185 fuel gauge

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   185 fuel gauge will only read empty. I put in a new sender same thing. Looked at wiring diagram and it is wired right. The purple wire to the sender has 12 volts with key on stud/wire goin to sender ( white with black stripe) has no power to it. 
Made a ground wire from sender body to ground still reads empty. Still reads empty tank is between 3/4 and full. 
Bad gauge? Any ideas?
Thanks 

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185turbo Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 15 Aug 2018 Location: Kansas Points: 104	Post Options Post Reply Quote 185turbo Report Post Thanks(0) Quote Reply Topic: 185 fuel gauge Posted: 21 Oct 2021 at 10:32pm
	185 fuel gauge will only read empty. I put in a new sender same thing. Looked at wiring diagram and it is wired right. The purple wire to the sender has 12 volts with key on stud/wire goin to sender ( white with black stripe) has no power to it. Made a ground wire from sender body to ground still reads empty. Still reads empty tank is between 3/4 and full. Bad gauge? Any ideas? Thanks
	185 turbocharged w/ 500 loader , WD

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Jim.ME Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 19 Nov 2016 Location: Maine Points: 951	Post Options Post Reply Quote Jim.ME Report Post Thanks(0) Quote Reply Posted: 22 Oct 2021 at 6:35am
	Ground the terminal of the gauge the sender wire hooks to and see if the gauge changes. If it doesn't the gauge is bad. If it does, ground the wire coming from the gauge at the sender and see if the gauge moves when powered up. If the gauge moves, with that wire grounded, it is a sending unit problem. If it doesn't move then wire is likely broken, or a bad connection, between the gauge and sender. You likely checked this, but are you sure the sender is the correct ohm range to match the gauge? Edited by Jim.ME - 22 Oct 2021 at 7:44am

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 20479	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 22 Oct 2021 at 6:38am
	With the key on, connect a jumper wire onto the sender stud. The gauge should read full or past full. When you ground the jumper wire, it should go to "E". If not, a bad gauge. If so, a bad sender. Sometimes the sender needs a ground wire on one of the mounting screws to insure a complete circuit.