help!

[sn95gt19]

i would say the mass air, but it really could be a lot of things, the mass air has a heated element in it that is cooled be the air passing by it, it sends a voltage reading to the computer to tell how much air is entering the engine. the first thing that i would replace would be the "INTAKE AIR TEMPERATURE SENSOR" (i think thats what its called) on your car its on the front of the lower intake manifold(cant remember if its on the driver or passenger side) this senses the temerature of the air entering the engine, so the car doesnt run different in different weather, cause if it was hot out, like in your situation, it would make the computer think that there was less air entering the motor, creating a lean condition, so i would replace that, its only like 5$, thats most likely your prob. GOOD LUCK