1999 Buick Park Avenue Repair Question
Topics covered: Fuel pressure, Pcv valve, Sensor.
Mileage: 20,000 miles.
Mileage: 20,000 miles.
Asked on October 20, 2012
Buick Park Avenue Fuel pressure Problem
How do i fix PO171 (System too Lean)?
Asked by (pending member)Answer
Replied on October 20, 2012
bank 1 lean.
could be a vacuum leak, low fuel pressure, pcv valve or bad mass air flow or map sensor.
Roy
