muleskinner
Turbocharged
Yes a stepper motor make way more sense. That could physically hold the throttle shaft open.
Triple Trouble
The Duk of death
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It's still likely that a bad TPS is somehow causing the stepper motor to act up IMO.
Dennsell
Top Fuel
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My 2CW. on a bike this age..and you ride in all weathers
Throttle cables could be dry or worn or frayed,
Throttle body linkages could need lubing, I use silicone spray.
possible TPS as mentioned, stepper motor actuator or linkage return spring.
Lift the tank and check maybe.
Just my thoughts
Throttle cables could be dry or worn or frayed,
Throttle body linkages could need lubing, I use silicone spray.
possible TPS as mentioned, stepper motor actuator or linkage return spring.
Lift the tank and check maybe.
Just my thoughts
Battersea
Turbocharged
It goes beyond 2007, my Sep 2009 had to have one - done on warranty when 30 months old. My symptom was high idle; 1800 to 2000rpm.
Once the throttle cables have been ruled out of the equation, the TPS will be the next culprit.
The ECU has several sensors in the injection system to feed it info on certain parameters like Temp,(ambient and engine), pressure, (barometric and manifold), crank position, You get the idea.
The ECU will work with these sensors and deliver the sparks and the fuel accordingly.
The TPS or Throttle Position Sensor is one in the equation, this little gem lets the ECU know what you are doing with the throttle and tries its best to keep up.
As some of us are finding out as we get older, it is more and more difficult to achieve what we did as things wear. As has been coorectly stated before, the TPS is for want of a better word a variable resister and when this wears it can send wrong signals to the ECU to the point that the ECU will think you have the throttle open but indeed it is closed. The rough running usually accompanying is due to the engine running rich because the ECU thinks the throttle is open, so supplying fuel for that order, then the Lambda sensor saying hang on this is too rich and telling the ECU to shut some fuel down. So you can see now there is a massive conflict going on, although switching off then on will get you home the only way forward is to change the TPS and the set it up with either TuneEcu or Tuneboy, its not just plug and play as the ECU will need a reference from the TPS for its position and voltage, sounds complicated but takes seconds to to.
The ECU has several sensors in the injection system to feed it info on certain parameters like Temp,(ambient and engine), pressure, (barometric and manifold), crank position, You get the idea.
The ECU will work with these sensors and deliver the sparks and the fuel accordingly.
The TPS or Throttle Position Sensor is one in the equation, this little gem lets the ECU know what you are doing with the throttle and tries its best to keep up.
As some of us are finding out as we get older, it is more and more difficult to achieve what we did as things wear. As has been coorectly stated before, the TPS is for want of a better word a variable resister and when this wears it can send wrong signals to the ECU to the point that the ECU will think you have the throttle open but indeed it is closed. The rough running usually accompanying is due to the engine running rich because the ECU thinks the throttle is open, so supplying fuel for that order, then the Lambda sensor saying hang on this is too rich and telling the ECU to shut some fuel down. So you can see now there is a massive conflict going on, although switching off then on will get you home the only way forward is to change the TPS and the set it up with either TuneEcu or Tuneboy, its not just plug and play as the ECU will need a reference from the TPS for its position and voltage, sounds complicated but takes seconds to to.
TURBO200R4
stand up straight and grab the world by the a$$
hi
metal is great explaining about that. just another thought if you put on a tps and it doesn't fix your problem it is still money well spent because the tps is an electric part that wears out it is just a matter of time before it goes. if the tps jams up the safety design of it still allows the throttle to return to its stop, the computer may set a subssitute figure based on the map,vss,ect. and still try to keep it running with the stepper motor.
herman
metal is great explaining about that. just another thought if you put on a tps and it doesn't fix your problem it is still money well spent because the tps is an electric part that wears out it is just a matter of time before it goes. if the tps jams up the safety design of it still allows the throttle to return to its stop, the computer may set a subssitute figure based on the map,vss,ect. and still try to keep it running with the stepper motor.
herman
scot in exile
Living Legend
How about this-- replace both that way every one is happy I still have the original on my 2005.
I still have the original on my 2005.
TriumPhil
Living Legend
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It's the TPS, plain and simple. Replace it!
