[richtazz]

The two emissions codes could be related, but aren't related to the MAF code. I would recommend only spraying the MAF, not using the q-tips. The MAF uses a coiled filament (similar to a light bulb filament) to guage airflow into the engine. The air flow cools the filiment, and changes it's resistance. The PCM monitors input and output signals to determine the proper injector on-time to keep air/fuel mixtures proper. If any little pieces of q-tip get on the filaments, the MAF is ruined. A far as the two emission codes, check the wiring harness at the vent solenoid (mounted on the front of the engine near the upper plenum, between it and the front valve cover) as the P1665 usually indicates a bad signal to the PCM from the vent solenoid. The P0440 could be a loose gas cap or could have been caused by what ever caused the P1665. If they don't come back after dealing with the MAF sensor, then I wouldn't worry about it.