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Post by tcrush on Jul 28, 2005 15:05:26 GMT -5
MY 77 HAS DUEL TANKS.THE GAUGE READS PAST THE FULL LINE.THE SELECTOR SWITH DOES NOT SEEM TO WORK.I DON'T KNOW IF THE SELECTOR VALVE IS BAD OR WHAT? CAN A BAD GROUND BE THE PROBLEM?WHEN I MOVE THE SWITCH THE GAS GAUGE DOES NOT MOVE.ANY HELP WOULD BE GREATFUL.I DON'T WANT TO RUN OUT OF GAS.
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Post by 19_Chevelle_69 on Jul 28, 2005 20:28:21 GMT -5
Way past full is always an open connection. It reads infinite resistance.
First step is ALWAYS to check the grounds, and the rest of the connections. Bad grounds account for 80% of all electrical problems.
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Post by tcrush on Jul 29, 2005 10:02:15 GMT -5
I WILL TRY TO FIND A BAD GROUND.WHERE DO I LOOK.IS THERE A GROUND AT THE VALVE FOR THE TWO TANKS,OR MAYBE A GROUND AT THE SWITCH,OR GAUGE?IM LOST.I HAVENT EVEN LOOKED YET.
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Post by 19_Chevelle_69 on Jul 31, 2005 17:51:11 GMT -5
It has been so many years since I fixed one that I can't be sure on any specifics any more. One of the guys here is sure to have been through it more recently, they will probably be more help...
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Post by BowtieGuy on Aug 16, 2005 11:38:54 GMT -5
The ground should be at the tanks. There is a single powered wire that runs from the switch to the valve the splits iff into two, one for each tank to the sending unit. If I remember correctly it was pink in color. Then the sending unit is grounded to the from close by.
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Post by tcrush on Aug 17, 2005 15:31:31 GMT -5
HEY FELLAS.THANKS FOR THE HELP.I GOT UNDERNEATH THE TRUCK AND MADE SURE MY GROUNDS ARE GOOD.I EVEN HOOKED NEW WIRES TO THE GROUNDS THAT GO TO THE SENDING UNITS.NO LUCK.I CHECKED THE SELECTOR SWITCH AND IT SEEMS TO BE GETTING POWER.I TOOK THE DASH APART AND MESSED WITH THE FUEL GAUGE AND STILL NOTHING.I THINK IT IS A PINK WIRE THATS THE HOT.I GUESS I NEED TO MAKE SURE THAT IM GETTING POWER TO THE SENDING UNITS.I CHECKED AND THEIR IS POWER GETTING TO THE FUEL GAUGE.WHATS NEXT.COULD MY SELECTOR VALVE BE CAUSING A BAD CIRCUIT?NEITHER TANK WILL REGISTER ON THE FUEL GAUGE.IM LOST
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Post by Pontiac1976 on Aug 17, 2005 20:52:33 GMT -5
Did you check the wires to the dash switch to the valve your running one fuel gauge right. The valve might have a ground to the frame ,a short wire where it mount to the frame.
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Post by tcrush on Aug 18, 2005 10:41:27 GMT -5
I DO HAVE THE ONE GAUGE.I WILL CHECK TO SEE IF THEIR IS A GROUND FOR THE VALVE.THANKS FOR THE HELP.
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