Fuel Pump? Everytime you step on the gas, the car "stutters". We replaced the mass air flow sensor, so it's not that. The car seems like it's not getting any fuel, can't get it to go faster than 25 mph, and even then it's a painfully slow & jerky acceleration.

change your h2o sensor. it adjust the gas flow.

Remove the mass air flow,and clean it with intake cleaner spray,or mass air flow cleaner spray,if this does not help,reset the system again,by removing the negative battery cable for at least 20 seconds,then put it back on,if this does not help,replace the mass air flow sensor

The mass air flow sensor is one of the sensors used by the engine to determine th air to fuel ratio. so if you smell fuel and your engine is running rough this could be the problem.

if the vehicle has a mass air flow sensor it may be dirty remove and clean the mass air flow sensor with carb cleaner and it should take care of this.

The tps or throttle position sensor could be getting flaky, but without a code I don't know if this is the case.

The map sensor if equipped could be giving false manifold readings.

The mass air flow sensor could be bad if so equipped.

I'd be guessing without more data.

replace the fuel filter,if this does not help,replace the fuel pump.

Have the throttle position sensor checked, might be faulty.

had same problem replace mass air flow sensor

Check fuel lines for debris and if that does not fix it flush the fuel tank and pump

Try unplugging your Mass Air Flow Sensor (MAFS) - you'll find it on top of the metal body immediately after the air filter. I went through an 18 month ordeal - replaced fuel filter, fuel pump, dropped fuel tank and cleaned it, ran 55 gallons of fuel injector cleaner through the system - nothing! After reading some blogs on this car/engine, gave the MAFS unplug trick a try. The car instantly corrected itself (when you unplug this sensor, the engine control module reverts to factory default, allows sufficient fuel into the engine for unitterupted performance.) However, if this corrects your problem, it's only a temporary fix. Run it about 3 days - it you notice soot in the tailpipe, the factory default is running too rich. Replace the MAFS.