John Deere 650j travel problems

Has anyone lost high speed in their transmission, machine still moves but will not go into anything higher than 2.0 and also it's trying to creep to one side or the other when moving any ideas

650j uses hyd. pumps, (2) hyd.drive motors one for each side and proportional valves and servos..
along with several speed sensors..the problem needs to be addressed with the service advisor software....

You dont need software to diagnose it you can use the machine, its actually easier. Does yours have a tcu with a display in the same location as this https://www.heavyequipmentforums.com/showthread.php?22064-Deere-650H-Codes under the left armrest? If it does pull all codes and post them. If it has the tcu but with no display it can be viewed on the monitor. Again post any codes.

Without seeing codes it sounds like two problems. Possible PCP failure/ null ajustment for the mistrack. It not going past 2nd speed it sounds like the motor shift solenoid problem.

As I say though. Check for codes.

The software will limit the machine to 2.0 when there are certain fault codes. If a fault is active, the yellow book with a wrench light will turn on the display.

On the monitor, click Menu, then Codes - what are the active and stored codes? If you give me the numbers I can tell you what the code means. Like Andrew said, could be a shorted shift solenoid or speed sensor if it's pulling to one side. Could also just need to be calibrated.

I have this same problem . But no codes are showing . I can shut dozer off and it will go up past 2.0 for a while . I can adjust spend from 2.0 down but won't adjust above that . Has anybody found out what cause this problem ?

Welcome to HEF Plumdumb!

Machine serial number?

Did you enter the menu on the monitor and look for codes? If not, please do so and post what you have, if any.