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2001 Buick Century Acceleration

Tiny
RENELORIO
  • MEMBER
  • 2001 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
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.
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Tuesday, August 3rd, 2010 AT 8:12 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Tuesday, August 3rd, 2010 AT 9:26 AM

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