Quote:
Originally Posted by Dead Parrot
Gas gauge reading at 3 o'clock is almost always a bad connection somewhere between the gauge and the ground stud off the sender on the tank.
Open circuit - 3 o'clock reading.
Wire shorted to ground - empty reading.
41 year old wiring has lots of places for corrosion to do its thing. If dual tank, switch is also a prime suspect.
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I've seen this behavior on three of these trucks.
The sender ground is damaged or missing. The tank strap is making intermittent contact with the tank making the gauge work intermittently.
Clamp a jumper cable from the tank pinch weld to a clean spot on the frame and watch the gauge work normally.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
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