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Mike S.
Mike S., ASE Certified Technician
Category: Pontiac
Satisfied Customers: 6825
Experience:  ASE certified
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My 2003 Pontiac Bonneville SSEI has been giving a PO171 code, burning lean, that we cannot

Customer Question

my 2003 Pontiac Bonneville SSEI has been giving a PO171 code, burning lean, that we cannot track down. I have replaced map sensor 3 times, the o2 sensor, they did a smoke engine test, checked vacuum lines, we cannot find it. Anyone have any ides?
Submitted: 1 year ago.
Category: Pontiac
Expert:  Mike S. replied 1 year ago.
This could be caused by clogged fuel injectors so I would give them a cleaning.

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