motor revving by itself,help - Kawasaki ZX-10R.net
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post #1 of 45 Old 08-06-2008, 06:46 PM Thread Starter
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motor revving by itself,help

my 06 is doing something really wierd and i cant figure it out. the motor will rev up without me twisting the throttle. it doesnt happen all the time but it does happen both sitting on the sidestand at idle as well as while being ridden. i first noticed it several weeks ago , when banging a downshift and setting up for a curve, i was expecting some engine breaking, but there was none, it felt like i was still in the throttle. it wasnt until this happened a couple times that i realized that the motor was reving by itself. cables are adjusted properly and are not sticking at all. when this mysterious revving happens i can force the throttle tube hard in the forward direction and the revs will momentarily come back down, but when i take pressure off they go back up. it almost seems like the computer is telling the motor to do this as if it was the first start of the day(almost like choke). what can i check? what does this sound like? throttle pos sensor? any input would be greatly appreciated, missed trackday last weekend cause i couldnt figure this out.
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post #2 of 45 Old 08-07-2008, 12:10 AM
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my 06 is doing something really wierd and i cant figure it out. the motor will rev up without me twisting the throttle. it doesnt happen all the time but it does happen both sitting on the sidestand at idle as well as while being ridden. i first noticed it several weeks ago , when banging a downshift and setting up for a curve, i was expecting some engine breaking, but there was none, it felt like i was still in the throttle. it wasnt until this happened a couple times that i realized that the motor was reving by itself. cables are adjusted properly and are not sticking at all. when this mysterious revving happens i can force the throttle tube hard in the forward direction and the revs will momentarily come back down, but when i take pressure off they go back up. it almost seems like the computer is telling the motor to do this as if it was the first start of the day(almost like choke). what can i check? what does this sound like? throttle pos sensor? any input would be greatly appreciated, missed trackday last weekend cause i couldnt figure this out.
Check your throttle cables on the left of your steering stem. I have an '06 as well and unfortunately there's big 'ol crimp in them because of a pretty serious angle they have to get under the fairing and if they're not routed correctly they'll pinch your cables. It happened to me...so I know. Check them out, make sure they're not pinching or not routed correctly. Mess with them and turn your bars from left to right and pull your throttle to make sure it doesn't bind up. Once I fixed mine it's neved given me problems since.

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post #3 of 45 Old 08-07-2008, 12:27 AM
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You might want to call a priest.
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post #4 of 45 Old 08-07-2008, 07:33 AM
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Maybe she's just teasing you?

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post #5 of 45 Old 08-07-2008, 08:01 AM
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Is temperature sensor showing right #s?
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post #6 of 45 Old 08-07-2008, 04:37 PM Thread Starter
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Is temperature sensor showing right #s?
yes it seems to be showing the right temp. i thought about that too, as if the computer thought the engine was cold and "choke" .dont know
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post #7 of 45 Old 08-07-2008, 04:39 PM Thread Starter
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Check your throttle cables on the left of your steering stem. I have an '06 as well and unfortunately there's big 'ol crimp in them because of a pretty serious angle they have to get under the fairing and if they're not routed correctly they'll pinch your cables. It happened to me...so I know. Check them out, make sure they're not pinching or not routed correctly. Mess with them and turn your bars from left to right and pull your throttle to make sure it doesn't bind up. Once I fixed mine it's neved given me problems since.
been thru the cables several times, they are routed right , adjusted right, and lubricated. the cables are def not binding.
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post #8 of 45 Old 08-07-2008, 04:40 PM
 
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You idle might be off check it.. If you dont know how take it to the dealer
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post #9 of 45 Old 08-07-2008, 05:13 PM Thread Starter
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You idle might be off check it.. If you dont know how take it to the dealer
done that too, set at about 1150 rpm, this is an intermittent problem that has gotten more frequent. when it is not happening the idle is dead nuts. im wondering if some sensor is going bad, getting progressively worse. just dont know which one it could be.
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post #10 of 45 Old 08-07-2008, 05:38 PM
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Seems that you definitely have a problem in the throttle bodies. You might have an air entrance below the lower butterflies causing the engine to rev up. You have to have a close look at everything around, looking for something loose or a cut air hose or something.
If the secondaries servo motor would be bad you´ll probably get an FI code. This one executes the fast idle via a linkage to the lower (main) butterflies shaft during cold operation.
I insist to take a look at the temperature at the very moment that the problem occurs. The temp sensor might have an intermitent failure.
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