keep a decent level of acceleration when you pootle about or downshift gears.

If the problem persist then by all means take it back to Yamaha and threaten them by demanding either a full refund or a bike that runs smooth. We are aware that there are a very limited number of xt bikes within the 07-08 range that are just tuned imperfectly and as a result have proven impossible to rectify, Kev had one of those himself. However he managed to obtain a new ECU and after that things have improved a lot.

Good luck and let us know how you got on.

Hmm, I to have a brand new 2008r (900km) and actually I just thought it was me being used to the drivingschoolbikes and that the XT always behaves like this :D It feels almost like it never gets warm or something.

My bike is nearly impossible to run here in the city where the speedlimit is 30-50 km/h. Only way I can go smooth is to use high gears and no throttle or else it keeps jerking around making me almost jump around.

Bike is goin in for first service next week and I will see what they say about it.

I also have an 07-xtx with surging and cutting out problems and if i was you i would take it back to the dealer now and tell them to sort the problem or replace the bike for one that does not surge.
The longer you leave it the less they will be interested to sort your problem,I am still argueing with yamaha uk over mine now and don`t seem to be getting anywhere,The bike should never be put on the road running like this.
Andy

ok i took it back today and they are going to try and fix it next friday, i was amazed at how they really tried to convince me it was normal and i should not be bothered, really strange that they would think that someone would just except that a brand new bike should act this way, i even had to mention my lawyer, does anyone actually know where yamaha legally stand on this? im sure they are libel to make the bike work correctly no ?

absolutely! If you as a rider consider it a danger to your health and safety, then you can start quoting risk assessement and all that blx... :rotf[1]:

Not sure how far you'll get under Spanish Law - they tend to take caveat emptor VERY seriously.:thumbleweed:

Hi Guys, I too have an '07 XTX which shows the same symptoms at roundabouts/corners etc. I wouldn't say it was dangerous but I did feel like a bit of an idiot the first couple of times. It made me look like an amateur rider even though I've been riding bikes for 20 odd years. I've only had the bike about a month and have got a bit more used to the throttle although every now and again surging still happens. Perhaps it is something I'll get better at? Or as I have still a year on my Yamaha warranty could I possibly take this up with them?

what is caveat emptor ?

Let the buyer beware. It is legal jargon meaning you take responsibility for your own (trans)action and accept the consequences having entered into a contract freely.

take it back if your not happy i wish i had taken mine back when i first got the bike,It is great to ride when your giving it some on fast roads but around town it`s the worse bike i have ever rode(crap) and should never be sold like it which is a pitty realy because it could be so good if it ran right.
Andy

Hi guys,i've got an 08 XTR with race cans and K&N filters,also XTX wheels.
You said that it runs better with standard settings,have you got any mods fitted?
It's much better with the mods i've done but still jerks when going around roundabouts,no fun in the wet.Any body else fiddled with the mixture and how did she run after?Thanks,Chris.

surging
 

My 07 XT660X surges a lot, but having read all about this problem before I bought the bike I was expecting it to do so. It is around the 30MPH mark its at its worst, the speed is to high for second gear and too low for third, worse if the traffic is busy and keeps going from 25MPH to 30MPH all the time with no way for over taking. For mini round-a-bouts I use the clutch to smooth it out. Must admit I quite like the surging, makes the bike feel a little wild :-)

Jason

Hi mate don't listen to the dealers crap take it back..... tell them that Yamaha will replace the ECU under warranty. Do not mess with the Co2 settings as this will only make the bike worse but never better. Had the same prob myself ECU replaced and turned the bike into a proper hooligan like it should be!

As an XTZ owner I am glad I havnt suffered these problems. But I think its crazy that Yamaha can get away with this. Yamaha Dealers seem to be under the impression we are all thick. I have had this attitude before from delears and I think its a real shame. I bought my bike from Tamworth but will get it surviced at Alf England as they seem to have a good reputation.

off the topic a bit...sorry...you are right...think all Yamaha dealers go to same school...they do think we are thick...very fast and smooth when it comes to selling the bike...when something goes wrong, or they get chance to rip you off, they are just as "smooth"...

Hi there, new member here from Zurich. I haven't got a bike yet but have my heart set on a XTR - a cheaper alternative to a KTM 690 enduro. But I am a little worried about this surging issue. Is it all bikes suffering from this to a larger or smaller extend, or is it only a few?

:hello: and :welcome: to :660:

I wouldn't want to lie to you but, the surging issue is a characteristic of these bikes, however there are a number of them which do not soffer this problem at all.

The latest production engines as fitted in the Tenere have totally new remapped ECU which has shown ZERO surging. We hope same mapping will be applied to the new 09 XTX/XTR models, however, even a little surging can be tweaked to a near optimum result, and you will find all these tips in this forum amongst our technical threads.

All I can say to you is go and try one and see if you like it.

Good luck

xtx 660 surging
 

I had a power commander fitted and its as good as you will ever get from a big lump. It is nice to ride now at slower steady speeds and wicked when opened up. Cost me �495 fitted and dyno set. Splint.xtxxxx660.

surging fix
 

maybe this is not the bike for you. my new 660x surges a bit if i'm dithering about. use a bit of clutch and throttle control, nail it and the surging is cured, i love this bike.

'Evening CaptMoto
As a relative newcomer to XT660.com I've just picked up this thread re surging XT660s.
In April of this year I bought a new '09 XTR660 and haven't suffered any of the problems other seem to have.
I've covered about 3000 miles from purchase, with about half that mileage clocked touring Scotland and the Highlands laden with panniers in July '09, encountering all types of weather and traffic conditions.
I guess the engine on mine must be one of the latest with re-mapped ECU (as the Tenere), but it would certainly make sense for the XTX, XTR and XTZ to share identical settings etc, wouldn't it?
I bought mine from Webb's of Eye (Peterborough), and have to say that their service and attitude has been faultless in every respect.
On another, totally unrelated matter...
I'm planning to ride up to Nordkapp (Norway) in spring 2010: initial route mapping suggests I'll be covering about 4,000 miles on the journey.
As I'm not a hard rider does anyone know - realistically - how many miles the 'stock' Metzeler Tourance tyres and chain/sprockets are likely to last treated gently?
I'm trying to second-guess whether I should replace those items before the journey... or whether they'll last.
Grateful for any feedback

You can expect 4000 miles out the tires but the sprocket and chain will depend on the terrain i.e. how rough or smooth, in town sprocket and chain can last up to 7500 miles.

Front should last about 10-11k miles
Rear about 5-6k miles
Chain and sprockets should last 15-20kmiles depending on oilling times etc.

Very jealous of your trip to Norway:icon_cherry: cant wait untill my next big trip.

Thanks for the info guys.
Roll-on spring 2010!

My 2006 XTR (TPS replaced under recall) has always had the low speed fueling glich. tried increasing the CO value made no difference except for a smell of petrol after a ride. On the advice of a respected spanner on another forum I tried lowering the value...hey it improved...the only detriment, more popping from the exhaust on overrun (which you might expext)
Running at -10 from standard setting. Used every day for city commuting...i'm happy

Most run between -10 to +30.

i got my xt in late june 2012 and it has this surging prob. going back in to the deler wednesday..if no prob im going to tell them its not fit for use and replas it or money back..will let you all now the out come