Help with 2000 Ford Focus

2000 FORD FOCUS
45,000 MILES • 4 CYL • FWD • AUTOMATIC
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CRAZYED2009
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  • 2 POSTS
I have a 2000 ford focus. The check engine light keeps coming on. The code reads P071 (System Too Lean). I have replaced both O2 sensors, cleaned the MAF sensor and replaced the fuel filter. my wife complained that there was loss of power and poor gas mileage. Once I replaced the fuel filter she says the power is back but have not had enough time to assess the gas mileage. What should I do next to get this fault to go away?
May 23, 2011 at 9:44 PM
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CJ MEDEVAC
  • ✓Experienced Mechanic
  • 11,000 POSTS
Did you clear the code after your repair(s)?

Maybe it's already gone, you just don't know it.

The Medic
May 24, 2011 at 8:57 AM
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CRAZYED2009
  • MEMBER
  • 2 POSTS
Yes. I have cleared the code several times and it keeps coming back
May 24, 2011 at 10:01 AM
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CJ MEDEVAC
  • ✓Experienced Mechanic
  • 11,000 POSTS
Vacuum leaks can also make the engine burn leaner.

The Medic
May 24, 2011 at 10:33 AM
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