Check my throttle linkage

How does the throttle on the carburetor feel if you disconnect the cable and return spring and move it by hand? If its nice and smooth and easy then the cable its self may be buggered.

I have seen where people have installed new carpet or rubber floor mats and they are not trimmed around the pedal well and have the pedal to hang up. My dad did that on his Coronet and it drive the way you describe.

I have had throttle bodies get slammed shut and bind and they too would act off-on but they would ease off ok, it was the on that they we're hung up.