John Deere 3120 ehydro stuck in forward-won't start

[jldhome]

When I try to start my John Deere 3120 tractor it lunges forward like it is gear. If I put the transmission range gear in neutral it will start but then gears grind if I try to put the transmission in gear. The ehydro pedals seem to be stuck in forward;
Any ideas?

 

[DennisFolsom]

Check the pedal mechanism and linkage. Clean and lubricate. Perhaps try a penetrating lubricant. See if you can get the linkage to center again.

I am more familiar with the pre-electronic hydro systems, like my 4600HST has. Maybe there's something going on in the electronics, but your description makes it sound to me more like a mechanical issue.

 

[arlen4720]

I would start by putting the ICU into the diagnostic mode, and view the forward / reverse pedal positions using the display.

 

[DennisFolsom]

When I try to start my John Deere 3120 tractor it lunges forward like it is gear. If I put the transmission range gear in neutral it will start but then gears grind if I try to put the transmission in gear. The ehydro pedals seem to be stuck in forward;
Any ideas?

jldhome -
Did you get your problem solved? Those of us who answer someone's question like to hear some feedback about what the problem turned out to be.
After my earlier post, I wondered if it might be a stick caught in the linkage.

Happy tractoring, and welcome to TBN!