Can I recalibrate a TPS?

[Wayne_202]

Hello all, you may remember me from some time ago, I've dragged the wee out of the shed to get it back on the road.

It had a charging issue which while checking al the wiring I had the tank off and was then getting the pairing valve solenoid code, took it all apart and reconnected that however while I was in there my inner child came out and I had the urge to poke the butterfly valve, I put it back together and now if I rev it as the revs fall to idle it cuts out.


I’m guessing due to my immaturity I’ve messed up the Throttle position sensor? I’d there anyway to recalibrate it or is the only answer to replace it?


Bloody typical I've got it booked in tomorrow lunchtime for a mot too!!

[Rixington43]

I'm assuming you just fiddled with the upper butterflies since the lowers are well below them and hidden?
The upper/secondary butterflies have their own TPS so shouldn't have messed with the primary TPS at all and moving the butterflies shouldn't effect either unless they're forced beyond the range limit, which you'd know about.
The process outlined in the service manual even mentions moving the secondary butterflies by hand for balancing them to each other, I've done this on my Vee and can testify that it's (a) pretty pointless and (b) doesn't mess with either TPS.

More likely your issue is with the fast idle system in the cold. The bike should fire up and jump to around 2,000rpm in this weather, dropping to maybe 1,750 at 1 bar of temperature and then finally going to your set idle a while after 2 bars are reached.
Mine was out when I bought the bike and it ran fine all summer but then would die back and stall in winter until I sorted the fast idle, been perfect ever since.

* If your fast idle is currently operating fine then the above is no help Does it fast idle properly or was the bike up to temp when you experienced the issue?

** Yes it is possible to calibrate the TPS and it's fairly easy to do, lots of videos on YouTube and it's also outlined in the K9 service manual in the downloads area.
https://www.v-strom.co.uk/downloads/DL650AK9ServiceManual.pdf
You will need to jumper the dealer mode connector to do this. Either the YouTube video will tell you which pins to short or someone who's memory is better than mine will be along shortly to tell you which

[Wayne_202]

Thanks for the reply,
it was the bar that connects the top valves that I pulled which moved the top butterfly’s.
It’s definitely something I’ve done as before that it was ticking over fine, just had the f1 light on but rode OK other than over fuelling causing the exhaust to pop.

[Wayne_202]

Fast idle seems fine it’s just as you let off it dies, if you just leave it to tick over it will just not as good as it used to. It’s the fact as soon as you stop raving it cuts out

[Rixington43]

If the fast idle is working correctly and assuming all the intake sensors are plugged back in and the throttle body boots to the air box are properly attached then a TPS check is probably your next move. Search it on YouTube, it's super easy to do once you jumper into dealer mode.
Dealer mode will also tell you what fault has caused your FI light, if that's still showing.

[Wayne_202]

Thank you chap, I’m just eating dinner then going back out there so will give that a go

[Wayne_202]

Fixed one of the air pipes were missing placed in the wrong hole. Just a coincidence I guess

Very glad it’s sorted, thanks for your help. I owe you a beer

[Rixington43]

Top stuff, good it's sorted and free fixes are the best kind 👍

[Fat Rat]

Free fixes generally incur a £75 fee to the site owner.

Sorry, I don't make the rules.

[Wayne_202]

It’s in the post!

[Brockett]

Nice to hear from you again Wayne.

[Barbel Mick]

Yes it is. Deb & myself were talking about the Devon/Cornwall & the Wales weekend with you & Dom just the other week. Good times.   

[Wayne_202]

Hi brockett, Mick & Deb. Yeah very fond memories. Got the bike motd yesterday and took it out today. Like a comfy pair of old boots.

Haven’t heard from Dom in a number of years now sadly. He went more down the track riding route whereas I went more into the married and have a child route which took me away from playtime. However I’ve reconnected with biking in the last few months. Got 2 other bikes now too. A DRZ400 for a bit of green laning & also an Aprilia tuono v4 which is an incredible bike but easy to quick for me and the roads so I’m going to have to part with that one come spring time.

I WILL keep an eye out for rideouts and meets and any semi close to me I shall hopefully see some of you there.


All the best
Wayne