Why does this happen!

[black4x4]

im new and have a hotboddie nitro buggy and use it sometimes but now i get it running but for some reason when it turns on it goes out of control and im holding the breaks but still goes its not the receiver or the remote, when its off i can control it perfect all those switch's are on neutral. so i dont know what to do

[itsalifeworthliving]

so i understand. your saying when the motor is off, everything is in nuetral position and works fine, but when you hit the motor, it goes likea wipped stray cat?. is it your throttle or is it both the throttle and stearing? clamp it down on a stand and see what it does.. are the servos jittery, like bouncing back and forth? if its just one servo,like the throttle then try replacing it.. it could be picking up interfearance from the nitro motor. ive had that problem with a couple of old traxxas servo's. if its not gliching and just staying in one place, and over reving when you start it, check to see if the carb barrel is fully closed..also what kind of radio gear do you have? am? fm? 2.4ghz?

[CharliesTheMan]

It kinda sounds like one of the servo switches is reversed on the transmitter.

[flm_savage]

me thinks your idle is way too high.

[CharliesTheMan]

duh, it hink ou hit the nail on the head with that one, flm. Guess I didn't see the forest for the trees.

[black4x4]

when i put it to reversed the throttle go's out but when its on N it go's in what do i put it on

so should i turn the idle screw in or out

[Plaidfish]

......