1998 Buick Century 1998 Buick Century 3.1L hesitates badly

1998 BUICK CENTURY
100,000 MILES • 6 CYL • FWD • AUTOMATIC
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CZAJAJA
  • MEMBER
  • 1 POST
1998 Buick Century 3.1L hesitates badly on acceleration. this issue has just starting occurring and I don't have a good idea what could be wrong. I tried cleaning my egr valve which was recommended to me but that is not helping. The car hesitates on slow and fast acceleration when it reaches 10 mph, 20 mph, 25 mph etc.
Mar 26, 2010 at 11:32 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Inspect and test all the following listed below and get back with some testing results we start here

Oxygen sensors.
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.

Note:If it doesn't apply disregard.
Mar 26, 2010 at 11:34 AM
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