Dude, this post is awesome thanks for the info. I did a general write up on these codes if it will help anyone:
P0171 and P0174 OBDII Code Diagnosis
I still have not tracked down the cause in my Expedition but i'll report back when I do...
Get yourself a nice (and more importantly inexpensive) code reader so you don't have to borrow it from your friend. Seriously it'll pay for itself in a jiffy
Here's a good one for cheap...
Autel MaxiScan MS300 OBDII Scan Tool
Just wanted to weigh in on a code reader solution I got that seems to work great on my Expedition (i've also used it to read and clear codes on a 2004 Tundra and on my wife's 2006 BMW X3). It's a Bluetooth OBDII connector that you pair up to and Android powered smart phone. Here is a little...
Just in case this helps anyone ... i've been using the Torque Pro Android App too and did a write up on how to use it with a Bluetooth adapter. It's not in depth regarding diagnosing specific codes but more geared toward getting set up and reading codes:
ELM327 Bluetooth OBDII Reader and...
Just wanted to weigh in on a code reader solution I got that seems to work great on my Expedition (i've also used it to read and clear codes on a 2004 Tundra and on my wife's 2006 BMW X3). It's a Bluetooth OBDII connector that you pair up to and Android powered smart phone. Here is a little...
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