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| | | | Joined: Dec 2010 Posts: 9 New Guy | | New Guy Joined: Dec 2010 Posts: 9 | I have had this problem for a while. I can't get my fuel gauge to read. It reads just over 1/4 all the time. I put in a new gauge, a new sending unit and new wiring. I grounded the sending unit at the tank. I don't know where to go from here? | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Sounds like your sending unit is the wrong ohm range for your gauge. | | | | | Joined: Dec 2010 Posts: 9 New Guy | | New Guy Joined: Dec 2010 Posts: 9 | I just ordered it. could it be for a 12 volt? | | | | | Joined: Dec 2010 Posts: 9 New Guy | | New Guy Joined: Dec 2010 Posts: 9 | My fuel gauge read FULL all the time so I put in a new sending unit and now it reads 1/4. I don't know what to check next. | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | You should tell us what you are working on, whether the gauges are stock type or aftermarket and what tank and sending unit you are using. Oh, yeah, what voltage you are working with. | | | | | Joined: Dec 2010 Posts: 9 New Guy | | New Guy Joined: Dec 2010 Posts: 9 | I have a 1950 chevy truck..6 volt. The gauges and sending units are all new from Carters. These are all stock type. | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Removing the wire from the sending unit and grounding it should peg the gauge on empty. If it doesn't, check the wire for continuity. If the wire is good the gauge may be bad.
If the gauge proves good, remove the sender and check the resistance through it's travel. It should vary from 0 to 30 ohms.
Last edited by cletis; 02/11/2011 6:34 PM. Reason: had it backward
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Looks like I had it backward. I'll edit it. | | | | | Joined: Dec 2010 Posts: 291 Shop Shark | | Shop Shark Joined: Dec 2010 Posts: 291 | May sound crazy. But I put a new sending unit on mine and it did not work ether. I took it out and what happined was the float had a hole and filled up as fast as I installed it. So I just put on a new one. Have you tryed hooking it up out of the tank and moving it up and down. | | | | | Joined: Dec 2010 Posts: 9 New Guy | | New Guy Joined: Dec 2010 Posts: 9 | I have two gauges and two sending units. Can't seem to get anything working. Will have to start all over again .Thanks for your help. | | | | | Joined: Apr 2008 Posts: 899 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 899 | Check to be sure you're getting 6V from the ignition switch. If out of the truck hook the gauge (ign side) to +6V bat terminal with sending unit attached to other gauge terminal. Ground sending unit body to - bat terminal. Moving sender arm up/down should move gauge. That will determine if the units are working and give you a starting point.
Ed
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