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| Engineering/Technical Ask technical questions about cars. Do you know how a car engine works? |
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09-06-2007, 01:12 PM
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#1 | |
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AF Newbie
Join Date: Sep 2007
Location: Houston, Texas
Posts: 1
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2003 Ford F-150 CHECK ENGINE
My 2003 Ford F-150 had a code check that registered P0171. AZONE said, it could be 1 of 3 things...1-Mass Air Flow Sensor, 2-Oxygen Sensor, or 3-Ignition misfire. I don't want to do all 3 things. Does anyone have any sugesstion?
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09-06-2007, 03:20 PM
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#2 | |
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A990 racer
 Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,953
Thanks: 25
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Re: 2003 Ford F-150 CHECK ENGINE
Yes, have a full scan done to look at sensor inputs, a vacuum leak can cause this also. Ign misfire would set a different code, do not let AZ try to diagnose your truck, out of their league.
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