Throttle response

[Kdubb223]

Throttle Position Sensor Issues (Are you Experiencing Poor Idle/Mileage, or Stalls?) - Sportbikes.net

Not sure if this will help...but worth the read. Quite a bit of people having issues with the TPS on Yamahas.

 

[SurfJunkie]

Throttle Position Sensor Issues (Are you Experiencing Poor Idle/Mileage, or Stalls?) - Sportbikes.net

Not sure if this will help...but worth the read. Quite a bit of people having issues with the TPS on Yamahas.

Nice find kdubb.

+1 for putting it in diag mode and reading the TPS BEFORE swapping the battery.

 

[Kdubb223]

Here are my TPS numbers... my closed throttle reading seems to be fine, however my WOT reading is a ways off... Not sure if the JB Pro has anything to do with that.

I have yet to have any fault codes so I should be fine.

Page 8-41 in Service Manual:
Check in the diagnostic mode (Code No. D01).
When throttle is fully closed: A value of 14-20 is indicated.
When throttle is fully opened: A value of 91-95 is indicated.
If the indication is outside of range: Replace the throttle position sensor.
Refer to "CHECKING THE THROTTLE POSITION SENSOR" on page 8-92.

 

[SurfJunkie]

Here are my TPS numbers... my closed throttle reading seems to be fine, however my WOT reading is a ways off... Not sure if the JB Pro has anything to do with that.

I have yet to have any fault codes so I should be fine.

Page 8-41 in Service Manual:
Check in the diagnostic mode (Code No. D01).
When throttle is fully closed: A value of 14-20 is indicated.
When throttle is fully opened: A value of 91-95 is indicated.
If the indication is outside of range: Replace the throttle position sensor.
Refer to "CHECKING THE THROTTLE POSITION SENSOR" on page 8-92.

Think that means you need to adjust your throttle cable. You aren't actually seeing WOT with its current travel. Free HP awaits you

 

[Scott_Thomas]

Think that means you need to adjust your throttle cable. You aren't actually seeing WOT with its current travel. Free HP awaits you

Thanks for the info, will be helpful for a lot of people on here. What you said makes perfect sense too since the value is under the specified range.

 

[nismos14]

Think that means you need to adjust your throttle cable. You aren't actually seeing WOT with its current travel. Free HP awaits you

It's a possibility but just conjecture. You can't know that for sure.

Thanks for the info, will be helpful for a lot of people on here. What you said makes perfect sense too since the value is under the specified range.

Maybe, but I wouldn't rush to agree with that until the person with the issue adjusts the cable and re-tests.

 

[Scott_Thomas]

It's a possibility but just conjecture. You can't know that for sure.



Maybe, but I wouldn't rush to agree with that until the person with the issue adjusts the cable and re-tests.

Not agreeing about the cable, just the diag mode itself and the results. Honestly I had no idea that we could do this. The results show that he's not truly getting WOT. I don't know if it's the cable, just know what the number says. 100 is probably not truly achievable hence the max value of 95. He's not way off though so may not make a huge difference getting it to max value.

 

[nismos14]

Not agreeing about the cable, just the diag mode itself and the results. Honestly I had no idea that we could do this. The results show that he's not truly getting WOT. I don't know if it's the cable, just know what the number says. 100 is probably not truly achievable hence the max value of 95. He's not way off though so may not make a huge difference getting it to max value.

Oh yeah!! For sure. We're on the same page.

 

[SurfJunkie]

We will know 100% once kdubb adjusts his cable and reports back.

If he doesn't, its a really easy test to tell.

1. put the bike in TPS diag.
2. WOT it and write the reading down. Do it a few times to insure a consistent reading.
3. Adjust the throttle either tighter or looser.
4. Repeat above and you will know 100%.

Id recommend if your TPS is already reading at 95 to obviously go looser. If someone gets a chance to check this before me, please post back your findings
:zombie:

 

[Kdubb223]

I will be retesting it soon guys. I didn't think about it until now but I tested with the handle bars turned all the way left... Just like when adjusting the throttle free play you have to test with the handle bars straight and lock to lock. will be testing again with wheel straight. Also might adjust my idle speed.

I am interested in seeing other owner's results.