1990 Chev Corsica Hesitating - Engine

Question: When driving trying to accelerate engine has no get up. put accelerator pedal to floor no good ease off pedal all the way push lightly gradualy picks up speed please help thanks.

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Technican: Hello, What is the engine size?

Owner: 2.2 4-cyl

Technican: Okay, start out by checking for troublecodes. If there's no trouble codes check fuel pressure. When was the last time the fuel filter was changed? What about spark plugs and wires?

Owner: fuel filter wires and spark plugs have been replaced also map sensor and egr valve has been replaced

Technican: Were these parts replaced in an attempt to fix the problem it's having now? Did you check for any troublecodes? This is an important step in diagnosis, especially if the check engine light is on. Need instructions? It's imperative to perform adequate diagnosis to insure parts have failed before replacement. It saves money.

Owner: Checked Codes getting all 12's

Technican: Take your VIN (vehicle identification number) to your local dealer and have them run a check for computer(PROM) updates. Just explain your drivability problem and see if any of the computer updates apply.

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