Walter: The most common cause of acceleration issues lies in the transmission. However, 2CarPros.com suggests:
Inspect and test all the following:
Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.
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I have 2001 Daewoo nubira it had terrible acceleration was the catalytic converter clogged up
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