1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Codes p1331

Old 05-15-2019, 01:16 AM
Keith Fought
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Codes p1331

My dad got a crate motor put in with 90,000 miles on it and drove it for 3 months and the head was bad so he did a head job with all new gasket. After that he started it up threw a code for p1359, po171 and I delet the codes and then next day it there a code for 02 sensor bank 1 sensor 1 and so my dad change that and now we’re having problem with p1131 code. We need this truck to pass smog by the end of the month and my dad about to throw the truck into the ford dealer ship to see what going on... of anyone been throw this and know what might be that would be awesome I can save my dad a lot of money.... thanks
Old 05-15-2019, 09:34 PM
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they are going to need way more info than you've given, truck year, motor, trans, because your p1331 is OBD ll for trunk not closed on ford fiesta or glow plug malfunction in a F-350, and the p171 and p1131 is O2 sensor bank 1 lean condition, check your vacuum lines again, since you put motor n might have broke or missed one, just W.A.G since no real info given

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