WJBertrand
Ventura Highway
Doesn’t removing the sensors cause an error code?
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Jumpy Throttle fixed
- Thread starter Tremor38
- Start date
Cycledude
Well-Known Member
Seems like removing the sensors would cause issues but since the Flash dude is the one that recommended it maybe not ? Has the mpg changed any since removing the 02 sensors ?
Tenman
Well-Known Member
I might try this. My gen 1 has a surge at 2000rpm I hate. It's been flashed has headers and a pcv. The 2000rpm surge is a bitch at about 13 mph. Picking my way thru ruts and stuff is a PAIN with the surge.
Philb714
Active Member
Did you fix the stuttering Tenman?
Tenman
Well-Known Member
I Had adjusted my co2 up to something like 50 messing around a couple of years ago and forgot about it.I put it back to 8 and the urge is almost gone. Hardly noticeable only in first. My bike runs great. It just doesn't get very good mileage. I can stick my finger in my tail pipe and it's almost clean. Seems like it would be sooty if it was rich.
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gunslinger_006
Well-Known Member
If you had to disable all closed loop to address this, something was way wrong. Bad sensor or something.
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Onenoodles
Active Member
Well I have done Tremor 38's fix this morning on my Gen 1 ... wasn't too difficult and I am a proper sausage fingered muppet as soon as any tool is in my digits but I took my time ... if anyone tries it this was what I found ...
Did the 'hold the tank up with a rag and bungee' method (having remembered to free off the two pipes first ... well once I figured why it was not coming up easy
) ... once up I had a brew and 4 jammy dodgers and just looked at stuff ... the security screws are indeed a pain and I had no replacements so had to fiddle them back afterwards so more numb fingered swearing! ... also found I did not really need to remove the air box as I could get at the cover easy enough? ... then I cleaned everything off with contact cleaner even though I have no idea if that helps? ... then sprayed everything with GT85 and again no logic but seems that its moving parts so should do no harm? ... then it was 5 x 20 rapid movements (wife used to work away a lot so I have experince to fall back on) ... then everything went back. Took about an hour but I reckon now I could do it a lot quicker. Took it out and went around the city centre which previously would involve lots of little clutch slips to prevent looking like a kn*b head due to pogo antics ... and ... smooth as a babys bum!!!!!
How long it stays like that is anyones guess but I have my flash booked in at CJS in Bristol on the 14th and so if that helps and this helps and I maybe have to repeat every few weeks I can live with that. I have to say that on the short test ride it really made me love the S10 even more without the annoying throttle antics so just hope it lasts a while, fingers crossed!
Thanks Tremor
Did the 'hold the tank up with a rag and bungee' method (having remembered to free off the two pipes first ... well once I figured why it was not coming up easy
) ... once up I had a brew and 4 jammy dodgers and just looked at stuff ... the security screws are indeed a pain and I had no replacements so had to fiddle them back afterwards so more numb fingered swearing! ... also found I did not really need to remove the air box as I could get at the cover easy enough? ... then I cleaned everything off with contact cleaner even though I have no idea if that helps? ... then sprayed everything with GT85 and again no logic but seems that its moving parts so should do no harm? ... then it was 5 x 20 rapid movements (wife used to work away a lot so I have experince to fall back on) ... then everything went back. Took about an hour but I reckon now I could do it a lot quicker. Took it out and went around the city centre which previously would involve lots of little clutch slips to prevent looking like a kn*b head due to pogo antics ... and ... smooth as a babys bum!!!!!How long it stays like that is anyones guess but I have my flash booked in at CJS in Bristol on the 14th and so if that helps and this helps and I maybe have to repeat every few weeks I can live with that. I have to say that on the short test ride it really made me love the S10 even more without the annoying throttle antics so just hope it lasts a while, fingers crossed!
Thanks Tremor
PhilPhilippines
Well-Known Member
I've disabled the O2 sensor on my Husky. I just followed a thread and it seems to have worked. I have made quite a few other adjustments to cure fueling issues, stumble, etc though. Please delete or correct this if it is not helpful.
O2 sensors often fail I believe.
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Onenoodles
Active Member
Ok ... latest on my jerky throttle.
I did the fix as detailed by Tremor 38 and did a few miles to test it out and there was a vast improvement, then the next day took it out again and within about 50 miles the issue was back and just as bad as before ... seems like the self fix might only be a tempory fix and for me it was very tempory.
However, I was booked in with Chris Steedman at CJS Racing Bristol on the Monday so no big deal ... Chris did the remap and explained how Yamaha set the bike up so that fuel is cut off completely when shutting off the throttle (something to do with Euro regs) and then fuel is shot straight back in when the throttle is opened again ... and that can cause issues. He has a generic flash for Tenere's and inputs that and made tweaks to allow for my Arrow system, also disabled the 02 sensors (no error codes) and frees off the OEM restrictions in gears 1, 2 & 3. On the back to Worcester the bike certainly felt smoother, felt a little quicker in S mode in the first 3 gears and seemed much better.
I always thinks changes to a bike can seem great at first as a) you have paid out and so don't want to be disappointed and b) very often we do things because others do them and bikers are like lemmings and off the cliff we go!
So I waited until this morning when I was off work, got the bike out and did a much more thorough appraisal ride, Worcester through to Mid-Wales, over the tops in the valleys, down to Caerphilly and the M50 back home. This involved twistys, long fast stretches, slow crawls through traffic (which would have been a pogo fest before!) and around 150 miles covered.
Verdict ... massive, massive improvement in the bikes manners in traffic, no jerkiness whatsoever, completely smooth ... perfect tickover, smoother power delivery in general and so really pleased ... I think the increase in power is a perception thing? it feels like it is slightly quicker in S Mode but I might be imagining it or it may well be? Not the reason for me doing it though so not bothered about that, it was all about that bl*ody throttle and I am delighted to say that its nailed that for me ... that's my experience of the 'flash' thing and very happy
I did the fix as detailed by Tremor 38 and did a few miles to test it out and there was a vast improvement, then the next day took it out again and within about 50 miles the issue was back and just as bad as before ... seems like the self fix might only be a tempory fix and for me it was very tempory.
However, I was booked in with Chris Steedman at CJS Racing Bristol on the Monday so no big deal ... Chris did the remap and explained how Yamaha set the bike up so that fuel is cut off completely when shutting off the throttle (something to do with Euro regs) and then fuel is shot straight back in when the throttle is opened again ... and that can cause issues. He has a generic flash for Tenere's and inputs that and made tweaks to allow for my Arrow system, also disabled the 02 sensors (no error codes) and frees off the OEM restrictions in gears 1, 2 & 3. On the back to Worcester the bike certainly felt smoother, felt a little quicker in S mode in the first 3 gears and seemed much better.
I always thinks changes to a bike can seem great at first as a) you have paid out and so don't want to be disappointed and b) very often we do things because others do them and bikers are like lemmings and off the cliff we go!
So I waited until this morning when I was off work, got the bike out and did a much more thorough appraisal ride, Worcester through to Mid-Wales, over the tops in the valleys, down to Caerphilly and the M50 back home. This involved twistys, long fast stretches, slow crawls through traffic (which would have been a pogo fest before!) and around 150 miles covered.
Verdict ... massive, massive improvement in the bikes manners in traffic, no jerkiness whatsoever, completely smooth ... perfect tickover, smoother power delivery in general and so really pleased ... I think the increase in power is a perception thing? it feels like it is slightly quicker in S Mode but I might be imagining it or it may well be? Not the reason for me doing it though so not bothered about that, it was all about that bl*ody throttle and I am delighted to say that its nailed that for me ... that's my experience of the 'flash' thing and very happy
MattR
Well-Known Member
It’ll be smooth as silk once Chris at CJS has got his hands on it. Also, when you see the OEM fuel map readings you’ll understand why it was jerky in the first placeWell I have done Tremor 38's fix this morning on my Gen 1 ... wasn't too difficult and I am a proper sausage fingered muppet as soon as any tool is in my digits but I took my time ... if anyone tries it this was what I found ...
Did the 'hold the tank up with a rag and bungee' method (having remembered to free off the two pipes first ... well once I figured why it was not coming up easy
How long it stays like that is anyones guess but I have my flash booked in at CJS in Bristol on the 14th and so if that helps and this helps and I maybe have to repeat every few weeks I can live with that. I have to say that on the short test ride it really made me love the S10 even more without the annoying throttle antics so just hope it lasts a while, fingers crossed!
Thanks Tremor
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gunslinger_006
Well-Known Member
This. The oem map is a step function when it should be a sine wave.
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PhilPhilippines
Well-Known Member
All EFI engines cut to zero fuel on a closed throttle as far as I am aware, then resume as revs get to tickover. Great that you got it sorted though.
Onenoodles
Active Member
Had it done this week Matt and its all sorted now, really pleased.
Onenoodles
Active Member
Could well be mate ... he was explaining it to me but to be honest he might as well explained it to pigeon and that's an insult to our feathered friend
... but it was something to do with the way fuel is starved and then reintroduced and he has sorted it ... I had better go and apologise to someone perched on my fence!
PhilPhilippines
Well-Known Member
LOL maybe a tweet is better than pigeon post?Could well be mate ... he was explaining it to me but to be honest he might as well explained it to pigeon and that's an insult to our feathered friend
Onenoodles
Active Member
PhilPhilippines
Well-Known Member
Inspired by your post Squire. Made I laff!'a tweet'
My S10 started with an intermittent twitchy throttle at around 22k miles. This twitchiness was so bad at times as to make the bike unrideable. Couldn't hold a constant throttle position, especially at less than 10% throttle.
Anyway, to cut a long story short, I eventually replaced the TPS and it's now pretty much perfect. The throttle responds as I would expect. No twitching, surging or kangarooing. And I can hold a steady throttle at any speed.
Anyway, to cut a long story short, I eventually replaced the TPS and it's now pretty much perfect. The throttle responds as I would expect. No twitching, surging or kangarooing. And I can hold a steady throttle at any speed.
This is driving me insane… bike is jerky and totally unresponsive at times, to the point of being un rideable and dangerous. Has full arrow header and rear pipe. 70k miles.
Plan is to send the ecu off for a re flash? And change tps.
Any recommendations on getting the flash done guys. Based in uk.
Plan is to send the ecu off for a re flash? And change tps.
Any recommendations on getting the flash done guys. Based in uk.