John Deere 4400 thermistor location

GodfreyDaniels · Sep 5, 2014

Been reading up on what appears to be a common issue for the JD4400: fuel shut-off solenoid and thermistor. Think I've isolated the problem to the thermistor. Threads I've read say it is located behind the fuse panel behind the K3 relay. Not so on mine. Where else might it be?

joecdeere · Sep 5, 2014

Should be wrapped up in the harness right behind the fuse panel, there should be a white wire and a black wire going to it from the fuel solenoid relay.
In case you didn't know what it looks like, it's not much, but sure can cause headaches!

GodfreyDaniels · Sep 6, 2014

Thanks Joe! You were right. Ain't no bigger than your fingernail. Clipped the wire tie behind the K3 relay and unclustered the wires and it plopped right out. Extended the leads so I don't have to pull the fuse panel again to replace it. Fired right up.