1990 Oldsmobile Ciera

Tiny
K2KEMPER
  • MEMBER
  • 1990 OLDSMOBILE CIERA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 15,900 MILES
At about 45 to 50 miles per hour the car has a jerky motion to it. What could be causing it?
Thursday, April 8th, 2010 AT 12:22 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by 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, April 8th, 2010 AT 5:35 PM

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