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2005 Ford Freestar Cargo Questions & Answers
2004 freestar code p0402?
P0402 is an OBD-II generic code that the engine control module (ECM) has detected indicating the engine exhaust gas recirculation (EGR) valve is flowing too much recirculated exhaust gases when it is commanded to open the flow of gases into the intake manifold.
Where is the knock sensor
The knock sensor is installed in the lower forward area of the block on an OHC V6 engine. I believe another option to the knock sensor is the "Mass Air Flow Sensor" That would be easy to see from the top side of engine on the Air Inlet tube on the Throttle Body.
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