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Old 12-27-2012, 10:03 AM   #1
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Default Steering and Throttle Problem?

Short version:
My Traxxas Nitro 4-Tec 3.3 is having problem with the steering, it will turn fine to the right but when turning to the left it will hesitate before it turns fully, also it is giving a weird humming or buzzing sound. Once in a while it will also throttle itself, I was driving it when all of a sudden it will go full throttle for a few seconds, multiple times in a row. What should I do?

Elaboration:
I recently removed the lower chassis in which everything is screwed into. After putting it back together I noticed that there was a bit of a problem with the steering, it was turning fine to the right but when I turned it to the left it would only turn slightly. I proceeded to make the left and right by hand to possibly get it moving how it should. When turning it to the left now it will turn slightly, hesitate, and then turn all the way. It is also making a weird humming or buzzing sound. Also, it will go full throttle while driving for a few seconds multiple times in a row even if you're not even touching the remote. What should I do?
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Old 12-27-2012, 10:10 AM   #2
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unplug the servo that is humming from RX, Its probably bad. Or switch the throttle and steering servo on RX, and see if it still humming. 98% of the time steering servo needs to be replaced. Hopefully a HT/MG servo. Or you mixed the connection of RX.
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Old 12-27-2012, 11:37 AM   #3
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It stops humming when the steering servo is unplugged, but it continues humming when plugged into any channel. Does this mean the servo is bad, because it is a brand new car. Also do you have any ideas as to why the car throttles itself? Would that be the throttle servo? Thanks.
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Old 12-27-2012, 11:57 AM   #4
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if the servo is bad possibly shorted it could be back feeding into the receiver and then to the throttle servo
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Old 12-27-2012, 05:06 PM   #5
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Quote:
Originally Posted by azeroth View Post
if the servo is bad possibly shorted it could be back feeding into the receiver and then to the throttle servo
True. If you remove the steering servo from RX, Throttle should be normal. Steering sevo bad if humming.
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Old 12-27-2012, 05:14 PM   #6
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Quote:
Originally Posted by 3.3Rc View Post
Short version:
My Traxxas Nitro 4-Tec 3.3 is having problem with the steering, it will turn fine to the right but when turning to the left it will hesitate before it turns fully, also it is giving a weird humming or buzzing sound. Once in a while it will also throttle itself, I was driving it when all of a sudden it will go full throttle for a few seconds, multiple times in a row. What should I do?

Elaboration:
I recently removed the lower chassis in which everything is screwed into. After putting it back together I noticed that there was a bit of a problem with the steering, it was turning fine to the right but when I turned it to the left it would only turn slightly. I proceeded to make the left and right by hand to possibly get it moving how it should. When turning it to the left now it will turn slightly, hesitate, and then turn all the way. It is also making a weird humming or buzzing sound. Also, it will go full throttle while driving for a few seconds multiple times in a row even if you're not even touching the remote. What should I do?
It sounds like something is binding... Before you took it apart was this happening? I would suggest disconnecting your steering servo horn and test and see if there are any noises under no load.... You will know if your servo is ok... If there are no noises then its something to do with your steering links... Do the same for the throttle servo... If its glitching it could mean many things... make sure everything is connected and seated properly in the receiver..
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