1989 Toyota Celica 89 Celica 3S-FE engine

1989 TOYOTA CELICA
220,000 MILES • 4 CYL • FWD • AUTOMATIC
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OGRE1345
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Operates normally when cold but sputters on acceleration when the engine gets warmed up till 2500 rpm, then it accelerates/operates normally until rpm get below 2500. Idles fine when cold and idle gets very rough when warmed up. I think it may be a bad O2 or MAF sensor, can these sensors cause these symptoms?
Jun 1, 2010 at 2:17 PM
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RASMATAZ
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Hi Ogre1345, Welcome to 2carpros and TY for the donation.

The following components will contribute to severe hesitation/lack of acceleration

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.
Jun 3, 2010 at 2:13 AM