Hey
@Jonathon, we are a large Easy Motion dealer and here are a couple things you want to check out to correct the issue you are having:
- When you say surging I presume that the system doesn't shut down but rather that the bike moves forward on its own, is jerky or doesn't feel as responsive as it did when it was new? If yes, then there are a couple of things you should check out.
1 - Make sure your rear wheel is properly tightened but not overly tight. If you check and it's very tight and you have taken the rear wheel out since you got it, then loosen it slightly (still making sure it's tight though). Overtightening the rear wheel can cause stresses on the torque sensor.
2 - Ensure the torque sensor is clean. The inspection over on the 2017 models are located in the inside area of the derailleur hanger / sensor plate (black or silver aluminum color piece) If you notice the area has a lot of dirt / oil then it's time for a cleaning. Only use a "Safe For Plastics" electronics contact cleaner to clean this area.
- If you are experiencing an issue with the system shutting down on you, there are two areas to check.
1- Make sure that the contacts between the display and the base are clean. Once again you can use a "Safe For Plastics" electronics contact cleaner to clean this area or rubbing alcohol for this.
2- The 2 larger tabs where the battery connects to the frame may not be making proper contact. Inspect these 2 larger tabs for any evidence or arching. If there is this means that there is an issue with not having a proper electrical connection. To correct this, you will need to bend the tabs outwards slightly 1/16" and you need to be gentle. Also, you MUST never use any metal object to bend the tabs. I like to use a plastic tire lever.
Your Easy Motion bike comes with a 5 year warranty so I always suggest that you have a dealer doe this work for you if there is one close by.
hope this helps,
Will
shop.scooteretti.com