Might be a valve hanging up
need to check your evap system or you have a blown head
When the TPS sensor is disconnected from the car in idle, there would be delayed acceleration.
Your truck engine sputters probably because your truck's idle is too low.
Check for a vacuum leak.
The car will idle rough and hesitate during acceleration.
Needs a tune up
check for vacum leak
If a car sputters when it accelerates there may be a problem with the ignition. Another option is that the timing belt is malfunctioning.
Time to get a new car!
idle set too low, adjust the fuel to air mixture on a carb vehicle.if fuel injected, your injectors may need cleaned.Kadius1964~blog me.
Your idle air control valve should not affect your acceleration. As soon as you step on the gas , the idle part of your engine should not be operating. If your car cuts out or stumbles, i would suspect a problem with the TPS ( throttle position sensor.)