1970 road runner Fuel Gauge issues

Lucky LAr

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Can’t get fuel gauge to read full when the tank is full of gas

I have to sending units, one brand new the other looks original, when I hook them up out of the tank the sending units & the gauge in the car work perfect

But when I put them back in the tank they will only go to a little under ¾ when the tank is full

Has anybody had the same issue, and is there a fix

Thanks larry
 

Roadcuda

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This is a common problem and there are many threads here on the subject. Just put "fuel gauge" in the search and you'll get several results on the subject.
 

stevo

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not sure of this is gonna help but make sure you have LOTS of grounds on the car/motor/dash/gas tank.
old mopars love lots of good grounds.
 
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