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2000 Mercury Sable Repair Question


Topics covered: Check engine light, Engine, Noise.
Mileage: 1 miles.

Asked on June 13, 2011

Check engine light

I have a 2000 Mercury sable . The check engine light was on . The code read system bank #1 and # 2 lean. Codes po 171 and po174. I put new plugs and wires and clened the mass flow sensor and reset the light. I drove about 501 miles and the light came back on What can this be? I can't afford to take it somewhere and have a diagnostics. It is very frustrating. Please help
Avatar Asked by livermanr

Answer

Replied on June 13, 2011

We see these codes a lot and most of the time on a Ford, it's due to a bad vacuum leak. Listen for hissing noise and try to follow it to it's source.

Tiny Answered by Wrenchtech (expert)
14,734 answers provided