JD 4450 fuel guage

td466

Member
hello,
when the engine is turned off and the key is on the fuel guage works and shows the correct amount of fuel in the tank. when you start the engine the guage moves to empty. I've checked my ground at the sender. I also replaced the sender and there's no difference.
If I unhook the wire off the sender the guage goes to full. If I ground the wire to the frame of the tractor it goes to empty.

I ran a jumper wire from sender to wire harness connector at fire wall, now guage goes past full with engine running.

thanks in advance
 
I would grab several long heavy-duty test lead and make temporary ground connections from the battery ground cable to the fuel sender, the case of the alternator, and the ground connections at the instrument panel. (Might take a little research to find out what to ground there, and note which temporary ground connection fixes the problem.)
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top