Sprint St Gen1 3000rpm Idle

I have a 1999 Sprint St. Mot is due this week but the revs were rising on rh turns and a high idle speed. I guessed a pinched throttle cable so removed tank and freed the cable from between the frame rail and fairing. Idle still too high so removed airbox to find butterflies didn't appear to be closing fully so temporarily added an extra return spring. All looked good, refitted everything, now it won't idle under 3000rpm!
Web search, ah, check for air leaks, yes someone had bodged a scottoiler connection into one hose, now perished. Removed connection and replaced hose, still 3000rpm idle.
More Web searching. Ah, yes, maybe need to reset idle with tuneecu, luckily I bought a cable yonks ago. Found useless website but managed to work out can download to my android phone, for a fee. Done.
Now what? There are no instructions.
I'm a bit of a luddite and more used to carbs and idle screws not new fangled tech.
Connected USB cable to obd2 connector, nothing. Asks for Bluetooth connection, why?
Ok so I'll use my laptop. How do I download software? Who knows. I can't get it to download.
So, I'm stuck. Can't understand why the idle speed suddenly changed and cant change it back. Now I have to drive to work and pay for parking and the bike mot will run out in 3 days.
Can some please explain in the simplest terms how to get tuneecu to work on laptop or Android. Assuming this will reset idle speed and turn off the management light that has now appeared.
Many thanks, John

 

Hi Guys, bit surprised no one has replied. But I can't expect miracles.
I've tried again with the android version on my phone. Nothing happens when I connect the lead. Though to be honest I'm not really sure what to expect.
Still not managed to download pc version. Every link seems to point to android version (.apk?). How on earth do I get it to download to my pc? And how come so many people seem to have it. Am I just a bit thick?
I have succeeded in getting the correct driver for my lonelec lead, yay!
Now what do I do, help urgently needed.
If someone can explain why it suddenly started idling at 3k, that would be a start. I'm baffled.

Cheers, John

 

Well, there is progress, of sorts, anyway.
Took another close look at everything and determined it's nothing "mechanical".
So, tried the app one more time; can't get it to do anything. Surely it should work with a cable and I've tried 2 otg cables.
However, on another Triumph forum (sorry!), I found download instructions from lonelec website. Another a number of attempts I actually got the software onto my laptop and connected it to the bike, yay!
Then I ran out of time. So, back on it at the weekend. I'm hoping it's the TPS reset, just gotta work out how to do that. I know I've seen instructions somewhere, but if anyone wants to remind me, that would great. Also, how to save current and download a new map. I believe the current is 10078, so if anyone knows a better one for s standard gen 1, 955 St with s beowolf exhsus

Well, some progress. A thorough check revealed nothing mechanical, so back to android app, still won't work, even with 2nd otg cable, waste of £10.99 imo.
However. On another Triumph forum (sorry!), I found download instructions and via the lonelec site have successfully downloaded the pc version. And it connected to my bike, so I'm in, but ran out of time.
So. At the weekend I'm planning to reset the TPS and download the best map for a standard gen 1 St with beowolf exhaust, if anyone knows a good one. Current map is 10078, I believe.
Cheers. John

 

Hi Joe,

I have a separate thread in the technical section, so maybe should continue this discussion there.
The gen1 bikes only had a single cable, so no return to check unfortunately.
Annoyingly I have a pair of cables from a gen2, as I broke one a while ago. Also got a few other parts left over if anyone's interested.

John

 

Well, I think I've killed my bike.
Connected Tuneecu and read TPS voltage as 0.96v. Fiddled with cable and TPS position (how are you supposed to adjust that, there is no adjustment?) and managed to get voltage down to 0.72v.
So put it back together and started up, idle speed 2700rpm. Ran it to warm anyway. Got warm then dumped all its water on the ground and melted the lower fairing around the exhaust. Temperature gauge didn't go above normal.
Tried TPS reset on tuneecu. Idle speed about 1500rpm but then revved it, shot to 7000rpm and wouldn't come down. Turned it off. Very hot and turns over very slow on starter. Is it seizing?

Anyone got any ideas before I break it?

 

I would upload an image of the. tuneecu screen but can't work out how to do that.

 

Good call on the inlet rubbers I'll check those again, I may even have a spare set.
Otherwise there is a good bike mechanic not far away, I will be talking to him this week.
Cheers, John

 

Hopefully I've just uploaded the tuneecu screen shot. This was before a tweaked the TPS voltage.
Dunno if anyone can see anything useful from this.

Cheers, John

 

Well guys, thank you very much for your input.
I have slackened the cable to ensure free play in throttle, also removed extra spring. I have also checked the iacv hoses and that they are correctly located on the 3 open ports.
It does make total sense that the throttles are not closing properly, which is what I thought from the beginning. I have heard of this erroneous o-ring before. I will start again by removing it and see if the throttles fully close.
That's a task for tomorrow. I will let you know how it goes.
Thanks again, Jojn

 

Well I once again removed the TPS, no sign of any o-ring, maybe it had already been removed. No adjusting nut either, I think someone mentioned one. While I was there I swapped the 2 mount bolts for m4 stainless cap heads, can now use a cut down Allen key to remove next time. A good tip, sorry can't remember who from.
Next, I was going to check inlet rubbers. But there aren't any. Seems the series 1 is solidly mounted with gaskets. I know S2's have rubbers because I've got a set and the throttle bodies come to think of it.
So, another check of IACV hoses. Found a miniscule crack on one end so clamped it up with a petrol pipe clip and refitted airbox and tank.
Fired up first time and idled at just under 2k! Wow.
Hooked up tuneecu and got the results as in photo.
I did a tune TPS. Restarted and idle now at 1500rpm. Ok, a bit high but I'm happy for now.
Decided to do a couple of minor repairs to rear bodywork where 2 of the mount lugs had broken off. So out with the isopon p40. Will see how that turned out on Thursday when I'm next off work. Then I can give a brief test before I book it for an mot next week.

It's been a painful week and a half, but seem to be there now. Learnt a hell of a lot and I'm eternally grateful for all the advice. Thank you.

"It's been emotional". (Lock stock?)

Ps, if anyone needs any more info, or, god forbid, advice, please don't hesitate to contact me. I've got a few parts knocking about too. Mainly S2 sprint St.

John