2001 Buick Century Acceleration

2001 BUICK CENTURY
125,000 MILES • 6 CYL • 2WD • AUTOMATIC
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RENELORIO
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  • 1 POST
The car struggles to accelerate from low speeds. Acceleration from 50 to 70 seems normal. From 10 to 40 the vehicle struggles. "Flooring the gas petal" helps slightly. Going up an incline is a real challange.
Someone riding with me, not aware of the problem, notice engine nosie and commented that they thought I might have an exhaust problem at the exhaust system manifold to the engine.
Aug 3, 2010 at 8:12 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Lack of acceleration,chugging,hesitating,bogging,misfiring 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.
Aug 3, 2010 at 9:26 AM
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