fuel gauge problems

[codykolbe]

so the sho i bought tonight seems to have a fuel gauge issue, it always reads full. is this just a sending unit problem or have i lost a ground?

 

[FOMOCOTOSHO]

so the sho i bought tonight seems to have a fuel gauge issue, it always reads full. is this just a sending unit problem or have i lost a ground?

I had a similar issue after I tried to add new SHO Source gauge face plates and had to remove the needles. After I reassembled everything both my fuel & temperature gauges maxed up to the top. I traced it down to fuse #18 under the dash. When I tried to replace it, the fuse kept blowing immediately. I have yet to figure it out completely but to give you the short answer... YES i would check your fuses & grounds. Check the fuses, then pull the dash & cluster and keep checking for any loose or exposed wiring on all the connectors as you pull them, & check for any pinched wires.

 

[codykolbe]

also i noticed this morning the coolant gauge wouldnt register , all the way at the bottom . i noticed on the wiring schematic that the two gauges share the same ground., ill check the fuse tonight ,. thanks for the help

 

[codykolbe]

does anyone happen to have a fuel pump unit laying around? i need to get someone to check how many wires are running from the sending unit to the connector(top of the pump unit) i believe their is supposed to be two

 

[amnidab]

I had a problem with my tach and fuel gauge not working. Tach would stay at 0 and the fuel gauge was stuck at about 3/4 full. I check the fuse originally and it was good. I pulled the dash and check both of them for corrosion. I did not see any thing wrong. I put it all back together and still nothing. my next step was to drop the tank and check the sending unit, but I decided to check the fuse again and it was blown. I put a new one in and wah la!!! Both gauges work. I think next time I will double check fuses and recheck before going to the next step!!