1) Yes.
2) No.
Fuel injected:
Most likely is the hesitation has another cause such as a bad TPS, MAF or MAP that has lead over time to oxygen sensor damage. With a bad oxygen sensor, your ECU has lost it's fuel learn parameters and made the hesitation problem worse.
Carbureted:
More likely is a minor leak inside the carburetor causing the hesitation and this may have also caused damage to the oxygen sensor. Rebuild the carburetor and replace the oxygen sensor at the same time.
yes and no... the purpose of the O2 sensor is to monitor the exhaust gasses to ensure that the exhaust is within tolerance of federal regulations (to make sure you're not polluting). On later model vehicles, the O2 sensor plays a part in controlling your fuel/air ratio, depending on what the O2 sensor sees, it can make the engine run rich, giving you more power in some cases, but trying to flood the engine when you floor the pedal. Which sounds like the problem in your case.
if your 02 sensors are bad your check engine light would be on.
Yes. That is what they are made to do
Check the TPS
Plankton making less oxygen is one result of a sudden unexpected change in the environment.
Check for a burntout fusible link in the wiring. have ignition module check if good replace crank sensor
the cs in at the front of the engine behind the power sterring pump, unclip the wire then undo the small bolt be carefull they break easy. then pull the sensor out there held in by a rubber seal so all of a sudden they will come out. then replace and reconnect
due to lack of oxygen
profound shock (as seen with acute myocardial infarction)
Yes?
To safely depress the gas pedal to accelerate your vehicle, apply gradual and steady pressure with your foot. Avoid sudden or jerky movements to maintain control of the vehicle. Be mindful of your surroundings and adjust your speed accordingly.
Cerebral hypoxia
Sounds like vents are in open position where it passes through based on speed with or without fan on
If the vehicle all the sudden just dies (stalls out) or sputters -R Diesel