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, (02 sensor voltage)
Perform injector service (cleaning), Fuel Injector Cleaning Procedure
Check fuel pressure (check vacuum line and return hose), Testing and Inspection

Throttle body deposits Check throttle body minimum air floe rate, Testing and Inspection
Clean throttle body, Throttle Body Cleaning