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Old 03-13-2013, 06:23 PM   #1
reztehdanimal
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Weird set valve issue?!

(07 gsxr 600) Okay i removed the set valve wire from ecu (checked 20 times to make sure it was right one), took off the cable on set valve. It starts up perfect, but the codes being read are still c28/c29!?! How is this possible? What else throws codes like that? So lost.. :( everything was done correctly and the bike runs very well....?
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Old 03-13-2013, 06:48 PM   #2
Gixxerr750
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Check the wire again...i learned the hard way.
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Old 03-13-2013, 07:46 PM   #3
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C46 is the only code that you can bypass via the #25 pin mod. I'll see what 28&29 are..
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Old 03-13-2013, 07:57 PM   #4
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Lol those are STVA codes, meaning the STVA is probably needing replacement. Very common on those bikes. New ones are ridiculously expensive, used ones will fail eventually. Very common issue.
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Old 03-13-2013, 09:45 PM   #5
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So I need a new stva? I thought that the wire snipped would get rid of c28/c29?...
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Old 03-13-2013, 09:49 PM   #6
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No, those codes can only be cured by actually fixing the problem.
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Old 03-13-2013, 09:51 PM   #7
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What is the "problem"? Will i have to reattach my set valve wire? Or is this a seperate issue?
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Old 03-13-2013, 10:04 PM   #8
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The STVA's fail in different ways, from gears breaking, motors failing, linkages binding, etc. The STVA is sold as an assembly, and as I said there are many things to fail, in many ways. It is a weak point of the k6/k7 gsxrs (along with other years i believe), similar to the S.E.T. valve actuator failing. There is always a MINOR chance that you have a wiring issue, but the most probable cause of your codes is the STVA itself. I mentioned about used replacement parts failing eventually, because the new STVA retails for $1,300.
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Old 03-13-2013, 10:12 PM   #9
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I do hear like a grinding noise when I ride.. you think thats it? Its not really loud Only hear it sometimes..
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Old 03-14-2013, 09:53 PM   #10
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SET valve and STVA are two different issues. you're getting a STVA code which has nothing to do with the SET valve. STVA is the secondary throttle valve actuator attached to the throttle bodies. if you've recently removed the throttle bodies for any reason, then i'd check to see if the plug is loose or disconnected. if everything is attached correctly, then it's time for a replacement.
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