Nissan Altima Repair Question
Mass air flow sensor or egr valve
Follow your instinct:
MAP misleading ECM or the EGR system
Here's more you can try. On fuel injected engines, stalling also can be caused by conditions that upset the air/fuel mixture. This includes vacuum leaks or unmetered air entering the intake manifold downstream of the airflow sensor, a faulty throttle position, MAP or oxygen sensor, dirty fuel injectors, or low fuel pressure to the injectors (weak fuel pump, faulty fuel pressure regulator or restricted fuel filter)., a defective coolant sensor may be telling the PCM the engine is colder (or warmer) than it really is. Any of these conditions can upset the fuel calibration of the engine and cause a problem.
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so what should i check for and where? i think my fuel filter is clear and i just installed a new fuel pump. my o2 sensor is also new as i just had it replaced so my car would pass smog.
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