Sprint 955i Tps Fault

Hello all
I think my throttle position sensor is playing up and would like to replace it. In the Haynes manual it says that it has to be set up using the triumph diagnostic tool at the dealers. Is this correct or is there a way I can do it myself. Help would be appreciated

 

Thanks for the replies I will look into the tune ecu but please read below and see what you think.

The bike runs really rough under 2500 rpm and is like a kangaroo but only under load, at standstill it is fine and ticks over fine but as soon as you move off it’s like it’s misfiring badly. When riding once over 2500rpm it runs perfectly.

I have a power commander iii on the bike and when I connect it to the pc it shows the throttle position (as well as the leds on the pc3 itself) When I twist the throttle the indicator goes up and down with a few seconds delay which it hasn’t done before; it’s usually instantaneous with throttle movement. Also when I go to full throttle it goes up slowly to 108% and when I let go it slowly decreases to different levels up and down
If I flip the throttle and let the butterfly’s slam down on the throttle bodies it then behaves properly and throttle response on pc is instantaneous for a while until it happens again and I have to flip the throttle hard again
I have dis connected the pc3 and the bike still runs rough so it can’t be the pc3. This is why I think it could be the TPS.
I had thought about it being the stepper motor but wouldn't it misfire all the time and not just under load?
Any suggestions are welcome.
I have changed the plugs and put in fresh fuel but no difference.
Thanks again

 

Thanks freck
My bike is a red 2000 sprint 955 ST with 25k. Standard motor except for the triumph race carbon can and the pc3. I have removed the clip ons and fitted renthal bars (as I’m 6’4) which is more comfortable for me. It also has a nitron rear shock. I’ve had it 9 years now and this is the first major problem I’ve had! The one other issue I have is the plastic tank has distorted (I took it off for maintenance and it ended up being off the bike for a week and then it distorted) and is a nightmare to fit as I think it’s grown longer lol, something to do with the ethanol in the petrol so I’ve read?

I have ordered a tuneecu cable today so I will do as you say and check the o ring on the TPS, check the stepper motor hoses, and then refit the dreaded fuel tank lol

Thanks again, I’ll give an update when done.

 

Here’s what I found
I connected the bike to tuneecu and saw that the TPS was giving the correct voltage as freck has said The power commander 3 was still the same as before with the leds seeming to have a few seconds delay on moving when the throttle was moved and it was also sticking for longer periods now and again.
I decided to remove the power commander completely from the bike (last time I removed the injector plugs but not the wire going to the bikes TPS). After wrestling with refitting the fuel tank which was the hardest part lol the bike now runs fine!!
I can only think that the pc3 wire joining to the bikes TPS wire must have been the problem some how?
One question I have is on tuneecu when I go on full throttle the display only shows 76% but I know it’s fully open, is this a normal thing?
Thanks all

 

Thanks all
I will try a tune from the site as it is running a bit uneven at lower revs, which it always did before pc3 anyway. When I get some time I’ll download one for modified exhaust on tuneecu website and give it a go. Thanks for the info on pc3 capt. I’ll keep that in mind. I’m going to try the tuneecu map first and see how I get on but good to now I have a backup plan!!

 

I m going to download the 10078 map for tor’s exhaust. When I have downloaded it to my Ecu do I do the TPS reset straight after this(ignition off then back on and do a TPS reset) or do I need to get the engine up to temp first and then do the reset? Thanks freck

 

Thanks freck I will do as you say. Appreciate all your help