SV650 Bogging down upon quick throttle response - Page 3 - SV650.org

Redrose · 03-01-20, 12:46 PM

I'm browsing through the service manual for the bike and have noticed that during the C00 error code, when the bike isn't running, the TPS position is on the lower (_) out of three options and it's supposedly meant to be in the middle (-)?

I wonder if that's potentially part of the issue.

https://imgur.com/falrDwl

Adam Ef · 03-01-20, 05:27 PM

TPS sensor is often out of place. It's very sensitive to adjust. You need a security torx bit / key. There was a thread on here about it and setting it a while ago. If you adjust it my advice would be tiny taps on it with the torx bolt still mostly done up, as when you tighten up the torx bolt it is so sensitive the tightening adds adjustment to what you've already done. It can be a bit trial and error.

aesmith · 06-01-20, 02:04 PM

Quote:

Originally Posted by Redrose

I'm browsing through the service manual for the bike and have noticed that during the C00 error code, when the bike isn't running, the TPS position is on the lower (_) out of three options and it's supposedly meant to be in the middle (-)?

Yes, it's supposed to be in the middle when the bike's idling, and try and set it so it goes "up" almost as soon as the throttle's opened. Check slowly, the display only updates every 1/2 second or something.

Adam Ef · 06-01-20, 05:11 PM

When I checked mine it was about 4k revs before the dash moved up. Common problem apparently. Took a few attempts to get it move up just above idle.

aesmith · 07-01-20, 12:31 PM

I think part of the problem is that the TPS is on the rear throttle body, rather than the one directly controlled by the throttle cable. So it's dependent on any backlash in the linkage, and also means it will need to be reset after TB balance has been adjusted. I think on the original pointies it gets messed up if you change the idle speed as well.

Adam Ef · 07-01-20, 12:45 PM

Plus, on a K9 you need to lock the idle with the dealer or Healtech tool as it's auto idle if you want to balance the throttle bodies. That's the stage I got to with my K8.

aesmith · 07-01-20, 01:12 PM

At MOT last year I got the dealer to check valve clearances and balance TBs. I completely forgot about the effect on TPS until I was messing around and set Dealer Mode for another reason. It was way off.

Adam Ef · 07-01-20, 01:25 PM

They're often set quite high from new.

03-01-20, 12:46 PM	#21
Redrose Junior Member Join Date: Dec 2019 Posts: 14	Re: SV650 Bogging down upon quick throttle response I'm browsing through the service manual for the bike and have noticed that during the C00 error code, when the bike isn't running, the TPS position is on the lower (_) out of three options and it's supposedly meant to be in the middle (-)? I wonder if that's potentially part of the issue. https://imgur.com/falrDwl Last edited by Redrose; 03-01-20 at 12:47 PM. Reason: Link to photo

03-01-20, 05:27 PM	#22
Adam Ef Member Mega Poster Join Date: Dec 2015 Location: Bristol Posts: 1,200	Re: SV650 Bogging down upon quick throttle response TPS sensor is often out of place. It's very sensitive to adjust. You need a security torx bit / key. There was a thread on here about it and setting it a while ago. If you adjust it my advice would be tiny taps on it with the torx bolt still mostly done up, as when you tighten up the torx bolt it is so sensitive the tightening adds adjustment to what you've already done. It can be a bit trial and error. __________________ >>> ? <<< Past: Street Triple 765rs, DRZ400s,GSXR1000 K9, VFR800 A8, ZX6R 636 2006, CRF250L, GSXR750 K7, VFR800 A7, GSXR750 L3, Street Triple 675R, MT09 Tracer, SV650s K8, CB250rsd, YBR125...

06-01-20, 05:11 PM	#24
Adam Ef Member Mega Poster Join Date: Dec 2015 Location: Bristol Posts: 1,200	Re: SV650 Bogging down upon quick throttle response When I checked mine it was about 4k revs before the dash moved up. Common problem apparently. Took a few attempts to get it move up just above idle. __________________ >>> ? <<< Past: Street Triple 765rs, DRZ400s,GSXR1000 K9, VFR800 A8, ZX6R 636 2006, CRF250L, GSXR750 K7, VFR800 A7, GSXR750 L3, Street Triple 675R, MT09 Tracer, SV650s K8, CB250rsd, YBR125...

07-01-20, 12:31 PM	#25
aesmith Member Join Date: Mar 2013 Location: Aberdeenshire Posts: 966	Re: SV650 Bogging down upon quick throttle response I think part of the problem is that the TPS is on the rear throttle body, rather than the one directly controlled by the throttle cable. So it's dependent on any backlash in the linkage, and also means it will need to be reset after TB balance has been adjusted. I think on the original pointies it gets messed up if you change the idle speed as well.

07-01-20, 12:45 PM	#26
Adam Ef Member Mega Poster Join Date: Dec 2015 Location: Bristol Posts: 1,200	Re: SV650 Bogging down upon quick throttle response Plus, on a K9 you need to lock the idle with the dealer or Healtech tool as it's auto idle if you want to balance the throttle bodies. That's the stage I got to with my K8. __________________ >>> ? <<< Past: Street Triple 765rs, DRZ400s,GSXR1000 K9, VFR800 A8, ZX6R 636 2006, CRF250L, GSXR750 K7, VFR800 A7, GSXR750 L3, Street Triple 675R, MT09 Tracer, SV650s K8, CB250rsd, YBR125...

07-01-20, 01:12 PM	#27
aesmith Member Join Date: Mar 2013 Location: Aberdeenshire Posts: 966	Re: SV650 Bogging down upon quick throttle response At MOT last year I got the dealer to check valve clearances and balance TBs. I completely forgot about the effect on TPS until I was messing around and set Dealer Mode for another reason. It was way off.

07-01-20, 01:25 PM	#28
Adam Ef Member Mega Poster Join Date: Dec 2015 Location: Bristol Posts: 1,200	Re: SV650 Bogging down upon quick throttle response They're often set quite high from new. __________________ >>> ? <<< Past: Street Triple 765rs, DRZ400s,GSXR1000 K9, VFR800 A8, ZX6R 636 2006, CRF250L, GSXR750 K7, VFR800 A7, GSXR750 L3, Street Triple 675R, MT09 Tracer, SV650s K8, CB250rsd, YBR125...

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