fuel gauge not reading gas at all

[BigFlo]

On our legacy Mopars (55-75) if one has a fuel guage, water temp and oil pressure guages they have a voltage limiter. The voltage limiter takes the 12VDC and outputs 5VDC. Note all of the mentioned guages are actually a 5VDC guage, and each respective, sensor is a variable resistor adjusting the guage indication...

You were saying gauge and I was thinking dummy light. I think Jerry set us straight!

 

[Michael Maresca]

The trick to that answer is a 67 GTX didn't have a gauge from the factory, so oil pressure is not related.

I wish I knew how to send pics. My so. Did anything I had posted in the past. But I do have what appears to be a factory idiot light that says oil pressure above it next to the Alternator gauge. It is on the right side next to the Alt. Gauge.

 

[Jerry Hall]

I wish I knew how to send pics. My so. Did anything I had posted in the past. But I do have what appears to be a factory idiot light that says oil pressure above it next to the Alternator gauge. It is on the right side next to the Alt. Gauge.

Yes it's a light and the oil sending unit is a switch. Turn on the ignition and the light comes on. Start the engine and the oil pressure turns off the switch. So 12V and ground are all that's involved in that circuit, not any voltage limiter. Your temperature and fuel gauges are resistor type circuits that are regulated by a resistance value against the 5V on the gauges to determine a needle position of the gauges. Hope this helps, because I know no way to take a picture of how they work.

 

[Sinitro]

The trick to that answer is a 67 GTX didn't have a gauge from the factory, so oil pressure is not related.

This needs clarification...
Besides the 67 GTX..
During the 1960/70s...
A significant shift occurred across the American auto industry, including Chrysler...
Most base models came equipped only with an oil pressure warning light (often called an "idiot light") instead of a full gauge. Full instrumentation, including an oil pressure gauge, was typically an optional upgrade or standard on higher-end trims and performance models.

Just my $0.02...

 

[Jerry Hall]

This needs clarification...
Besides the 67 GTX..
During the 1960/70s...
A significant shift occurred across the American auto industry, including Chrysler...
Most base models came equipped only with an oil pressure warning light (often called an "idiot light") instead of a full gauge. Full instrumentation, including an oil pressure gauge, was typically an optional upgrade or standard on higher-end trims and performance models.

Just my $0.02...

The OP is wanting to get information about a 67 GTX, no clarification needed, my .02 cents. See my post #23 for futher education, it all pertains to 66-67 B bodies. One can't lump 55-74 cars together and get a definitive answer.

 

[Sinitro]

The OP is wanting to get information about a 67 GTX, no clarification needed, my .02 cents. See my post #23 for futher education, it all pertains to 66-67 B bodies. One can't lump 55-74 cars together and get a definitive answer.

Once again more clarification is needed...
Not all 66/67 B Bodies had a Oil Pressure Light...
Note my 66 Belvedere II Hemi did have a light.
However, the 66/67 Chargers had an oil pressure guage not a light.

Just my $0.02...

 

[dadsbee]

Too early for Winternet fellas...