About a million and one different things can make that happen.
Clean the carbeurator and lube the throttle cable.
will the transmission causes my 1999 ford expedition to bog down & sputter when accelerating the 4.6liter engine.
Try locating and testing or changing the TPS (Throttle Position Sensor) Or if it's not in gear it could be the rev limiter keepin you from over revving & blowing your engine.
The throttle position sensor is on the throttle body. That's the part of the engine that controls the amount of air allowed into the engine. To find the throttle body, follow the air intake routing toward the engine. The throttle body is the part that sits on the intake manifold. To find the throttle position sensor, follow the throttle cable to the throttle body. If it helps, have someone press down and release the throttle pedal while you're looking for the throttle body/position sensor. The throttle cable causes a shaft to turn, that's the part that controls the air coming into the engine. The throttle position sensor is connected to that shaft.
My 1997 Neon had the same problem. I took a small nut and used silicone to attach it under the throttle. Basically giving the engine more gas. The problems stems from bad valve springs.......I have loved my neon and plan to put in a new engine in a year! Second opinion: Take it to an Auto Parts store and ask them to check and clear the codes for you, this is a free service. Most likely it is the mass air flow sensor or TPS throttle position sensor. The codes will narrow it down.
It is located on the top of the engine, below the throttle. Get a light and look straight down between the two throttle cables "if it has cruise control". It is bolted down with one 12mm bolt.
The governor spring adjustments
The thing that looks like a carburetor on the top of your engine, Is called a Throttle body, If you look down in it you will see 2 injectors, 1 on each side of it.
If the engine is revving up, then the transmission is having problems. If the engine is not revving, then check the linkage from the accelerator to the throttle body.
I had the same problem and it is your oxygen sensor.
A broken or maladjusted IAC valve.
"Part Load" is short for partial load. "Load" is when the engine is doing work. Whatever work the engine is doing places a "load" on the engine which resists the engine's turning motion and slows the engine down so it requires more throttle to maintain speed. "Partial load" is when the engine is doing work that would stall the engine at idle, but does not require full throttle, just partial throttle. A good example would be a car traveling at highway speed or up a slight grade.