Hi all,

Been dealing with an issue and have been reading the forums trying to figure out as much as I can. Still having a persistent problem though. Here's my issue:

My check engine light is on - has been more or less since I bought the car in December 2010. I recently got two codes read: P0171 and P0106. The person at the auto store said that the P0106 was related to P0171. After doing research on here on P0171 - I've read that the issue could be caused by a dirty or bad mass air flow sensor, problems with old air filters, or even bad gas. I guess P0171 is apparently that my engine is running lean. I don't really notice any problem with the actual engine itself - I just need to light to go off so I can pass inspection.

A few days ago I did the following:

1.) Replaced the two air filters with new K&N filters.
2.) Removed the mass airflow sensor and cleaned it with CRC mass air flow sensor cleaner. I didn't have a screw to unscrew the part of the MAF where the connection plate is - so I just sprayed the cleaner through the "gate" and around into every part I could.
3. Disconnected the battery to reset the codes.

After driving a couple trips the check engine light is back on. I wanted to ask here what my next steps should be. I've always used premium gas in the car - so I think we can rule out the problem with the gas. I don't want to start spending hundreds of dollars to put in new parts (like a new MAF) if it's not going to take care of the problem. Any ideas? Was there a more thorough way to clean the MAF? Is replacing the fuel filter an option? Please help.

Car: 2004 Chrysler Crossfire coupe