I vote no. This isn't an engine problem. The motor runs and acts appropriately, as well as works correctly when the creeper is being used. The tach works and the motor is pretty clearly being pushed around by the trans and momentum from the tractor.
Does it do it in reverse? Oh never mind just reread your original post. :mur: It will be an electrical issue. A plugged strainer would affect the loader/backhoe operation too.
E hydro is fairly sophisticated. It needs inputs from rpm, load, and speed. I believe it is readable with a computerized tool to show where the breakdown might be. I'll bet one or more of those input sensors are out of range, causing a jerky output. A plugged suction strainer would only apply to the implement circuit, the tranny pump does not draw oil through there.
So still no resolution, but I called the dealer and they are sending out a guy next friday with the 2 sensors it could be. One was the transmission speed sensor and I forgot what the other one was. So we'll see come Friday. Possibly earlier if I can get my trailer back up and running.
Guy came this morning and in a grand total of about 16 seconds replaced the flywheel sensor.
Problem solved. The explanation I got was that these tractors have the Loadmatch built in and undefeatable. So when the flywheel sensor doesn't know what the motor is doing, activates the Loadmatch capability. In my case if the flywheel sensor says 2500 RPM and then 1/4 second later it says 800 RPM it kills the forward motion, 1/4 second later we're 2000 RPM and I am requesting full forward still, I get full forward. And an exciting ride.