System Too Lean P0171
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System Too Lean P0171
2000 Ford Explorer, after 20 years of letting others fix my cars, I deceided to start fixing my own car and teach my 14 year old in the process. I took my truck to the required Illinois Emisson Test and failed, reasons indicated are: P0171 and P0174, System too Lean, OBD malfunction indicator light lit. Is there a quick fix to this? Can I turn a screw to adjust the leanneess???? I went ahead and changed the Air Filter, Fuel Filter and gave it an oil change while I was at it. But the "CHECK ENGINE" light still on. Any help / suggestions will be appreciated....
Thanks, Alex.
Thanks, Alex.
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Joined: Dec 2003
Posts: 97,637
Likes: 2,012
From: Saskatoon, Saskatchewan
Hi Alex, welcome to FTE.
For ideas on you Expy post in the Explorer, Sport Trac, Mountaineer & Aviator forum: Explorer, Sport Trac, Mountaineer & Aviator - Ford Truck Enthusiasts Forums
As well drop into your local IL chapter today: Illinois Chapter - Ford Truck Enthusiasts Forums and be sure to fill in the location field in your profile.
For ideas on you Expy post in the Explorer, Sport Trac, Mountaineer & Aviator forum: Explorer, Sport Trac, Mountaineer & Aviator - Ford Truck Enthusiasts Forums
As well drop into your local IL chapter today: Illinois Chapter - Ford Truck Enthusiasts Forums and be sure to fill in the location field in your profile.
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