Throttle position sensor
Posted November 15, 2008 - 05:58 PM
Ive looked at a couple of threads in this forum explaining how the TPS works but Im just not sure about one thing. From what I can understand, the TPS flicks between different advance maps for light and heavy throttle inputs, so what is happening when you hold steady throttle and why does it miss and splutter?
Posted November 17, 2008 - 02:48 PM
So what is happening at a steady throttle position, the CDI is trying to back the timing off as much as possible, causing the sputtering and occasional pop in the exhaust. A very laymans explanation I realize , but hopefully you get the idea. WR Dave
Posted November 18, 2008 - 08:29 AM
I'll tell you, this stuttering is the ONLY thing wrong with my WR and I get really frustrated at it. I have almost taken it out back and put it out of my misery.
I have some questions that maybe you, or someone else can answer. I am sure it will help out the original poster too.
I still have the stutter after unplugging the TPS, is it my Jetting that is causing the problem?
I have changed pilot jets, changed the turns out on my fuel screw and still can't get rid of the stutter. I figured by the throttle position when this stutter occurs it must be my pilot circuit but nothing I do seems to help. So should I try the needle next?
How bout I drop my bike off in Calgary and let you tune it?
Posted November 18, 2008 - 09:40 AM
Posted November 18, 2008 - 02:50 PM
Posted November 19, 2008 - 06:01 AM
Posted November 19, 2008 - 05:16 PM
Posted November 20, 2008 - 03:14 AM
Posted November 20, 2008 - 08:34 AM
had the same problem with my 01 426, i dropped the needle one clip (ie raise the circlip one notch to lower needle), this didn't solve the sputter compleatly but did make a huge differance.
Thanks DoctorChopper, I will try that this spring to see if it helps. To be honest any improvement will be appreciated.
My stuttering gets worse the warmer it is, so I think that means the bike is a bit on the rich side. So I'll lower the needle (by raising the clip) one notch.