This post is a little late, but there is no flywheel sensor in a 2007, they deleted it after serial number 311033. The signal now comes from the alternator. However, I am chasing my own problem. My tractor runs fine and then acts like it pops out of gear. I can let up on the pedal and try again and it works fine. The problem is intermittent. I printed out my electrical and hydraulic schematics and now I have to find all the rest of the sensors and test them. On the early machines everyone pointed out the flywheel speed sensor as the likely culprit, so what is the likely problem for the later machines?