It shouldn't, but if your injectors were dirty, then the O2 sensors probably are too.
No they are not but should be done in conjunction with eacd other. Fuel injection cleaning is what it says to be. Induction cleaning is cleaning the throttle butterfly and the the intake, back of the valve and combustion chamber.
All of the engine sensors can affect fuel mileage.
Fuel injection service generally means running a cleaning solution through your fuel system. It removes the carbon buildup and makes the injectors spray more effectively.
The Lucas brand of products are very good.
Tires do not have oxygen sensors. They can have pressure sensors. The lack of pressure sensors would have no affect on fuel economy.
A fuel level sensor will not affect performance. Fuel level can due to weight of fuel and accumulated heat in the returned fuel from the engine.
The fuel additive container should say "O2 sensor safe".
it may just need a cleaning; usually about $75
NO. There is alot more to a 98 350 then just fuel injection. That year truck MUST have ALL the electronic engine sensors on it and working are the transmission will not even work. The 76 350 has NO place for the engine sensors to go. So it won't work.
GM. did not start using TPS / THROTTLE POSITION SENSORS until they switch to the fuel injection fuel system. Your truck has a carburetor, TPS was not used on that type of fuel system.
No difference if they are both the same style of fuel injection. The manifolds will interchange at the heads, but the fuel injection units will not readily interchange, and there may be different mounting configurations for sensors, etc.
Carburetor, mechanical fuel injection, throttle body electronic fuel injection, ported electronic fuel injection,