1986 Oldsmobile Cutlass Fuel gauge issues

1986 OLDSMOBILE CUTLASS
113,980 MILES • V8 • 2WD • AUTOMATIC
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CFASSANO
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My fuel Gauge reads 1/4 tank when full. It will go down to E as the fuel empties from the tank. I have already changed the sender in the tank (lots a fun) and this did nothing to correct the probelm. I noticed that when i unplug the lead coming from the sender the gauge goes to full. With the lead from the sender attached i pulled the ground off and it stayed at 1/4 when full. I checked the lead with a multi meter in between and seem to be reading 6 volts. Any ideas as i really do not want to run out of fuel again on I 95.
May 5, 2008 at 4:05 PM
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2CARPRO JACK
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To begin I need to know which Cutlass you have, there are 9 different ones. The I can look up the wiring diagram. Sounds like it may be a gauge problem though
May 8, 2008 at 7:44 AM
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CFASSANO
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Sorry it is a cutlass supreme brougham. I have tried a few things since posting. I currently have the dash apart and jumpered around all three connections to see if i had a short somewhere. I can make the guage read full or empty or i can make it read 1/4 (tank currently full). I even tried to jumper from the sending unit rite into the guage. It reads the same as when it is in the dash. The only thing i noticed is that it reads the same with and without the ground lead attached. Any way hope this helps. P.S. I have the rallye guage package so it is attached to the water temp guage.
May 8, 2008 at 12:55 PM
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CFASSANO
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Don't bother to donate. It got me one answer which you can see above. Very disapointed! Oh well, fool me once.....
May 19, 2008 at 1:39 PM