08 SDR not throtling off

[chip]

It's been getting progressively worse when down shifting. Last week it would only drop down to 3k after blipping on the down shift. Handed it over to the experts thus morning.
Will see what they come up with.

[Colonel_Klinck]

Mine does something similar but as soon as I touch the brake it drops to normal revs. Seems to be worse if I'm filtering through traffic, although as I don't go out for blasts anymore and most of my rides are into London it could just be that I spend so much time filtering.

[No. 47]

BGC, TPS, clutch switch or TB rubbers - have had similar from faults with all these separately.

[Palau]

i've changed my front TPS..all good so far. check with TuneECU for error code

[chip]

http://i140.photobucket.com/albums/r37/ ... 3b9cf5.jpg
http://i140.photobucket.com/albums/r37/Chip4Now/Mobile%20Uploads/20141114_182439_zps0e3b9cf5.jpg

I give up . Bloody android.

Anyway the stepper motor was the issue and rather than cough up $1000 for new throttle bodies and stepper motor, the KTM advised the mechanic to remove the small rod that activates the butterflies.

Went to start it at the mechanics and no starter. Wait 5 minutes then all systems go. Stall and again no starter.
Gawd I have a love hate relationship with ktms. 40000 ks and its getting precious.

[chip]

Starting issue must be throttle position sensor. New technique is to press starter and slowly open throttle.

[No. 47]

Back to basics - first thing to try is reload your map, reset adapt and 15min reset - second, TPS setting with closed throttle should be 0.56 - 0.64V and circa 3.75V fully open, engine hot or cold - easily adjusted by loosening central locking screw and rotating TPS - third, if settings OK, clean, dewater, dry and dialectric grease BGC.

First and second need either TuneECU or your dealer hooking up to diagnostic tool.

[chip]

Thanks 47

[Thom]

I'm having this issue. Checked TPS, .64V. Reloaded new map. I'll see how it rides tomorrow. I hope that cleans it up. The previous map felt really muddy in weird spots and yes, throttle surge in traffic with no way to engine break is quite terrifying.

[No. 47]

Forgot to reiterate checking TB rubbers also.

[chip]

Turned the idle screw 360 clockwise and heard a marginal increase in idle revs. Also when ignition turned on the startup noises are back to normal ie they eventually stop where before it sounded like some electric motor just kept going.
Off to the mechanic for new tyres so will see if I can get the tps readings. Also found an electronics guru in town so might see if I can get him to look at the black boxes on the throttle bodies.

[ktmguy]

Turned the idle screw 360 clockwise and heard a marginal increase in idle revs. Also when ignition turned on the startup noises are back to normal ie they eventually stop where before it sounded like some electric motor just kept going.
Off to the mechanic for new tyres so will see if I can get the tps readings. Also found an electronics guru in town so might see if I can get him to look at the black boxes on the throttle bodies.

The black boxes are only pots nothing more, just covered in plastic to keep the crap out. Nothing electronics guru to sniff out, use tuneecu or an ohm meter to see if they are ok.

Idle screw??? You find new bits on your bike every day.... there is no such thing!!
The idle is controlled by a stepper motor on the front of the butterflies and it pushes the throttle open a bit. What you probably have been turning is the screw to balance the throttle bodies at the back left.
Shouldn't touch that unless you have tuneecu or a balancing tool (vacuum) connected!

Ask first if you don't know as this will not improve the situation, now you have other things to adjust.

[Thom]

the surging is now near constant. Started the bike this morning, went to drive off, shifted into second. By the time I made it to the stop sign, it was surging to 3000. Stopped bike, shut it off, restarted and drove off. Same thing, within 2 gear changes, it was surging again.

I actually watched it at a stop light, start at idle, around 1450, and move to around 3800 RPM.

TPS, at rest is .64V, but I don't know what it is at WOT. I'll take a look at the stepper arms but is there anything else I should check? All plugs just got a healthy dose of dielectric grease (thank you amazon).

[ktmguy]

the surging is now near constant. Started the bike this morning, went to drive off, shifted into second. By the time I made it to the stop sign, it was surging to 3000. Stopped bike, shut it off, restarted and drove off. Same thing, within 2 gear changes, it was surging again.

I actually watched it at a stop light, start at idle, around 1450, and move to around 3800 RPM.

TPS, at rest is .64V, but I don't know what it is at WOT. I'll take a look at the stepper arms but is there anything else I should check? All plugs just got a healthy dose of dielectric grease (thank you amazon).

TPS is off!

Don't look at the voltage, try to get it where it idles fine and doesn't surge.
Hook up your tuneecu in the diagnostic screen and with the bike warm!!!! WARM!!! adjust TPS so it is at 0% when close, never mind the full throttle, it probably shows 98 or 99 % but that doesn't matter.
As said the engine needs to be hot or the throttle is not closed, hence wrong read out.

[No. 47]

Check the seating/sealing and for splits in the throttle body rubbers.

[SDXLIXI]

^^^^^^^ as above! check for intake leaks/ good sealing.

At closed throttle and, map dependant up to a given throttle percentage, the fuel injection will be running on a fuel map dependant on intake manifold pressure. If you have a leak this would alter the manifold pressure and thus the fuelling.

Does the bike surge a lot when on the move? If you hold a constant throttle does it feel like it's surging? Try it at constant throttles both at small and large openings, this way you can check for surging while running on the manifold map and the throttle map.

[chip]

Forgot to reiterate checking TB rubbers also.

So three years on, two separate KTM shops and I finally take your advice and replace the TB rubbers and all is well. And it's my shout for a Ginness.
Want to try for two?
Started the bike the other afternoon and she fires up at 3500rpm and sits there for about two minutes until the temp guage starts to respond. Ambient temp is around 30°C.
A quick run into the servo to refuel then home for the night.
Up early for a.run on Saturday and its back to normal until I'm 3 minutes into the ride and it's like the first time the high idle appeared in that it always came back to idle eventually. We head off out of town and as the revs stay well up the problem doesn't appear all that often. And after a mate low sides on a tightening gravel strewn bend, the ECU learns that it can be a tough life and runs sweet for the rest of tbe day.
I try connecting TuneECU but the obd doesn't power up. Tested it on another bike so either the bike's. Connector or the cabke to the obd2 unit.
Any ideas on the bike's behaviour or a test for tbe cable or connector?
Regards Chip

[No. 47]

No idea re test for cable test other than borrowing someone else's and see if that works - if TB rubbers now good and TPS setting proves to be OK, suggest starting with the fabled BGC routine and checking clutch switch.

[chip]

No idea re test for cable test other than borrowing someone else's and see if that works - if TB rubbers now good and TPS setting proves to be OK, suggest starting with the fabled BGC routine and checking clutch switch.

Started again with a high idle for less than 1 minute then was well behaved .
Started cleaning all the electrical connectors around the battery and the TuneECU cable came back on.
Off to buy some of dielectric grease and have a go at the BGC.
Checked my idle map and couldn't see anything that looked like 3000rpm when cold. (Don't profess to know much at all about maps.)
Any ideas where could I get a stock 2008 SDR map online?

[No. 47]

http://www.tuneecu.com/KTM_Tune_list.html

[chip]

Loaded the "2008 SDR with Acro slip on" map and 15 min reset last night. Dielectric grease on the BGC and others.
Had some seating issues with orange rubber seal inside the BGC. (Wonder whether I stuffed that myself when I changed the TB rubber grommets.
Started this morning after overnight temps cooled the engine and no inital high revs.
First time for a long while.
Taking her for a run this morning.
Thanks again 47. Multiple Guiness now owed by me.
Regards Chip

[chip]

https://drive.google.com/file/d/1d8SWJ5H0vnDjpOswcFlZ4u-UMd2Oqg6F/view?usp=drivesdk