Hesitates or Stalls on Acceleration

Definition: Momentary lack of response as the accelerator is pushed down. Can occur at any vehicle speed. Usually most severe when first trying to make the vehicle move, as from a stop sign. May cause the vehicle to stall if severe enough.
POSSIBLE CAUSE ACTION
Poor or contaminated fuel Check for excessive alcohol content
Recommend higher grade fuel

Fuel metering Check air/fuel ratio measure the 02 sensor signal voltage.
Perform injector service (cleaning). Fuel Injector Cleaning Procedure
Check fuel pressure (check return hose). Testing and Inspection

Throttle body deposits Clean throttle body. Throttle Body Cleaning