1992 olds 98 3.8 supercharged

1992 OLDSMOBILE 98
6 CYL • FWD • AUTOMATIC
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TONWIL1373
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  • 2 POSTS
car runs fine for about 10 miles then when going uphill or trying to speed up it loses power and cuts out bad sometimes even dies. i have replaced fuel pump,fuel filter,fuel pressure regulator,cam sensor,crank sensor,plugs and wires. problem still exist any ideas what it could be?
Aug 24, 2011 at 1:27 AM
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RASMATAZ
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  • 75,992 POSTS
Check the exhaust for restriction -catalytic converter could be clogged, could be cuase by the following below

Oxygen sensor.
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.
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 and keep testing.
Aug 24, 2011 at 1:31 AM
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TONWIL1373
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  • 2 POSTS
disconnected exhaust problem still existed was just told could be ignition control mod. can it be tested?
Aug 24, 2011 at 1:53 AM
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