.: XT660.com - The #1 XT660 Resource :. - Throttle Sensor Adjustment

.: XT660.com - The #1 XT660 Resource :. ( https://www.xt660.com/index.php)

- Fuelling and Intake ( https://www.xt660.com/forumdisplay.php?f=207)

- - Throttle Sensor Adjustment ( https://www.xt660.com/showthread.php?t=56)

The correct thing to do is to set the throttle position sensor up against your bike. It will be different from bike to bike....

Quote:

Originally Posted by Buck

hello ,i hope this might be of some help.
The fuel injection uses the TPS to indicate throttle opening, so it can be adjusted to increase the amount of fuel without increasing the amount of air. The results are a richer mixture which should smooth any surging ,as the bike is run very lean for emission purposes and results in the surging some people are experiencing

TP - Throttle Position - This sensor provides input signals to the ECM as it reacts to throttle shaft rotation, telling the ECM where the throttle is, as well as if it's opening or closing, and how fast it's opening or closing. It is at the rear end of the throttle blade

Buck says it will smooth surging, an d Kev says that it wil surge more....
Confused....

Quote:

Originally Posted by PJS

Buck says it will smooth surging, an d Kev says that it wil surge more....
Confused....

I will bow to Kevs knowledge as my info is not based on personal experience,but from technical literature.:sad1:

Quote:

Originally Posted by PJS

Buck says it will smooth surging, an d Kev says that it wil surge more....
Confused....

Try it, set the TPS to 26 ride it for a few days, then set the TPS to 16 then ride it again.

With my fueling mod, setting my TPS to 16 did improve my surging as setting it to 26. Give Fridayman
a PM as he has already tried this experiment.

Hi,

I have done a bit of playing with the TPS but no luck. I had it changed two weeks ago and still surges. No change with it at 26. (CO=15). Back now at 17. (XTR - May 05)

I read in the Spanish forum that there are two types: A1 and A2. Mine is A1, it seems that A2 goes better. So I phoned Yam Spain today and they said they wouldn't know...

Can anyone confirm about the A2 TPS? Many thanks in advance.

Cheers,

FH

How can somebody identify what version of TPS has on his bike ???

A1 or A2 ???

Quote:

Originally Posted by luke_xt

How can somebody identify what version of TPS has on his bike ???

A1 or A2 ???

It's easily done, unscrew the 2 star shaped screws (gold colour) on either side of the TPS. remove the TPS from the throttle body, give it a wipe and you will be able to read either A1 or A2 on the inside by the plug.

Remove your TPS & you will see the stamp.

Quote:

Originally Posted by FHR

I have read several posts about people succeding in getting Yamaha to replace their TPS for a A2 type. None of them lived in Spain but they were from different parts of the world. You might need to remind them that in case your bike stalls and you have an accident because of it they will be responsible as you had asked for the TPS to get replaced.

Quote:

Originally Posted by FHR

With the TPS set to 25 the bike will surge more then if it is set to 15, standard setting is 17. The bike will produce more power at 25 then set at 15.

The new A2 TPS will not stop surging. One thing Yamaha has done with our bikes running lean is to update the engine ECU from a 00 to a 01 which does help a lot with slow running conditions. I would also recommend a fuelling device which would increase fuelling & improve on the surging. There are a few to choose from, read under Fuel Devices. http://www.xt660.com/showthread.php?t=630

The A2 TPS is the recalled replacement TPS & if your Yamaha dealer has fitted a A1 TPS, this is old stock & is now super ceded to the A2. The A2 TPS are been change for cutting out & not surging.