Durb wrote:
Unplug your trailer cord from the truck (no brakes) and see if it persists. If yes, then disconnect your battery which will disarm your breakaway switch which I suspect is your culprit. Test your rig in a safe zone.
It sounds like there is an electrical malfunction that is applying your brakes during acceleration; a tough problem to locate. As you accelerate, a circuit closes and the brakes are applied which causes deceleration which causes the circuit to open and allows you to accelerate again repeating the process, thus the jerking.
I had a motorcycle once (BSA Victor) that would die under acceleration, then start up again under deceleration. Quite humorous actually, jerking and wheelies. Turned out the battery was sliding back and forth in the battery box and was shorting against the frame.
As stated in a previous post I have tested towing with and without the trailer wiring connected. It does the tugging even without the 7 pin connected. This was done on a low traffic side street and safe.
I have not tried disconnecting the trailer battery to reset anything, however the battery did die last month since my wife left some lights on and I didn't have it plugged up to shore power. It was dead without power for about two weeks before I towed it on our most recent trip. The battery was good and charged by the time we got to disney from Savannah, Ga. Not sure if a dead battery for two weeks would reset anything any different that simply disconnecting the battery does. I would assume it would have the same effect
Edited to add*** Sorry, I read that wrong... I understand what you're saying now and that makes sense. I will try that the next time I tow it. thanks
