1992 Volvo 940 92 Volvo 940GL shudders and won't do over 10

1992 VOLVO 940
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BDRICHARDS
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Engine Performance problem
1992 Volvo 940 4 cyl Two Wheel Drive Automatic

Hello,

My cousin has a 1992 Volvo 940GL 4 cyl automatic. The car, as she states, "Shudders and won't go over 5-10mph."

To me, this could be a range of things...

A) She has never cleaned/replaced the flame trap, maybe a cause?
B) Bad plugs/wires/dist. cap/rotor?
C) O2 sensors?
D) Fuel filter or injector bad?
E) Trans issues?
F) Internal engine issues?
G) Wheel Bearings?

Any opinions?
Jul 6, 2010 at 9:25 PM
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RASMATAZ
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Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft 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
Jul 6, 2010 at 10:09 PM