Wild Dog Adventure Riding

Technical Section => Make / Model Specific Discussions => KTM LC4 400/610/640 & 690 => Topic started by: 777 on August 31, 2014, 05:25:48 pm

Title: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on August 31, 2014, 05:25:48 pm
http://youtu.be/XbevRd-KgBs (http://youtu.be/XbevRd-KgBs)

So was riding along single track and 2 lambs run in front of me. Lock on brakes , bike stalls, drop to 3rd while  bike doing about 40kmh to bump start, big back fire. I pull over , select neutral to re start bike, once again, big back fire, it did this about 6 times.  I then turn ignition off etc, wait a while, then it starts but now revving up and down on it's own, revving from 3000-5000 up and down, as if I was twisting the throttle. A quick check of all cables etc, nothing out of place. So I continue riding the revs stop going up and down, but now idels at over 2000, and when you de eclarate the revs do not drop, they just stay the same. In the video you see I rev it but the revs do not drop down.

I need to check cable routing.
Bushcat says plug behind head light check and clean

Any body got any other things to check, will do a Google search also?
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: JMG on August 31, 2014, 05:32:04 pm
Sub, I'm seriously thinking of buying one so no I need to learn all their  tricks
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: JustBendIt on August 31, 2014, 05:55:53 pm
Check that the throttle body is firmly pushed into and sealed around short intake manifold - I had a 690 backfire on me and dislodge throttle body from intake causing same symptoms you describe

Fix it by loosening big hose clamp - push TB firmly in and tighten clamp again but do not over tighten because this then squeezes TB off again
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on August 31, 2014, 06:24:21 pm
Check that the throttle body is firmly pushed into and sealed around short intake manifold - I had a 690 backfire on me and dislodge throttle body from intake causing same symptoms you describe

Fix it by loosening big hose clamp - push TB firmly in and tighten clamp again but do not over tighten because this then squeezes TB off again
Txs will check that
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 01, 2014, 04:28:39 pm
Check that the throttle body is firmly pushed into and sealed around short intake manifold - I had a 690 backfire on me and dislodge throttle body from intake causing same symptoms you describe

Fix it by looseninExcuse


g big hose clamp - push TB firmly in and tighten clamp again but do not over tighten because this then squeezes TB off again
Excuse my ignorance'Google not much help,can someone post a pic or explain the location of then throttle body


'
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: JustBendIt on September 01, 2014, 04:34:08 pm
stand on left hand side of bike

look at bike - front wheel should be on your left

look at engine - throttle body behind engine - on right of engine - same place as the carburettor would be

Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 01, 2014, 06:11:56 pm
stand on left hand side of bike

look at bike - front wheel should be on your left
B
look at engine - throttle body behind engine - on right of engine - same place as the carburettor would be


Easy like that,shot will check it out.Hope access is easy to get to,or is some stripping  needed
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 06, 2014, 10:18:59 am
Check that the throttle body is firmly pushed into and sealed around short intake manifold - I had a 690 backfire on me and dislodge throttle body from intake causing same symptoms you describe

Fix it by loosening big hose clamp - push TB firmly in and tighten clamp again but do not over tighten because this then squeezes TB off again
Thanks ,spot on it was half off.Put it on ,now to do TPS and 15min ideal
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: JustBendIt on September 06, 2014, 11:06:10 am
Good to hear it's sorted.

It should be fine - I don't think it will need to idle for 15 min - I hate leaving bikes running for so long at idle with no cool air blowing over radiators - they get so effing hot

Rather disconnect battery for ten minutes - that should reset ECU

or just ride the bike
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: Manic on September 06, 2014, 11:10:14 am
Great stuff  :thumleft:   :thumleft:
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 06, 2014, 11:41:02 am
Good to hear it's sorted.

It should be fine - I don't think it will need to idle for 15 min - I hate leaving bikes running for so long at idle with no cool air blowing over radiators - they get so effing hot

Rather disconnect battery for ten minutes - that should reset ECU

or just ride the bike
Agree rather do the battery de power
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 06, 2014, 03:40:54 pm
Good to hear it's sorted.

It should be fine - I don't think it will need to idle for 15 min - I hate leaving bikes running for so long at idle with no cool air blowing over radiators - they get so effing hot

Rather disconnect battery for ten minutes - that should reset ECU

or just ride the bike
Question ,when disconnecting the battery,do I take negative or positive off first?
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: JustBendIt on September 06, 2014, 05:33:58 pm
Does not matter - it is not a space ship - just disconnect the power for ten minutes
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: Bushcat on September 07, 2014, 08:43:28 pm
So after reinserting the throttle body & disconnecting the battery for 10 mins have you solved your idling issue on your space ship?
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 08, 2014, 11:45:40 am
So after reinserting the throttle body & disconnecting the battery for 10 mins have you solved your idling issue on your space ship?
Not sure have not had a chance to start her yet.
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: Bushcat on September 24, 2014, 07:20:50 am
So what was the end result?
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 24, 2014, 11:56:24 am
So what was the end result?
All sorted
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: Bushcat on September 24, 2014, 08:03:13 pm
Thats a good explanation you chop!!
What was the problem?
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: JustBendIt on September 24, 2014, 08:08:42 pm
If the TB was loose and dislodged from intake manifold as I suspect it would have been sucking air which would have caused the symptoms described
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: 777 on September 25, 2014, 03:05:10 pm
Check that the throttle body is firmly pushed into and sealed around short intake manifold - I had a 690 backfire on me and dislodge throttle body from intake causing same symptoms you describe

Fix it by loosening big hose clamp - push TB firmly in and tighten clamp again but do not over tighten because this then squeezes TB off again
Was exactly that,a tiny section came off,just pushed it back on,sorted.WD is a wonder full resource to have.
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: )smittie( on January 20, 2016, 10:26:30 pm
Gents, I need help please. My bike did exactly what you described. I stripped all fixed the TB back on. But it still ideal between 3000 and 4000rpm. Have got any other checks? Ktm workshop explained that they need to plug-in and check. They think my TB and a "sensor" is not synchronised. It is a 2012 model. Thanks
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: Omninorm on January 21, 2016, 02:29:23 pm
Gents, I need help please. My bike did exactly what you described. I stripped all fixed the TB back on. But it still ideal between 3000 and 4000rpm. Have got any other checks? Ktm workshop explained that they need to plug-in and check. They think my TB and a "sensor" is not synchronised. It is a 2012 model. Thanks

Throttle positioning sensor needs a clean perhaps?

Not sure on the 690 but you should be able to open it and clean  it with some Carb Cleaner.
Title: Re: KTM 690 Erratic Ideal revving-Video added
Post by: )smittie( on January 31, 2016, 06:32:09 pm
KTM advised that the problem is one of the TB side sensors, needs to be replaced . Unfortunately KTM only sell the complete TB (R10 500). The sensor is not sold separate!!! WTF!!!.