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2002 Dodge Ram 1500 Question: How to clean maf sensor, trouble codes p0051 when cold, p0052 when warm, p0071

 

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bad911, 4.7L V8, Ione, CA, March 29, 2012, 13:25
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Replaced both bank 1 & 2 heater o2 sensors with TDK brand, goes from low voltage when cold and to high voltage when warmed up and lean condition code, replaced a very greasy k&n filter and cleaned air flow tube up to throttle body opened flapper and cleaned out some greasy film from inside throttle body, could mass airflow be problem with these codes and if so how should I clean it or replace. Thanks for any help with this

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