Problem occurring no codes. When lightly accelerating sputters more pressure on gas sputter goes away. Get to speed of about 40 to 50 mph light on the gas sputter happens push harder on the gas goes away, also when in cruse control runs fine.
Ok here we go I have changed out all of the following with re-learns involved. 183,000 miles fyi.
MAF (Delphi), MAP (Delphi), entire throttle body(Delphi), all ac delco parts: coil packs, spark wires, spark plugs, trans fluid and filter full service, evap solenoid, fuel pump relay, new gas cap.
Alternator is pushing 14.5v, grounds are great, old spark plugs all same and perfectly worn, cold start is normal, no vacuum leaks(smoke tested), fuel is premium, idle is at 500 to 600rpm.
Give me a hint I am at the point of just changing out the fuel pump i am stuck.
Thanks