Easy tips

Where is the short in the fuel solenoid circuit?

Where is the short in the fuel solenoid circuit?

The wiring from the fuse panel to the solenoid is short and encased in plastic so it doesn’t seem likely that the short is in the wire run. I disconnected the power wire to the solenoid, replaced the fuse, and turned on the power. The fuse did not blow. I put the power back on the solenoid and it popped the fuse immediately.

What does the Cold Start switch on a JD 5103 do?

The cold start switch and associated circuit is supposed to advance fuel timing when it is cold. It is not a protective device for when the engine gets too hot; it just turns off the advance once the engine warms up. You can get manuals if you Google “john Deere 5103 manual” at a john deere site or others.

How much does a John Deere fuel gauge cost?

The gauge cost $100 to replace it is from a John Deere tractor. How it is wired, the gauge has a ground, sender and power. One wire runs from gauge to sender, one wire runs from gauge power to power source, ground of sender, gauge and power source are tied together.

How do you check the fuel gauge sender?

Looks like you have already checked the wiring, so onto the fun part. Remove the tank sender and lay it on a flat insulated board with the float in the empty position. Connect the gauge wire and connect an earth wire to the sender body. With the key on, check the gauge reading. Then move the arm to 1/4, 1/2, 3/4, and full.

The wiring from the fuse panel to the solenoid is short and encased in plastic so it doesn’t seem likely that the short is in the wire run. I disconnected the power wire to the solenoid, replaced the fuse, and turned on the power. The fuse did not blow. I put the power back on the solenoid and it popped the fuse immediately.

The cold start switch and associated circuit is supposed to advance fuel timing when it is cold. It is not a protective device for when the engine gets too hot; it just turns off the advance once the engine warms up. You can get manuals if you Google “john Deere 5103 manual” at a john deere site or others.

The gauge cost $100 to replace it is from a John Deere tractor. How it is wired, the gauge has a ground, sender and power. One wire runs from gauge to sender, one wire runs from gauge power to power source, ground of sender, gauge and power source are tied together.

Looks like you have already checked the wiring, so onto the fun part. Remove the tank sender and lay it on a flat insulated board with the float in the empty position. Connect the gauge wire and connect an earth wire to the sender body. With the key on, check the gauge reading. Then move the arm to 1/4, 1/2, 3/4, and full.

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Ruth Doyle