My bike had both surging and choppy throttle problems when I first got it. After joining the list and learning about setting the "pots" at 1 o'clock it was much better.
Also, with learning the peculiarities of the bike and how to ride it, it is much better. In fact the only thing I really notice now is the abruptness of the throttle at low parking lot speeds. I watch for it now and it doesn't bother me anymore. Grant Gall Derek Baylor wrote: > I have ridden a friend's BMW R1100RT, and that bike had what I would > describe as "classic" surging: the bike not holding a set throttle response > (wandering) while the rider holds the throttle steady. My GTS does not do > this, but does have what I would describe as "choppy throttle", the abrupt > on/off behavior that we were talking about. Do the '93s have "classic > surging" and "choppy throttle"? > > I think many early FI bikes do have the same problem as mine. However, I > will endevor to check all my settings and then mess around with the TPS to > try and fix the abruptness thing. > > Derek, '94 > [EMAIL PROTECTED] > > ----- Original Message ----- > From: "Loss, Joe" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, October 08, 2001 3:10 PM > Subject: Re: TPS and FI relationship > > > Wait a minute...I asked this question a while back, describing exactly the > > same thing and I was told that no, the surging is (as I would imagine the > > name implies) you are holding the throttle constant and the revs are > > increasing or decreasing. I have that initial hesitation upon gently > rolling > > on the throttle from low revs and from what I've read this is fairly > common > > on a lot of FI motorcycles. What happens is you roll the throttle on a > > little to where you normally would expect a gentle response, nothing > > happens, you roll a fraction more, nothing happens, then a fraction more > and > > it takes off. Until you get used to the throttle control you often tend to > > roll on too quickly after the initial hesitation causing the bike to lunge > > forward. I don't consider it to be a significant annoyance now that I'm > > familiar with it and I couldn't really imagine anyone getting as bothered > > over it as many on the list seem to be, unless it were true "surging". So > > what is it?...surging or hesitation?...will someone with bad surging > please > > describe the symptoms again in detail... > > > > Joe. > > > > -----Original Message----- > > From: Burton, Bob [mailto:[EMAIL PROTECTED]] > > Sent: Monday, October 08, 2001 12:32 PM > > To: [EMAIL PROTECTED] > > Subject: Re: TPS and FI relationship > > > > > > What you describe at very low rpms (~2k rpm in my case) rolling on the > > throttle (not abruptly however) in very small increments and getting a > > bit of "bucking bronco" effect is what I'm calling the surging. It's > > only this way on my bike. I have none of this effect rolling off the > > throttle or at other rpm ranges, only maintaining a low speed (at a > > certain rpm ~2K) or very slight increase into the "surge" rpm. Chain > > tension can make it worse as you said. Once lower or higher than the > > "surge" rpm mine's fine, it only occurs in the one spot. It's really not > > that bad, just annoying when caught in very slow moving traffic, usually > > I just upshift a gear to drop the rpms. As RSRBOB has said though there > > are many factors, many sensors and settings. Some have recently found > > that adjusting the TPS has made it better or moved it to a more > > desireable rpm area. If you want to play with the TPS to see what > > happens, just measure it before you change it so you can always go back > > to the original setting. Try it a bit higher and a bit lower and note > > the differences, then adjust it for the best overall effect. That seems > > to be what a few have done, but most of them seem to describe a much > > worse "bucking bronco" effect on their bikes before adjusting the TPS > > than I have on mine. I'll probably leave mine alone since it's not > > really that bad, but measure the TPS just for a base line and to have a > > record of it. > > > > Bob B. > > '93 GTS #340 > > > > -----Original Message----- > > From: Derek Baylor [ mailto:[EMAIL PROTECTED] > > <mailto:[EMAIL PROTECTED]> ] > > Sent: Monday, October 08, 2001 11:55 AM > > To: [EMAIL PROTECTED] > > Subject: Re: TPS and FI relationship > > > > > > As an owner of one of the more refined '94s, I'd like to know a little > > more about this whole surging thing. Is the surging you describe > > present at steady thottle, or during throttle transitions? My bike > > exhibits what I would desribe as "abrupt" throttle response, especially > > when rolling on or off the gas at low rmps. Sometimes this "on-off" > > throttle response will lead to a kind of bucking bronco effect as I try > > to give it gas smoothly at low speed, but it's also present and > > disruptive while cornering at higher speed and rpm. I'm very careful > > about chain tension, I know that a loose chain can exacerbate the > > problem. I've learned to live with this quirk, but would love to see it > > gone if possible. Would messing with my TPS or injector sync. help this > > condition, or just leave me open to making it worse? > > > > -Derek > > [EMAIL PROTECTED] > > > > > ============================================================================ > ================ > > NOTICE - This communication may contain confidential and privileged > information that is for the sole use of the intended recipient. Any > viewing, copying or distribution of, or reliance on this message by > unintended recipients is strictly prohibited. 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