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1970 chevy nova gas gauge problen

Im working on my 1970 chevy nova gas gauge,my problem is that the gauge does not read correctly.when I ground the sending unit wire with key on the gauge will move from full to empty. we removed the tank and removed sending unit, on bench connected ohms gauge by moving float up we get 92 ohms in the down position iam getting 1.2 when I hook sending unit wires back on float down says empty but when I go to half way up with float the gauge reads less than a1/4 with float all the way up it read less than 1/2 on the gauge. we also ran an external wire from gauge to sending unit and got same readings. don't no what to try next all suggestions are much appreciated, thanks for your time dave

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Well friend, you know the dash gage is good cause that was a proper test procedure. Since your not getting proper readings it has to be the sending unit. Pull it apart and clean the rheostat with a pencil eracer and light pressure, the assemble it and try it again. if still nfg, replace the sending unit. they're cheap from any auto parts store.

Posted on Mar 30, 2017

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SOURCE: 2001 chevy blazer fuel gauge moves from empty to full and back to empty and sum times it read the right amount when i have a half a tank is the wire grounding out?

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