2001 Saturn L200 CODE po171

2001 SATURN L200
128,000 MILES • 4 CYL • FWD • AUTOMATIC
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KNKAISER
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i am having a problem with my saturn l200.i got the code po171.i have already replaced the oxygen censor,and the fuel filter,but i am having the same problem.it drives fine when i am in town but when i go up a steep hill it dies on me
Aug 16, 2008 at 9:49 AM
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RASMATAZ
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P0171

A lean fuel condition can be caused by:

* Low fuel pressure due to a weak pump or leaky fuel pressure regulator. (use a fuel pressure gauge to check fuel pressure at idle)

* Dirty fuel injectors. (try cleaning the injectors)

* Vacuum leaks at the intake manifold, vacuum hose connections or throttle body. (Use a vacuum gauge to check for low intake vacuum)

* Leaky EGR valve. (Check operation of EGR valve)

* Leaky PCV Valve or hose. (Check valve and hose connections)

* Dirty or defective Mass Airflow Sensor (MAF). (Try cleaning the MAF sensor wires or filament with aerosol electronics cleaner. Do NOT use anything else to clean the sensor, and do not touch the sensor wires
Aug 17, 2008 at 7:21 AM