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System Too Lean

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Old Jan 18, 2007 | 06:13 PM
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System Too Lean
I have a 1997 E-150 Van with the 4.6L V-8. The "Service Engine Soon" light came on. I extracted the code P0171 which translates to "System Too Lean (Bank 1)". How do I go about fixing the problem? Any help would be greatly appreciated.
 
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Old Jan 19, 2007 | 02:54 PM
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Ok, it's more than likely a dirty MAF sensor, a bad O2 sensor, or it's in need of a tune up.
 
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Old Jan 20, 2007 | 09:24 AM
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pfogle-Thanks for the info. I'll check it out and post the results. Again, Thank You!
 
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Old Jan 20, 2007 | 11:04 AM
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Oh, (I'm such a bad person....)... Welcome to FTE. We're the largest and best ford truck message board on the web.
 
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P0171 (System too lean bank 1), P0174 (System too lean bank 2)
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