Secondary throttle plates removed, running issues - ZX6R Forum
 
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post #1 of 5 Old 01-11-2014, 06:13 PM Thread Starter
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Secondary throttle plates removed, running issues

Hello,

I apologize in advance if this is not the right place to post this - admins?

I have a 2005 ZX6R with around 20,xxx miles. I decided to do a valve check/adjustment a little early (the 14k inspection was done on time) because the bike was getting very "chattery."

While I had everything off, it seemed like a good time to do the little upgrades people suggest all over the forums (I searched A LOT before doing anything then searched A LOT more after).

I did the following:

-Valve check, adjustment - following FSM instructions along with tips from various videos and forum posts.
-KLEEN Air system removal - followed (archived) instructions from this and other forums.
-"Quick-turn" throttle with PVC - same as above, followed instructions.
-Replaced spark plugs (I was in there, so why not?)
-Removed secondary throttle plates (butterflies) - I did this following instructions from a member on here. I removed the entire assembly and plugged all the holes properly.

Okay, so that is ALL that was done this time around. I expected to get my FI light because I removed the servo for the secondary throttle plates, so I was not surprised when I turned on the bike and had a light. I should also mention I do have a PC3 with a custom map for my setup before this round of things. I didn't expect to have to retune, because I'd read that using the "Accel Pump" feature on my PC could account for any low-end hesitation.

What is happening now:

-Difficulty starting (not huge, but it is noticeable)
-Will NOT rev past 6-7k rpm in any gear and is hesitant when in Neutral.
-Sounds like a V-twin (this could be me being paranoid, but it definitely sounds different)

I pulled the codes and got the following:

11: Main throttle sensor malfunction, wiring open or short
32: Sub throttle sensor malfunction, wiring open or short

As I said, I expected #32 to pop up and I'll be making a "throttle buddy" same as I made my "servo buddy" at some point to get rid of that code.

I did not expect any issues with the Main throttle sensor.

Help please!

I am a rotary guy and working on anything with pistons is already a headache, so any help is appreciated!
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post #2 of 5 Old 01-11-2014, 06:42 PM
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Plug the secondary throttle servo back in see if you still have issues! Are you sure you plugged in all the connectors for the throttlebody harness?
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post #3 of 5 Old 01-11-2014, 06:49 PM
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You know I have heard that removing those secondary flies does nothing honestly in means of gaining HP the just control your emissions that's all. And this is knowledge coming from a teacher at MMI

Live your Life With No Regrets
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post #4 of 5 Old 01-11-2014, 07:25 PM Thread Starter
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Ugh. Figured it out right after posting this ... I think...

Main tps plug was extremely fouled. Cleaned, reconnected.

TPS needed to be calibrated on the PC - Did the "quick turn" throttle mod - was giving incorrect input to the unit.

Haven't ridden it yet, but as far as I can tell, it is much, much more smooth and does not sound like a fat kid chasing an ice cream truck every time I twist the throttle quickly. I'll update after I ride it.

As far as the pros/cons of removing the butterflies, I already did it... and ((un)fortunately - we'll see which) I did it in the irreversible way, so I'll have to live with it unless I buy new TBs. I will probably get some dyno time and retune for the low end lag.

Thanks for the replies btw.
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post #5 of 5 Old 01-11-2014, 08:04 PM
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Quote:
Originally Posted by rxlucky7 View Post
Ugh. Figured it out right after posting this ... I think...

Main tps plug was extremely fouled. Cleaned, reconnected.

TPS needed to be calibrated on the PC - Did the "quick turn" throttle mod - was giving incorrect input to the unit.

Haven't ridden it yet, but as far as I can tell, it is much, much more smooth and does not sound like a fat kid chasing an ice cream truck every time I twist the throttle quickly. I'll update after I ride it.

As far as the pros/cons of removing the butterflies, I already did it... and ((un)fortunately - we'll see which) I did it in the irreversible way, so I'll have to live with it unless I buy new TBs. I will probably get some dyno time and retune for the low end lag.

Thanks for the replies btw.

Glad you got it sorted out!

As far as tuning just need to give it more gas when you hit the throttle! Maybe richen it up through the low- midrange a tad!

Some bikes do not even have secondary throttle plates just straight throttlebodies like my 06 FZ6 used to have now it has R6 throttleodies with vacunm secondary slides!

I would not worry about the loss of low end enjoy the more responsive midrange that you will probably have now or atleast once you tune it!
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