GSXR, won't rev - secondary throttles? - SV650.org

31-05-11, 11:23 AM

GSXR 600. 10.000 miles.

Me and the girls went for a ride yesterday evening. After stopping off I went back to the bike and it started as normal. But the red indicator light stayed on and FI starting flashing. I shut the bike off and re started it and the same thing, during idle the bike sounded fine...
I tried to rev it and it wont pass 8K RPM's. I removed the negative cable on the battery thinking that would reset the light, but it didnt...

On the ride home the bike runs fine but only as I'm below 8K. If I ease the throttle open the rpms will gently raise up past 8k. Tried opening the throttle all the way, n the bike hesitates as if I'm bouncing off the rev limiter but at 8K rpms

After pulling things apart, I saw that the butterflies was closed which explains why I couldnt rev past 8000 RPM's. I've read somewhere that you can just remove the secondary butterflies, but this is what I have done.

Instead of removing the butterflies, they are now in the open position. However the C28 code is still there which is supposed to be since I never really solved the problem. I ran the bike through the gears and it now goes to the rev limit instead of just cutting off at 8Krpms. and it does this regardless of the throttle position (WOT, 3/4 throttle, whatever)

My question is: will riding the bike like this damage anything? As need it it to commute...

I do plan to get the problem properly resolved on next pay check, but can I ride the bike like this for a short time without any worries?

yorkie_chris · 31-05-11, 12:00 PM

If it's running fine you can probably ride it without damaging anything.

What did you do to the butterflies? Lock them open or just move them? Could be a bad STV servo/pot or bad wire. Or sh*tted up linkage/shaft

rictus01 · 31-05-11, 12:12 PM

Hmmm I believe the c28 code is the secondary throttle valve actuator error, so as Chris says it could well be the actuator or it's feed, still red lights are red for a reason, I'd want to confirm that before saying it was OK to ride about like that for any length of time.

Cheers Mark.

fizzwheel · 31-05-11, 01:06 PM

Quote:

Originally Posted by rictus01

Hmmm I believe the c28 code is the secondary throttle valve actuator error,

Just had a quick look on www.gixerjunkies.com search of the site says the same.

I'm not going to comment any further as I dont know, but I would ask the same question on www.gixerjunkies.com as you'll more than likely get a better answer on there than on here.

31-05-11, 08:40 PM

I have to ask, how do you have a k9 model on an 07 plate???

31-05-11, 11:23 AM	#1
Jessica_ Guest Posts: n/a	GSXR, won't rev - secondary throttles? GSXR 600. 10.000 miles. Me and the girls went for a ride yesterday evening. After stopping off I went back to the bike and it started as normal. But the red indicator light stayed on and FI starting flashing. I shut the bike off and re started it and the same thing, during idle the bike sounded fine... I tried to rev it and it wont pass 8K RPM's. I removed the negative cable on the battery thinking that would reset the light, but it didnt... On the ride home the bike runs fine but only as I'm below 8K. If I ease the throttle open the rpms will gently raise up past 8k. Tried opening the throttle all the way, n the bike hesitates as if I'm bouncing off the rev limiter but at 8K rpms After pulling things apart, I saw that the butterflies was closed which explains why I couldnt rev past 8000 RPM's. I've read somewhere that you can just remove the secondary butterflies, but this is what I have done. Instead of removing the butterflies, they are now in the open position. However the C28 code is still there which is supposed to be since I never really solved the problem. I ran the bike through the gears and it now goes to the rev limit instead of just cutting off at 8Krpms. and it does this regardless of the throttle position (WOT, 3/4 throttle, whatever) My question is: will riding the bike like this damage anything? As need it it to commute... I do plan to get the problem properly resolved on next pay check, but can I ride the bike like this for a short time without any worries?

31-05-11, 12:00 PM	#2
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Gixer trouble If it's running fine you can probably ride it without damaging anything. What did you do to the butterflies? Lock them open or just move them? Could be a bad STV servo/pot or bad wire. Or sh*tted up linkage/shaft __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

31-05-11, 12:12 PM	#3
rictus01 Member Mega Poster Join Date: Jul 2003 Location: South London Posts: 9,799	Re: Gixer trouble Hmmm I believe the c28 code is the secondary throttle valve actuator error, so as Chris says it could well be the actuator or it's feed, still red lights are red for a reason, I'd want to confirm that before saying it was OK to ride about like that for any length of time. Cheers Mark. __________________ Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming, 'Wow! What a Ride!

31-05-11, 08:40 PM	#5
mcgrimes Guest Posts: n/a	Re: GSXR, won't rev - secondary throttles? I have to ask, how do you have a k9 model on an 07 plate???

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
removing secondary throttle valve's	svsdutch	SV Talk, Tuning & Tweaking	2	14-05-08 10:43 AM
Secondary Arthritis	dizzyblonde	Idle Banter	23	30-04-08 06:08 PM
GSXR 1000 yokes for GSXR front end swap SOLD	Khewett	For Sale - SV's and SV related items	3	30-05-06 12:03 PM
GSXR front end conversion - will K5 GSXR 1000 yokes fit??	Khewett	SV Talk, Tuning & Tweaking	7	11-05-06 04:43 PM
Secondary Throttle Plates, who needs 'em!?	TheLeprechaun	SV Talk, Tuning & Tweaking	11	17-05-05 09:24 PM