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1998 Chevrolet 1500 Pickup Question: What is the cause of error P0131/p0151 when @ full throttle?

 

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Santee, 5.7L V8, Manning, SC, November 25, 2012, 09:37
 Rookie

Only happens when it is at full throttle and that is when the light comes on and error codes display.. also I can feel the motor bog down. I can make it do this at will. I recently did changed the fuel filter and via other research I saw some things in regard to fuel pressure? Does that mean the fuel pump is going to go out soon?

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