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Wayne, Journeyman
Category: Agriculture and Farm Equipment
Satisfied Customers: 9036
Experience:  34 + years as a mechanic
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2002 9750STS Combine. Will not shut off with key? Only way

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2002 9750STS Combine. Will not shut off with key? Only way to shut her down is to un-plug main harness in engine compartment.
Hi I'm Wayne
I will help you with this
If your power cuts out with key off,
Replace the fuel solenoid ,
when you are unplugging the main harness this is killing the ECM
that is why it shuts down
Customer: replied 3 years ago.
Dear Wayne, we had to order solenoid at a cost of $300.00. Once new solenoid replaced as You suggested we still have same problem. Machine will not shut down when key is turned off in cab. Everything else in cab comes on and off with key.
Customer: replied 3 years ago.
Dear Wayne,
We had to order solenoid. At a cost of $300.00. After installing new solenoid as You suggested we still have same problem. Key will start engine but it will not shut down with key! Every thing else in cab turns on and off with with key. Except engine will not shut down when key is shut off. Engine has been rebuilt and reinstalled only to find this problem. This is our only combine and it's imperative that we have this fixed soon! We cannot afford any more $300.00 mistakes. Wayne please help.
John Cyblowski
Cyblowski Farms
Holly, MI

That Bad service goes against me personally, not the site
Please use reply button.................

Are you having 12+ volts at solenoid when key is off
Customer: replied 3 years ago.


We do not have 12V at the solenoid when key is off. When key is off, it registers 0.


Ok I did some checking ,
If you have zero volts at fuel solenoid
that says the ECM, the fuel relay
that only possible thing is the inj pump it self,
turn key off, engine still running,
tap on it with a rubber mallet, or a 2x4, see if it shuts down
let me know
Customer: replied 3 years ago.

Thank you, XXXXX XXXXX unfortunately this did not work. Due to the urgency of this repair,we have called a John Deere technician that will be out this morning. Harvest is right around the corner.

We appreciate your attempt to diagnose and advise, but it is necessary for us to have this resolved ASAP.

We apologize for the poor rating above. That was our hired hand that issued it and undeserved.


Morning John

Yes that will go against me,
But I tried, it is are to diagnose things when your not there
Good Luck, God Bless on your field work

Wayne and other Agriculture and Farm Equipment Specialists are ready to help you
thank you