gas gauge wont work

[bobbyribby]

i have a  69 charger  with a  new sending unit  and a  new  gas  gauge all new  wiring as  well, bought it all  from classic IND,so the  wiring was  with the  rear light  Assembly , i get no reading on  my  gas gauge  i tried puling  the  wire off the sending unit and  grounding it out to the  body  and  the gauge didn't move  at all, stays all the way past empty.

[jaak]

Either there is a break in continuity from the blue wire running from the cluster connector to the where it connects to the rear body harness, or a bad circuit board on cluster. If those 2 check out ok, I would think its a faulty gauge, even though its new. First thing I would check is continuity...pull the connector from cluster, then unplug the rear body harness (near kickpanel) and check continuity on the blue wire.

Jason

[Patronus]

Just making sure you have a grounding strap?

[rt green]

got any gas in it?

[rt green]

sorry, couldn't resist

[johnnyseville]

Guy at Performance Graphics once told me most of the sending units around are not good, he suggested a company in Canada that makes them, don't recall who, but you may want to call them to find out if you still have not solved the problem.

[bobbyribby]

yes theirs a lot of  gas in it lol  and  there is a ground  strap to

[jaak]

yes theirs a lot of  gas in it lol  and  there is a ground  strap to

If the gauge doesn't move when grounding the sender wire, you've either got... 1. a break in the blue wire somewhere. 2. May have a problem with the printed circuit board on cluster, or 3. A gauge that doesn't work. Just some things to check.

Jason

[bobbyribby]

ok thanks i will look in the morning

[jaak]

ok thanks i will look in the morning

Keep us posted....we'll help you figure it out 

Jason

[Dino]

Hook up a AA battery to the gauge and see if it moves, if it does you can rule out a bad gauge.  If you hook up two batteries in series, the needle should show roughly half a tank.

Did you replace the voltage limiter with a solid state version?  If not, make it a priority.