Having problems with steering servo or throttle issues? Maybe start with checking for loose wires/connections.
Do you have a known good spare servo, and/or ESC? That would be too easy. I get it...that's not always possible.
If your throttle channel is working fine and something is a bit wrong with your steering, or your steering is fine and your throttle is acting weird; I'd first make sure dual/steering rate knob/setting is at 100%. Then I'd disconnect any steering linkage from the servo and test with no load on the servo, then you can move on to swapping the plugs on the receiver. This is done to check for possible receiver issue.
- With power off...Place the channel 1 steering servo plug into the receiver's channel 2 port
- Place the channel 2 ESC's plug into the receiver's channel 1 port.
- Make sure Steering Trim is centered, and Steering Rate/Dual Rate at 100%
- Have your RC on stand and/or tires not touching any surface.
- Turn power on as normal.
This will allow you to use your transmitter's trigger to control the steering on your RC, and your transmitter's wheel to control the throttle. I say to make sure the steering trim is centered 'cause any left or right trim signals are now being sent to the ESC as forward and reverse signals.
Note: Any steering EPA settings you have will now effect the throttle channel... as you have swapped channels. The same goes for the throttle EPA settings.
I do this ESC/steering sevo plug swapping to diagnose radio/servo/ESC issues. When done, don't forget to swap the plugs back into the ESC the way they were...steering servo plugs into the receiver on channel 1, and the ESC plugs into the receiver on channel 2. Easy way to remember... "1 to turn, and 2 to burn!"