2003 Audi Cabriolet Slow accelleration until 1800-2000 RPM

2003 AUDI CABRIOLET
88,000 MILES • 4 CYL • 2WD • AUTOMATIC
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RICHARD.E.MERRILL
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I have Slow accelleration until 1800-2000 RPM then a miss until over 2000. everytime this occurs. I had the injectors cleaned, using 93 octane, had coil check out and apears to be ok. I am running fuel cleaner through the gas tank with no improvment.
Jul 22, 2010 at 12:57 PM
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RASMATAZ
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Hi richard.e.merrill, Welcome to 2carpros and TY for the donation

Lack of acceleration,chugging,hesitating,bogging etc. could be caused by one of the following below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock 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.

Note:If it doesn't apply disregard it.
Jul 22, 2010 at 6:40 PM