I've got a 2000 E150 auto with a 4.2 V6. Rough idle and stalls. Code reader comes up with codes P0174 and P0176 fuel lean. Could this be a fuel filter or a fuel pump problem or should I be looking at something else. Also the OD on the tranny will turn itself off going down the road I don't know if this is related.

 

P0176 Fuel Composition Sensor Circuit Malfunction
read the link for your P0174 code at the link below
you can check your OBD codes here: http://www.obd-codes.com/index.php

 

Problem found vacume leak and what looks like the original air filter, hey it's a company truck and not even assigned to me.