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Deere 450 won’t idle down

William Rushbrook ยท 2019-10-25 13:55

Machine starts up and ramps up to full throttle without touching control knob. Not running away. 6cyl Turbo diesel.

Replies5
  1. #1thepumpguysc2019-10-25 15:51

    Check to see if the throttle on the inj. pump is free.. & touching the low idle screw. IF yes.. remove the return line on the top cover & see if someone has knocked out the check ball in the return connector fitting..

  2. #2GODSDOZER2019-10-25 17:57

    Is the step motor froze in full throttle position ?

  3. #3mg23612019-10-26 06:00

    Deere 450LC? CLC? DLC? Serial number?

  4. #4William Rushbrook2019-10-26 18:48

    LC. 090333.

  5. #5mg23612019-10-27 05:39

    Check fuses F2, F3, F6, F8 and F9. If the fuses are good then remove cover from behind the seat and look at the controllers. I think the second one in the pile should have an LED light. Is it on constantly, off or blinking?