2001 Chevy s10 2.2 L is reading code P0171. its running too lean. Ive replace O2 sensors plugs and wires and its still running crappy. What could it be?
Year : 2001Make : ChevroletModel : s-10Engine : 2.2 L
Replaced O2 sensors, plugs and wires
you need to check the fuel pressure..the fuel pump may be weak..these must have no less then.41psi at all times..please print
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Important: Make sure the fuel system is not operating in the Fuel Cut-Off Mode. This can cause false indications by the scan tool.
Action Taken When the DTC Sets
Conditions for Clearing the MIL/DTC
Test Description Number(s) below refer to the step number(s) on the Diagnostic Table.
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