1992 Buick Century car has jerky motion when accelerating

Tiny
PNORTH
  • MEMBER
  • 1992 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 85,400 MILES
If I start up a hill and step on the gas, the car jerks, and almost stalls. This only happens when in drive; shift to 2 and everything is OK. This seems to rule out any problem with fuel; (I installed a new fuel filter); or any problem with ignition; spark plugs; pcv components; air flow; etc.
Thursday, March 4th, 2010 AT 2:01 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hesitation, lack of acceleration, chugging, bogging etc.
Could be one of the following below.

Inspect and test all the following listed below and get back with some results.

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.

Note:If it doesn't apply disregard.
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Thursday, March 4th, 2010 AT 5:39 PM

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