I got my check engine light on just today I took it to Auto Zone to check what it is and it came up with P0171 error they are saying that it can be couple of things MAF Sensor, Oxygen Sensor, Fuel Injector and i dont feel like paying 150$ to take it to dealer or to shop to find out what it is. Has anyone ever experienced something like this and do they have any suggestions what to check I would really appreciate it. Also if you have any pics or know any websites that have some pics of how to replace and location of the things i would really really appreciate it thanks again. Nick

 

Any other symptoms?

I had the same issue and pulled that code on my reader. There was a loud hissing noise from the engine and vibrations. I discovered a vacuum leak caused by a brocken check valve. I replaced the valve and deleted the code (u need to purchase a code reader) so far so good the cel has not returned.

Good luck!!