So my 2008 M1000 backup sled is having powervalve issues. They are not opening. I have replaced the servo motor (twice), new ecu, new harness from ecu to servo motor, added extra ground from frame to ecu I am at a complete loss. I don't even know where to go next. It starts retarding timing around 6000-6200rpm and the servo-motor(s) just do not rotate. Any ideas? I am about to start parting it out, but it is a ripper and runs awesome up until 6K. I hate to do that.... I cannot find wiring diagrams anywhere on the internet. I even thought about getting the BDX powervalve delete for $199, but I don't know that the little chip that comes in the kit to fool the ecu would work properly since it's not telling the motor to spin. Hate wasting that money.
