Hmm, sorry but I'm a little confused. 1 thread says adjust it just to the top line when the bike is warm and idling and one says adjust it just to the top line when the bikes cold and off.

Which is best?

 

When its idling worked for me.

 

EDIT: The torx head screw driver isn't the same as a regular star bit correct?

 

No. You need a #25 TAMPER PROOF torx bit. It looks like a star bit, but with a hole in the middle of it.

 

only reason why i went cold/off was that its worst case for lowest 5v reference voltage at the sensor.

 

Well, did mine and its a whole different beast. Thanks to the OP.

You can tell its getting a little too much fuel at low speeds but its worth it for the smoothness everywhere else.

 

I have been waiting for a mod like this that did not require me to take half the bike apart. So I figured what the heck. This is just what I was looking for. I have put about a hundred miles on the bike, both on the highway and a lot of in town riding. SOOOOOO much better. Now I have to break the habits I started when it was jerking around. Maybe this should be moved to a sticky so more people can try it. The line was in the middle and I moved to the top position. Now this bike rocks like it is supposed to.

 

Does someone have a picture of what the - looks like on the cluster when I am doing this? Like before and after adjustment pics.

 

 

View attachment 81320

forgive me for being thick, but am i correct in thinkiing, you turn the idle screw until the _ is sitting in the middle position? does this have to be in dealer mode (with the connectors jumped) for this to be acheived,

 

After some reading I realize that I have been riding around the HJ and never noticed it until it was mentioned here. My bike is still relatively newn only 205 miles on it. Should I wait til the full break-in period? Or just do it? Im afraid it will void the warranty.

Before you guys start getting on me for not riding enough, I had to pick up a second job to pay for the bike, so I havent really had that much time to ride. Just to get it out of that out of the way.

 

ok boys and girls i just received word that a bunch of yamaha owners filed a complaint with the NHTSA (NATIONAL HIGHWAY TRANSIT SAFETY ASSOCIATION) not only were they responded to almost immed. but when enough people complained they actually forced yamaha to recall the part. so i went to the site it took 45 seconds to file my complaint.
here's the link
http://www-odi.nhtsa.dot.gov/ivoq/
click on vehicle then
click on continue with vehicle complaint
have your vin. # ready.
here's what i wrote;
problem has been labled the Herky Jerkies. while riding at any rpm when the rear wheel speed matches engine speed the throttle shuts off abruptly with no warning, throwing you forward overloading the front wheel. when the wheel slows enough that the ecu calls for fuel it delivers a large amount of fuel and the bike jerks forward unloading the front wheel causing an unrecoverable front wheel slide (while leaned over in a turn). there is a large amount of people including myself working on the problem, we have discovered ways to mask the problem but no resolution to date. suzuki has received many complaints and is not doing anything about it. I have called in numerous times starting some time around march. i have been working with people on gixxer.com it's a forum for gsx r owners and there are many threads concerning this issue. I / we are hoping that your organization will be able to solicit a response from suzuki, seeing as though they are ignoring us.


obviously we need a better spokes person. perhaps someone who can spell but anyway it's time for us to get organized and hold suzuki responsible.
please paste this in any and all threads that pertain to the herky jerkies and get everyone you know to file with the nhtsa

 

Good idea bro!

I would say to start a new thread with this info so everyone see's it that has the issue. Having it in here isnt gonna do anything as many will not see it.

unk

 

Thank you...thank you...MF'ing thank you. I love my bike other than this problem. When it happens I know it and want to kick my bike. But after a few power off and ons it went away. I adjusted it it to the high mark today and it is running exactly as I want it to. Great write up and pics. :cheers

 

Oh for Christ's sake. Lets start another HJ thread.:woot

 

Man....I recently had a very unexplained crash on the 405 freewayon the way to work. I was riding in a straight line, but the freeway I ride on has lots of ramps and bumps...I wonder if somehow the herky jerkies threw me off...coz I know I didn't see or hit an obstacle...nobody was near me....and nothing flew at me from what I can tell....and the tires were fine...no engine seizure. What I am thinking is maybe I hit some magic combination on one of the bumps where the herky got really bad and caused my bike to lowside suddenly...like, no chance to save it and there I was sliding like Superman behing the sparking bike.

It was the weirdest crash ever, and I still don't know what happened...but I've taken this freeway for almost 3 years on an R1 and even run over stuff pipes and a balled up length of chain...kept it up...ridden this same route on an SV and a Kawasaki 650R.....but for some reason I crashed on my 07 Gixx 6 in a straight line after hitting a slight bump/ramp on the uber craptastic 405 in Southern California, southbound at Victory in the carpool lane.

I do sometimes feel the engine stuttering here and there after hitting these bumps at freeway speeds....and I get the herkies BAD from time to time..which is why I am here at Gixxer.com searching these threads. I am sooo doing this TPS adjustment soon as I get my hands on the tamper-proof Torx wrench.

Man....cost my insurance $5300 to get the bike fixed....and dinged my perfect driving record too coz I got charged at-fault in an accident which I still don't feel came as a result of rider error.

Oh well....I am starting to think the herk could have contributed to this accident...especially with the 405 being as bumpy/rampy as it is. Either way..I am very glad there seems to be a fix for this. Huge thanks to those who put in the effort to diagnose, test and verify this problem...and to those who are contributing to these threads.

 

Oh great, now look. Every crash will be blamed on the HJ. Next will come "should I sue Suzuki?":shifty












:biggrin

 

My crash was so bizarre, so unexplained....straight line, no objects to hit, no cars near me, a route I've taken every work day for almost 3 years....all I am saying is that it's a possibility.

If I didn't consider the HJ and it *was* the cause, that'd be kinda stupid. You also have to understand that the freeway I ride is a freakin' stunt show with how bumpy and rampy it is. The Gixx throttle response is hit and miss....so who knows if it caused the sudden lowside I had in a straight line....all I know is there's currently no other explanation for it...it felt like the front end got suddenly loaded up and the bike lowsided and slide ahead of me with me sliding behind it.

I am not really looking to sue tho....I just want this problem fixed since my bike's already been repaired and I certainly don't want the HJ contributing to crashes in the future.

 

I just got back from TWS and tried this method for fixing the HJ. It helped SO much, no more jerky decel.

I started getting these symptoms at about 7000miles, I am now at 14,000 and the problem has magnified at least 2x.

I bought my T25 Tamper Proof Torx Bit from the local NAPA store.
I tried AutoZone, Lowes, Honda Dealer, and the Suzuki Dealer without any luck.

When I put the bike into dealer mode the display was on -COO, i moved the sensor up just right when the line goes (TOP)COO, not all the way, just enough to make the sensor reading move up. The bike feels GREAT now, i can finally decel into corners without worrying about the bike jerking around and losing the front/rear end. I didn't notice any backfire issues or richness issues, but I don't have a Wideband to watch. The bike was smooth as butter!

 

I just adjusted my TPS a few days ago. My was already on the top line, but I still had some HJ issues. Now she's super smooth, it feels like a whole new bike!

 

Just made the adjustment after riding it for two years........worth every min spent doing it......much much better throttle response, less engine braking, and the ass dyno gives it two:thumbup

 

I wanna adjust the TPS... I dont have the Herky jerky problem but I wanted to see if it will make the throttle smoother or anything...


Without the engine running, the TPS is in the top position sometimes juggling to the the middle position

with the engine running.... it moves from the top position and goes back to middle without juggling.

-------

what am i supposed to do?... which result matters more?... the one with the engine running or without the engine running?

 

I adjusted mine on the weekend using a voltmeter to 1.130v but that has put my dash on the lowest line and now it's running like a dog.

 

Cool I'm going to try this fix.

 

you people with herky jerky don't happen to start the bike with a blip of the throttle do you?" I just noticed today, I accidently hit the kill switch halfway riding, flipped it back on with the throttle on, after that the FI light was on and herky jerky. turning key on and off didn't do any good had to come to a stop and restart bike with throttle off.
The ECU may be calibrating the throttle based on starting position, if you have the throttle cranked while starting it may throw the calibration off. Just a theory.

 

No, and the H/J doesn't normally cause the FI warning to come on.

 

I did this adjustment a couple of months ago and the bike is much nicer to ride now. I just barely tweaked the TPS until the bar flipped to the top position. That small adjustment did the trick.

 

:lol


I guess I didnt even see he said idle screw. I only answered the other 2 questions.:dunno

 

done it, but i'm buggered if i notice any difference tbh! however it's idling around 1900 and not the 1200/1300 as per manual, how do i reduce this now?