Keeps Blowing fuse

[CarlV]

4025 4wd. 8 hours and now have popped the 5 amp fuse... I think it is the fuel pump one. Anything simple to check before I call the dealer?

 

[davesl708]

Inspect the wires from the fuse block to the fuel pump. May have a grounded wire. If you don't see anything then let the dealer track it down on warranty.

 

[j wilson]

check the connecting plug for water or corrosion

 

[CarlV]

Problem went away last year....put 28 hours on tractor ...Blew 5 fuses just getting it back to the garage last night.

 

[davesl708]

You have a grounded wire someplace. A multi-meter can help track it down. Disconnect suspect wires at both ends. Then ohm one end of the wire to ground. A test light will do the same.

 

[dickfoster]

What they said.
You likely have a wire chafing to the frame somewhere along the wire path. Disconnect at each end. Connect your meter or better yet a beeper (continuity tester on most DMMs) then wiggle and shake the wire along its path to simulate vibration to the other end. Look for pinch points. If you find nothing, only then do you suspect the pump.

 

[Soundguy]

You can pull the fuse and put a test lamp in line, visual evidence

 

[CarlV]

Update, seems maybe 2 problems. First the Oil sensor sender wire was severed, Would this wire grounding cause the FIP fuse to pop? Second the connector plug was loose on the fuel injector pump (probable cause)? Putting some time on it today to see if this remedies it.

 

[Navasot]

Just crimp the connector so it fits a bit more snug and youll be good

 

[Soundguy]

Most 1 wire senders are just a single switch to ground from a lamp that is powered when key on.

Thus, key on, lamp on, switch closed, after startup, lamp off because switch opens. Chaffed ops wire in that circuit would just make op lamp come on.

Loose plugs make for poor connections, lotsa possible problems. Correct plug fit and retest.